tm223 HST Service Manual Update [PDF]

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S e r v i c e U p d a t e

TM223FH

FOREWORD 1. This manual has been edited as a service update for the TM223FH tractor. Consequently, please use this manual referring to the service manual available for the TM215F & TM217F. 2. The TM223FH, which features the HST, 4WD, and power-assisted steering system, is constructually different from the previous models in the following points: a. b. c. d.

The engine has bee modified. The main clutch has been eliminated. An independent PTO has newly been added, and The rear PTO has been changed to a single speed type.

Servicing procedures outlined in both manuals contain sufficient information to return all component parts of a tractor to new condition. In discussion of each component part, it is assumed that a complete overhaul is being performed, consequently, complete disassembly and reassembly are outlined. The mechanic is relied upon to decide how far disassembly must be carried out when complete overhaul is not required. Study unfamiliar service procedures thoroughly and understand them clearly before attempting disassembly. Specific data essential for proper overhaul, such as running clearances and torque values, have been provided in interline of inspection and reassembly procedures of each group section. This manual was compiled from latest information available at time of publication. However ISEKI reserves the right to make changes at any time without notice. Whenever the terms “left” and “right” are used, this means as viewed by the operator when seated in the operator’s seat. Whenever servicing the tractors, pay sufficient attention to operational safety to protect you and other persons around the machines from danger by following carefully the instructions given in both manuals. Never take chances!

1

ISEKI TRACTOR TM223 SERVICE UPDATE

CONTENTS FOREWORD ..................................................................................................................................................................... 1 CHAPTER 1. GENERAL INFORMATION ........................................................................................................................ 4 §1. TRACTOR TYPES AND PUNCHED IDENTIFICATION MARKS §2. SPECIFICATIONS .................................................................................................................................................. 5 Engine ............................................................................................................................................................. 5 Transmission ................................................................................................................................................... 5 Power take-off (PTO) ...................................................................................................................................... 5 Hydraulics ....................................................................................................................................................... 5 Electrical system ............................................................................................................................................. 6 Capacities ....................................................................................................................................................... 6 Track setting ................................................................................................................................................... 6 Maximum axle loading .................................................................................................................................... 6 Tyre size ......................................................................................................................................................... 6 CHAPTER 5. TRANBSMISSION ...................................................................................................................................... 7 1. POWER TRAIN DIAGRAM ............................................................................................................................. 7 2. POWER TRAIN DRAWING ............................................................................................................................ 8 3. DISASSEMBLY, INSPECTION, AND REASSEMBLY OF TRANSMISSION .................................................. 9 3.1. DISASSEMBLY ............................................................................................................................................... 9 3.2. INSPECTION ................................................................................................................................................ 10 3.3. PRECAUTIONS FOR REASSEMBLY .......................................................................................................... 10 3. DISASSEMBLY, INSPECTION, AND REASSEMBLY OF PTO CLUTCH AND RELATED PARTS .............. 11 3.1. CONSTRUCTION ......................................................................................................................................... 11 3.2. FUNCTION ................................................................................................................................................... 12 3.3. DISASSEMBLY ............................................................................................................................................. 12 3.3. INSPECTION ................................................................................................................................................ 12 2.3. REASSEMBLY .............................................................................................................................................. 13 CHAPTER 9. HYDRAULIC SYSTEM ............................................................................................................................. 15 §1. GENERAL DESCRIPTION ................................................................................................................................... 15 1. HYDRAULIC SYSTEM DIAGRAM ............................................................................................................... 15 2. HYDRAULIC SYSTEM PIPING .................................................................................................................... 16 §2. SPECIFICATIONS ................................................................................................................................................ 18 §3. HYDRAULIC VALVES (FLOW-DIVIDER AND PTO CLUTCH DRIVING VALVES) .............................................. 20 1. FLOW CONTROL VALVE ............................................................................................................................. 21 1.1. CONSTRUCTION AND COMPONENTS ...................................................................................................... 21 1.2. INSPECTION ................................................................................................................................................ 21 2. RELIEF VALVE ............................................................................................................................................. 21 2.1. GENERAL DESCRIPTION ........................................................................................................................... 21 2.2. INSPECTION AND ADJUSTMENT .............................................................................................................. 22 3. FLOW CONTROL VALVE ............................................................................................................................. 23 2

3.1. GENERAL DESCRIPTION ........................................................................................................................... 23 3.2. CONSTRUCTION ......................................................................................................................................... 23 3.3. INSPECTION ................................................................................................................................................ 23 4. REMOTE HYDRAULICS CONTROL VALVE (OPTION) .............................................................................. 24 §4. TROUBLESHOOTING .......................................................................................................................................... 25 1. SPECIFICATIONS & CAPACITIES............................................................................................................... 27 Engine Oil ..................................................................................................................................................... 27 Engine Coolant ............................................................................................................................................. 27 Fuel Tank ...................................................................................................................................................... 27 Transmission & Differential Housing (Including Hydraulic System) .............................................................. 27 Front Axle ...................................................................................................................................................... 27 Grease Fittings ............................................................................................................................................. 27 2. LUBRICATION/FILL POINTS ....................................................................................................................... 28 3. PERIODIC MAINTENANCE SCHEDULE ..................................................................................................... 29 ENGINE .......................................................................................................................................................................... 30 1. SERVICE STANDARDS ............................................................................................................................... 30 2. TIGHTENING TORQUE OF MAJOR FASTENERS ..................................................................................... 36 Tightening torque for standard bolts: ............................................................................................................ 36

3

ISEKI TRACTOR TM223 SERVICE UPDATE

CHAPTER 1. GENERAL INFORMATION §1. TRACTOR TYPES AND PUNCHED IDENTIFICATION MARKS Each tractor is identified by means of the tractor model and serial numbers. As a further identification, the engine and chassis are also provided with identification numbers. 1

KM/H

3

x1000

RPM

1

2

3

000 1 H

2

TO ENSURE PROMPT, EFFICIENT SERVICE WHEN ORDERING PARTS OR REQUESTING REPAIRS FROM AUTHORIZED ISEKI DEALER, RECORD THESE NUMBERS IN SPACES PROVIDED.

0

(1) Model name plate (2) Punched model name and serial number on the right-hand side of the front frame Fig. 1-1

(3) Cast engine model name and punched engine serial number on the right-hand side wall the cylinder block

1. MODEL NAME PLATE

2. CHASSIS PRODUCTION NUMBER T105 FE 000001

1 TM223 FH

2

MODEL TYPE

3

NO.

000001 B

Chassis production serial number 4WD and Export model

000E4

Manufacturer's model name

4

3. ENGINE MODEL AND SERIAL NUMBER ISEKI & CO., LTD. TOKYO/JAPAN (1)

(2)

Model TM223

1

FH

HST transmission with 4WD

Sub-model S M R E4

Power-assisted steering sytem with mid-PTO with ROPS for European and Oceanian markets

(3)

Production No.

(4)

Production date The year of 1996 is alloted to “A,” and the following years are expressed alphabetically except for “I.”

2 3

Fig. 1-2

Fig. 1-3 4

(1) Engine model (2) Piston displacement (in litres) (3) Serial Number

CHAPTER 1

§2. SPECIFICATIONS Models ........................................................................................................................................................................................................ TM 223 FH Sub-models ...................................................................................................................................................................................................... SME4

Engine Make .......................................................................................................................................................................................................... ISEKI Diesel Model .................................................................................................................................................................................................... E3112-B05 Type ........................................................................................................................................................................................... Indirect injection, overhead valve Displacement ........................................................................................................................................................................................... 1123 cc Number of cylinders ............................................................................................................................................................................................ 3 Bore ............................................................................................................................................................................................................... 78.2 mm Stroke .............................................................................................................................................................................................................. 78 mm Engine horsepower (gross)@ engine rpm .......................................................................................................................................... 16.5kW(22.5PS)/2800 Firing order .................................................................................................................................................................................................... 1 – 3 – 2 Compression ratio ............................................................................................................................................................................................ 22.5:1 Low idle speed ............................................................................................................................................................................................... 950 rpm High idle speed ............................................................................................................................................................................................. 3050 rpm Valve clearance (cold) – intake and exhaust ................................................................................................................................................. 0.25 mm Air cleaner ........................................................................................................................................................................................... Single – dry element Engine cooling .................................................................................................................................................................................. Liquid, forced circulation Cold starting ............................................................................................................................................................................................. Glow plugs (3)

Transmission Primary ........................................................................................................................................................................................................... Infinite Range ................................................................................................................................................................................................................... 2 Gear selections ................................................................................................................................................................................................ F2/R2 Brakes ........................................................................................................................................................................................ Mechanically acutuated dry shoes Speed range (km/h) with agricultural tyres Forward 1 ................................................................................ 0 to 9.3 2 ............................................................................... 0 to 21.6

with turf tyres

Reverse

1 ............................................................................... 0 to 6.98 2 ............................................................................... 0 to 16.2

Forward

1 ................................................................................ 0 to 9.4 2 ............................................................................... 0 to 21.8

Reverse

1 ............................................................................... 0 to 7.05 2 .............................................................................. 0 to 16.35

Power take-off (PTO) Control ...................................................................................................................................................................................................... Electric switch Clutch .............................................................................................................................................................................................. Wet, multi-disc, hydraulic Rear PTO shaft ...................................................................................................................................................................... 35 mm (1.375 in) diameter – six spline Output .................................................................................................................................................................................................... Clockwise rotation Speeds @ engine rpm ................................................................................................................................................................................. 540 @ 2680 Mid PTO (accessory) shaft .................................................................................................................................................... 25 mm (1 in) diameter – fifteen spline Output ............................................................................................................................................................................................. Clockwise rotation Speeds @ engine rpm ......................................................................................................................................................................... 2000 @ 2583

Hydraulics Main hydraulic system Pump .......................................................................................................................................................................................... Gear pump (Open centre) Output – maximum ............................................................................................................................................................................ 20.2 litres/min Pressure – relief valve setting .............................................................................................................................................................. 140 kgf/cm2 Rear linkage type .................................................................................................................................................................................... Three-point hitch Control ......................................................................................................................................................................... Operated by single ‘position’ control lever Lift capacity ............................................................................................................................................................................ 550 kg measured at link ends 5

ISEKI TRACTOR TM223 SERVICE UPDATE Models ........................................................................................................................................................................................................ TM 223 FH Sub-models ...................................................................................................................................................................................................... SME4 Auxiliary hydraulic system Pump .......................................................................................................................................................................................... Gear pump (Open centre) Output – maximum ........................................................................................................................................................................... 10.31 litres/min Steering system type ....................................................................................................................................................................... Hydro-static power-assited Pump ............................................................................................................................................................................................... Gear/ Flow divider Output – maximum ............................................................................................................................................................................. 8.3 litres/min Pressure – relief valve setting .............................................................................................................................................................. 105 kfg/cm2

Electrical system System voltage .............................................................................................................................................................................. 12 volt - negative (-) ground Battery ........................................................................................................................................................................................ 36 hA (5 hr): 435CCR, 55B24R Charging .............................................................................................................................................................................. 40 amp alternator with internal regulator

Capacities Engine crankcase with filter .......................................................................................................................................................................... 2.7 litres Transmission and differential housing (including hydraulics) (litres) ......................................................................................................... 14.0 litres Fuel tank ........................................................................................................................................................................................................ 23 litres Cooling system .............................................................................................................................................................................................. 7.1 litres Front axle - four-wheel drive ......................................................................................................................................................................... 2.7 litres

Track setting Front two-wheel drive Agricultural tyres (dished in only) ................................................................................................................................................................ 750 mm Turf tyres (dished in only) ............................................................................................................................................................................. 900 mm Rear two-wheel drive Agricultural tyres (dished in only) ........................................................................................................................................................... 800 – 920 mm Turf tyres (dished in only) ............................................................................................................................................................................. 900 mm

Maximum axle loading Front axle (4WD) ........................................................................................................................................................................................... 650 kg Rear axle ......................................................................................................................................................................................................... 750 kg Total limit: ............... 1200 kg

Tyre size Front Agricultural tyre .................................................................................................................................................................................. 5.00-12 4PR Turf tyre ............................................................................................................................................................................................... 23 × 10.5-12 Rear Agricultural tyre .................................................................................................................................................................................. 9.50-16 4PR Turf tyre ............................................................................................................................................................................................... 315/75D-15

6

E3100-B07 17.0 ps/2500 rpm 17.0 ps/2500 rpm 5.6 kgf·m/1800 rpm 1,006 cc

7

15T

6008

Fig. 5-1

RCA47

11T 6907 6005 12T

6911

11T

21T

6206

15T

GLNY3557111G

47T

6205

QLN5068914.5

17T

30T

6305

2083 rpm MID-PTO

SI253513

KC35528

KT202624

TC20357

6204

KT202624

18T

29T

24T

15T

34T

6204

30T

18T 14T

12T

11T

6205

RCA52

KT303824

6306

58T

19T

19T

Turf tyres Agri-tyres (15 ps) Agri-tyres (17 ps)

Turf tyres: 20.5×8.00-10-4PR (ø526 mm) Max. Load: 410 kgf Agri-tyres (17 ps): 5.00-12-4PR (ø581 mm) Max. Load: 255 kgf Agri-tyres (15 ps): 5-12-4PR (ø550 mm) Max. Load: 210 kgf

FRONT TYRES

Max. Load: 810 kgf Max. Load: 515 kgf Max. Load: 475 kgf

6204

6304NR

6305SH2

1st: 563 rpm REAR PTO 2nd:1042 rpm

S1253513

TC35558

Rim: 10×6.00I Rim: 300D-12 Rim: 300D-12

Rim: 15×10LB Rim: 18×W6 Rim: 16×5JA

1st: 7.6 km/h 2nd: 17.7 km/h (5.14%) 1st: 7.93 km/h 2nd: 18.85 km/h (5.35%) 1st: 8.43 km/h 2nd: 19.6 km/h (4.66%)

TRAVELLING SPEEDS (LEAD)

Turf tyres: 29×12.00-154PR (ø757 mm) Agri-tyres (17 ps): 8-18-4PR (ø840 mm) Agri-tyres (15 ps): 5-12-4PR (ø783 mm)

REAR TYRES

6009

42T

6010

6206

TC30458

6208

QLF488011.518

6305SH2 6305R 6N3RCS15 KT253224

7T

6304

35T

6204NR

14T 6204

25T

32T

19T

29T 19T

19T

6005

17T

KT253224

6304

16006

HST

SBPFL204

TC20357

24TK308B2U3

TC21529

6205SH2

QLN5068914.5 6005 6205

6305

8T

6010

Displacement: 21.5 cm3/rev. Relief setting pressure: 230±15 kgf/ cm2 at 10 litres/min. Cracking pressure: more than 195kgf/ cm2 at 1 litre/min.

HST

COVER ASSEMBLY Maximum release load: 170 kgf Static transmission torque: 12.9 kgf (P=330 kgf; µ=0.3; η=0.85)

DISC ASSEMBLY (ø184) Maximum torsion torque: 15 kgf·m±15%

CLUTCH

E393-B03 15.5 ps/2500 rpm 15.5 ps/2500 rpm 5.1 kgf·m/1600 rpm 928 cc

ENGINE

1. POWER TRAIN DIAGRAM

CHAPTER 5

CHAPTER 5. TRANBSMISSION

Fig. 5-2

6

1

2. POWER TRAIN DRAWING

5

17

11

21

10 4

(1) (2) (3) (4) (5) (6) (7)

2 16 21

Clutch housing Transmission case Rear transmission case Cover plate HST assembly Input shaft PTO metal (support)

14

13

(8) (9) (10) (11) (12) (13) (14)

12

8

15

18 19 20

Spur gear (13T) PTO shaft comp. Snap-ring Collar (30x40x2) Countershaft Snap-ring HST metal (support)

9

3

(15) (16) (17) (18) (19) (20) (21)

8

Mid-PTO case PTO control valve Front shaft Spur gear (19T-29T) Collar (25x35x2) Snap-ring Collar (41x55x10)

13

7

ISEKI TRACTOR TM223 SERVICE UPDATE

CHAPTER 5 3. DISASSEMBLY, INSPECTION, AND REASSEMBLY OF TRANSMISSION 3.1. DISASSEMBLY (1) Preparation for disassembly a. b. c. d. e. f. g. h. i.

Remove the implement. Drain the transmission case of oil. Disconnect the negative terminal of the battery. Remove the covers and other exterior parts. Remove the wire harnesses. Remove the piping. Remove the pedals and rods of the brakes and HST controls. Remove the front wheel drive shaft. Remove the tyres and disassemble the machine in accordance with the instructions in the service manual for the previous TM models.

(2) Remove clutch housing (1) from transmission case (2). (3) Remove HST assembly (5) along with input shaft (6) from the transmission case and cover plate (5). (4) Remove PTO metal (support) (7). (5) Remove spur gear (13T) (8). (6) Extract snap-ring (10) and collar (11) from the top of PTO shaft (9). (7) Extract snap-ring (13) from the end of countershaft (12). (8) Remove the bolts tightening HST metal (support) (14). (9) Remove HST metal (support) (14), observing the following instructions . a. Use push bolts (M8; 2 pieces). b. As a ring is installed on the PTO shaft, screw in the push bolt gradually and evenly. c. The ends of PTO shaft (9) and countershaft (12) should be softly tapped with a plastic hammer. (10) Remove mid-PTO case (15). (11) Remove PTO control valve assembly (16). (12) Extract front shaft assembly (17). (13) Remove RBB’s from the ends of PTO shaft (9), countershaft (12), and bevel pinion (13). Note: The RBB on the end of the bevel pinion should be removed along with spur gear (19T-29T) (18). 9

ISEKI TRACTOR TM223 SERVICE UPDATE

(14) Extract bevel pinion (13), collar (19), and snap-ring (20). (15) Remove rear transmission case (3) and hydraulics case. (16) Extrant PTO shaft (9) and PTO clutch assembly (21) at the same time. (17) Then proceed removing shafts, gears, collars, etc. 3.2. INSPECTION (1) Check each gear and shaft for damage, tooth bearing, etc. (2) Make sure that all radial roller bearings and needle roller barings turn smoothly and have no flaws. (3) Make sure that the oil seal lips and lip contact surfaces on shafts have no flaws. 3.3. PRECAUTIONS FOR REASSEMBLY (1) When assembling, pay attention to the installing direction of the gears, collars, etc. Never forget to install bearings and collars. (2) Before installing the PTO drive shaft, set the PTO change gear to the shifter. (3) After assembly, make sure that each shift lever moves smoothly. Operating load at lever top 4WD shift lever

6 kgf

PTO shift lever

4 kgf

Note: Instruction on the PTO clutch will be given in the next section.

10

CHAPTER 5 3. DISASSEMBLY, INSPECTION, AND REASSEMBLY OF PTO CLUTCH AND RELATED PARTS 3.1. CONSTRUCTION 3

2 31 30 29 28 27 26 25 24

23

from T2

5

22 fromC

21 4

1 34 33 32

35

20

6

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

7

O-ring (P5) O-ring (P7) Plug Snap-ring (30C) Washer (30x40x2) Snap-ring Plug Ring (30) Snap-ring Washer (30x40x2)

8

9

10

11

14

12

(20) (21) (22) (23) (24) (25) (26) (27) (28) (29)

(11) (12) (13) (14) (15) (16) (17)

Gear (33T) Collar (23x34x2) Ring (22) Bushing (22x25x15) Coupling (37x50x35) Gear (18T) Needle roller bearing (KT20264) (18) Washer (21x38x2) (19) Snap-ring (20C)

13

PTO shaft Snap-ring (85) Brake pressure plate Brake disc Brake pressure plate Seal ring (77) Piston Seal ring (77) Disc plate Separator plate

Fig. 5-3

The PTO clutch is composed of the parts mentioned above.

11

14

15

(30) (31) (32) (33) (34) (35)

16

17

18

Back-up plate Snap-ring (88) Spring Washer Snap-ring (32) Clutch case

19

ISEKI TRACTOR TM223 SERVICE UPDATE 3.2. FUNCTION (1) Pressurized fluid is continuously supplied through port T2 to the PTO clutch and the PTO discs are always immersed in circulation fluid. (During operation the poppet of the relief section of the hydraulic valve is set in the “floating” position.)

(4) Remove snap-ring (ø88 for hole) (31), and take out back-up plate (30), disc plates (28), and seperator plates (29).

(2) When the PTO swich is turned on, pressurized fluid delivered through port C activates the piston (26) to force separator plates (29) to come into contact with disc plates (28). Thus power is transmitted from PTO shaft (20) to gear (16). (3) When the PTO switch is tunred off, pressurized fluied drains through port T1. At the same time, piston (26) of the PTO clutch is pushed back by means of spring (32) and the separator plates and disc plates separate from each other to cease power transmission and pressure plates (23 & 24) come into contact with brake plate (23) to stop gear (16). (The gear should be stopped in about 7 seconds after the PTO switch is turned off.)

Fig. 5-4

While holding return spring (32) compressed with a special tool, remove snap-ring (34). 32 34

3.3. DISASSEMBLY Note: Disassembly of the PTO clutch assembly should be done in a clean, dust-free place. Excercise special attention to avoid damge of the seal rings, etc. (1) Extract the following parts from the rear part of the PTO shaft in the listed order: Fig. 5-5

a. b. c. d. e. f.

RBB Snap-ring (19) Washer (18) Gear (18T) (16) Needle roller bearing (17) Bushing (15)

(2) Remove the PTO clutch assembly rearward along with gear (33T) (11). (3) Remove gear (33T) (11) and bushing (14) from the PTO clutch assembly. (Remember collar (12).) 12

3.4. INSPECTION a. Clutch case (35) – Replace the cover assembly if it has a damaged or worn sliding surface. – If there is any damage to the cover assembly and the piston seal ring, these parts should also be replaced.

CHAPTER 5 b. Plate disc (28)

d. Also inspect other parts for wear and deformation and replace them if necessary.

– Inspection for disc thickness and serration wear Inspection items Disc thickness Surface flatness

Specified values

Usable limit

2.0±0.1 mm (0.075 – 0.083 in.) —

1.7 mm (0.067 in.) 0.2 mm (0.008 in.)

Note: Seal rings (25 and 26) should be replaced as a pair. e. Use gear oil of SAE 80. 3.5. REASSEMBLY Reassemble the parts in reverse order of disassembly, following these instructions.

– – – –

Fig. 5-6

Note: Each part should be washed clean before reassembly. Apply multi-purpose, quality grease to the bushing in advance. Every time a gear is installed, its smooth rotation should be checked. Every snap-ring should be seated securely in its groove.

c. Brake disc (23) a. When installing seal rings, apply fresh oil ahead of time and install them carefully so as not to damage them.

– Inspection for deformation and burning. – A seriously damaged or worn disc should be replaced. Inspection items Disc thickness Surface flatness

Specified values

Usable limit

2.92 – 3.08 mm (0.115 – 0.121 in.)

2.8 mm (0.11 in.)

—

0.2 mm (0.008 in.)

b. Install the pressure plate with the press-processed side turned towards the brake disc. 1

2

Pressprocessed surface

(1) Pressure plate (2) Brake disc Fig. 5-8 Fig. 5-7 13

ISEKI TRACTOR TM223 SERVICE UPDATE c. When installing the return spring, use a special tool; the snap-ring should be securely seated in the groove. (Fig. 5-5)

iv. Be sure to install seal rings (13) while taking care not to damage them. Apply grease to them ahead of time.

d. When installing snap-ring (ø88) (31), follow the next instructions:

v. The lobe of the brake disc should be seated in the groove of the HST transmission case as shown below.

i. Spring (32) should not dislocate from the washer (33).

Lobe of brake disc

ii. The opening of snap-ring (ø88) (31) should be located as illustrated when the snap-ring is installed. Location of opening of snap ring (ø88) 31

Spring (3 32 should not be dislocated. Outer circumference of washer 33

Fig. 5-10

Cut-away

Lobe

Jig

Fig. 5-9

e. During installing the PTO clutch/brake assembly into the transmission, make sure of the following points: (Fig. 5-3) i. Be sure to install plugs (3): two. ii. Be sure to install seal rings (8) while taking care not to damage them. Apply grease to them ahead of time. iii. Be sure to install washer (12). 14

Groove in the case

Fig. 9-1

AUXILIARY PUMP 4.05 cc/rev. x 2800 rmp x 0.912/1000 = 10.3 litres/min.

FLOW-DIVIDER 2 litres/min.

15 ø2.2

X A

P

b

N

HYDRAULIC VALVE ASS'Y B 4.5 liters/min.

W

REAR LIFT CYLINDER

OPT

T2

T3

CONTROL VALVE

P

RESERVOIR

SAFETY VALVE Cracking pressure: 155 kg/cm2 Relief pressure: 190 kg/cm2 C

P1

SLOWRETURN VALVE

W

MAIN CYLINDER

5±1 kgf/cm2

B

HST UNIT

MAIN RELIEF VALVE Relief pressure: 140 kg/cm2

T1

0 – 21.5 cm3/rev.

1.6±2 kgf/cm2

T

OIL FILTER (10µ)

21.5 cm3/rev. Pgλ

Pgβ

1.3±0.3 litres/min. at ∆P=18 kgf/cm2 Closing pressure: 28 kgf/cm2 or less Opening pressure: 21±3 kgf/cm2

Neutral valves

230±15 kgf/cm2

1. HYDRAULIC SYSTEM DIAGRAM

STRAINER (200 mesh)

T

a

PT

PTO CLUTCH VALVE C

MINI-ORBIT ROLL

CHECK VALVE/2.5 Cracking pressure: 2.0 kg/cm2

§1. GENERAL DESCRIPTION

MAIN PUMP 7.91 cc/rev. x 2800 rmp x 0.912/1000 = 20.2 litres/min.

L/C FILTER (80 mesh)

CLUTCH RELIEF VALVE RELIEF PRESSURE 18 kg/cm2

T2 (Lubricant)

PTO CLUTCH

Relief pressure: 105 kg/cm2

B. pressure Max. 10 kg/cm2

POWER STEERING CYLINDER

OIL COOLER

CHAPTER 9

CHAPTER 9. HYDRAULIC SYSTEM

Mounting port

Remote hydraulics control valve (Option)

Suction filter

PTO clutch vavle

Fig. 9-2

16

Main pump

Auxiliary pump

Mini-orbit roll

ISEKI TRACTOR TM223 SERVICE UPDATE 2. HYDRAULIC SYSTEM PIPING

3

Fig. 9-3

17

Two hoses and battery cable should be clamped together.

(1) Mini-orbit roll (2) Clamp (3) Oil cooler (4) Oil filter (5) HST unit

Hose should pass under axle bracket.

Two hoses should be clamped on underside of floor stay.

To and from oil cooler

Check valve 2.5 is installed inside the connector.

2

Two hoses should be clamped on floor stay.

P

T

R

From port T of mini-orbit roll

L

IN

OUT

A

1

4

5

A

From port N of PTO clutch valve

CHAPTER 9

ISEKI TRACTOR TM223 SERVICE UPDATE §2. SPECIFICATIONS

Suction filter

Rated flow rate Filtering density Filtering area

20 litres/min. 200-mesh 108.5 cm2 (16.8cu.in.) or more

Main gear pump

Working oil temperatures Theoretical delivery Maximum pressure

-30 to 90°C 7.91 cc 200 kgf/cm2 (2844 psi)

Relief valve

Cracking pressure

120 kgf/cm2 (1707 psi) or more [Leak: less than 300 cc (4.8 cu.in.)/min.] 140/+3/-0 kgf/cm2 (1911/+43/-0 psi) (under a flow rate of 15 litres/min.) 0.1 cc (0.16 cu.in.)/min. or less [under a pressure of 100 kgf/cm2 (1422 psi)]

Relief pressure Leak

Main control valve

Maximum flow rate (p–c) Maximum pressure C-port leak

18 litres 210 kgf/cm2 (2987 psi) 5 cc (0.8 cu.in.)/min. or less [under a pressure of 100 kgf/cm2 (1422 psi)]

Piston and cylinder

Piston diameter Cylinder bore Piston stroke

Ø65 mm (Ø2.56 in.) Ø65 mm (Ø2.56 in.) 75 mm (1.95 in.)

Lift capacity (at lower link end)

550 kgf (1411 psi)

Safety valve

155/+5/-0 kgf/cm2 (2250/+71/-0 psi) (under a flow late of 0.3 litre/min.) 190 kgf/cm2 (2702 psi) or more (under a flow rate of 20 litres/min.) 0.1 cc (0.016 cu.in.)/min. or less [under a pressure of 100 kgf/cm2 (1422 psi)]

Cracking pressure Relief pressure Leak

Remote hydraulics (Option) Control valve

Controlled flow rate (port B)

4.5±0.5 litres/min.

• Solenoid valve

Voltage Resistance Insulation resistance

10.2 – 14.4 V 7.5 – 8.2 ΜΩ (at 20°C) More than 100 MΩ on DC 500 V megger

18

CHAPTER 9

Auxiliary gear pump

Working oil temperatures Theoretical delivery Maximum pressure

-30°C to 90°C 4.05 cc/rev./2800 rpm

PTO clutch valve

Maximum flow rate (port P) Controlled flow

15 litres/min. 2.0±0.3 litres/min.

• Flow-control valve

Maximum flow rate Controlled flow rate

25 litres/min. (port P) 2.0±0.3 litres/min. (port CF) at port CF load of 4.9 MPa (50 kgf/cm2) at port EF load of 9.8 MPa (100 kgf/cm2)

• Relief valve

Cracking pressure Relief pressure

1.77±0.1 MPa (18±1 kgf/cm2)

Voltage Coil resistance Insulation resistance

DC12V (10.2 – 14.4V) 10.4±1Ω (at 20°C) More than 1 MΩ on 500V megger

• Solenoid valve

19

ISEKI TRACTOR TM223 SERVICE UPDATE §3. HYDRAULIC VALVES (FLOW-DIVIDER AND PTO CLUTCH DRIVING VALVES)

G1/4(PT1/4)

To port P of mini-orbit roll

From auxiliary hydraulic pump

G1/4(PT1/4)

4

Port N

Port P

7

5

6

8

9

10

11

12

T2

6

8

1 C

2

3

T1

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12)

Body Solenoid valve assembly Wire harness assembly Flow-control valve assembly Adjusting screw O-ring Lock nut Spring seat Spring Poppet Sunk plug O-ring

9 10

Mounting surface (Bottom)

C Clutch port

1 7 5

T1 T2 (Lubricant)

4

N

11 12 N HYDRAULIC CIRCUIT

2

Fig. 9-4

3

20

CHAPTER 9 1. FLOW CONTROL VALVE Hydraulic fluid is divided into the power-assisted steering system (mini-orbit roll assembly) and HST unit through the flow control valve housed in the hydraulic valve body. 1.1. CONSTRUCTION AND COMPONENTS FLOW CONTROL VALVE 11

8

9 10 1 5

EF

CF

CF

9

2 5

EF

8 11

3 10

1

4

7

6 2 3 4

(1) Body (2) Spool (3) Spring guide

(4) Spring (5) Spool stopper (6) Plug

(7) O-ring (8) O-ring (9) O-ring

(10) O-ring (11) L/C filter

7 6

Fig. 9-5

1.2. INSPECTION When hydraulic fluid is not divided as intended, disassemble the flow control valve, wash disassembled parts and reassemble them. After reassembly, remove the filter and confirm that the spool slides smoothly from filter-mounted side. 2. RELIEF VALVE 2.1. GENERAL DESCRIPTION a. This valve regulates the maximum pressure in the PTO clutch circuit. The regulated pressure can be set with the adjusting screw. 7 5 6 7

5

Fig. 9-6

6

8

9

10

(5) Adjusting screw (8) Spring seat (6) O-ring (9) Spring (7) Lock nut (10) Poppet

21

8 9 10

ISEKI TRACTOR TM223 SERVICE UPDATE b. During operation, poppet (10) is always in the floating position to continually supply hydraulic fluid to the PTO clutch. 2.2. INSPECTION AND ADJUSTMENT The valve should be inspected and adjusted as described below when it is installed on the machine: To port P of mini-orbit roll

From auxiliary hydraulic pump

5 7 R 1/8 (PT 1/8) (Pressure checking port)

(5) Adjust screw (7) Lock nut

Fig. 9-7

a. Connect a pressure gauge to the pressure checking port shown above. b. Start the engine and accelerate it to a speed faster than 1500 rpm. c. The relief pressure with the PTO switch turned on should be adjusted to be 1.77±0.1 MPa (18±1 kgf/cm2) by turning the adjusting screw.

22

CHAPTER 9 3. FLOW CONTROL VALVE 3.1. GENERAL DESCRIPTION The solenoid valve is switched on or off by operating the PTO switch. With this switch operation, the solenoid shifts the spool to the left or the right to bypass or block the flow to port B. 3.2. CONSTRUCTION 4

3

2

A

5

B

(1) (2) (3) (4) (5)

1

C

O-ring O-ring O-ring Spring Spool (The spool should not be disassembled. )

D M18 × P1.5

A : OIL IN

C : DRAIN

B : CONT

D : DRAIN Prouduction lot No.

Fig. 9-8

3.3. INSPECTION a. All the O-rings (1, 2, and 3) should be free of flaws. b. Apply DC 12V across the terminals of the solenoid and check to see that the spool moves smoothly through the openings (A and C). Note: The spool should not be disassembled. c. When the spool does not move smoothly, clean the spool by applying compressed air through the openings (A, B, C, and D) and apply oil through them. Then check to see whether the spool moves smoothly or not by applying DC 12V across the terminals of the solenoid. 23

ISEKI TRACTOR TM223 SERVICE UPDATE 4. REMOTE HYDRAULICS CONTROL VALVE (OPTION)

R 1/8 (port B)

1

7

8

11

10

13

9

3

4

5

6

(1) Body (HVA1) (2) Flow control spool (2.2) (3) Spool (4) Spring (5) Spring (HC012) (6) Solenoid (7) Plug (8) O-ring (9) Spring (HC036) (10) Collar (11) Sunk plug (12) O-ring (13) Sunk plug

2 12 Port P SECTION S1- S1

Port T Port N

B X Production lot No.

a

b

70920 N

S1

ø2.2

S1

T

P

HYDRAULIC CIRCUIT

Fig. 9-9 24

CHAPTER 9 §4. TROUBLESHOOTING Problems PTO shaft does not turn.

Causes

Countermeasures

1. PTO change lever a. It is not shifted to the ON position.

• Shift the lever to the ON position.

2. Auxiliary gear pump a. Seized or damaged

• Measure the pressure and replace the whole assembly if it is defective.

3. Hydraulic valve assembly 3.1. Flow control valve a. Clogged with dirt

• Disassemble and wash. Especially make sure of the choke orifice in the spool.

b. Seized spool

• Disassemble and wash. • Correct minor flaws and dents. • Replace the whole assemble with a new one.

3.2. Solenoid valve assembly a. The valve is not electically alive.

• Check for short circuits, poor connections, etc. and correct them.

b. Burnt coil

• Measure the resistance across the terminals of the coil (10.4 Ω at 20°C). A defective coil assembly should be replaced with a new one.

c. Clogged or seized spool

• Apply DC 12V to the valve removed from the machine and check to see if the spool reacts smoothly or not. If it does not, wash and supply compressed air and oil through the openings and check again. • An defective valve should be replaced as an assembly.

3.3. Relief valve a. Damaged spring

• Replace it with a new one.

b. The poppet is seized in the OPEN position due to clogging or seizure.

• Disassemble and wash. • Correct minor dents and flaws.

25

ISEKI TRACTOR TM223 SERVICE UPDATE

Problems

Causes

Countermeasures

3.4. PTO clutch • Worn or burnt disc plate

• Replace with a new one. • When a disc plate is burnt, make sure that the hole for the poppet is not clogged.

3.5. Hydraulic circuit

2. The PTO shaft does not stop turning.

3. PTO shaft follows the PTO clutch.

a. Worn seal rings or rings

• Replace with new ones.

b. Oil is leaking through plugs.

• A leaking plug should be applied with screw locking adhesive and tightened.

1. Solenoid valve a. Power supply does not stop.

• Check for the PTO switch, wire harness, and solenoid for internal short circuits, and correct them or replace defective parts with new ones.

b. The spool is seized in the ON position.

• Clean by washing and blowing. • Replace with a new solenoid valve.

1. PTO clutch a. A worn brake disc

4. Remote hydraulics do not work.

• Replace a defective part with a new one. (As the PTO shaft does not sometimes stop due to excessive inertia of the implement, the implement should be disconnected ahead of time.)

• Remote hydraulics control valve

26

• The control valve should be checked in a similar way as for the PTO control valve.

CHAPTER 13

CHAPTER 13. SERVICE DATA 1. SPECIFICATIONS & CAPACITIES Engine Oil Use engine oil of the appropriate SAE viscosity. Oil must meet or exceed; MIL-L-2104C requirements, API Service “CD”. TM223 Capacity (litres) ....................................................................................................................................................... 2.7 Recommended Viscosity: 78 °F (25 °C) and Above .................................................................................................................... SAE 30 W, 10 W - 30 32° - 78 °F (0° - 25 °C) ....................................................................................................................... SAE 20 W, 10 W - 30 Below 32 °F (0 °C) ............................................................................................................................. SAE 10 W, 10 W - 30 Recommended Change Intervals: Initial Oil and Filter Change .......................................................................................................................... 50 hours Oil and Filter Change, Thereafter ........................................................................................................... Every 150 hours Engine Coolant Freezing Protection (Original factory Fill) ................................................................................................................... -34 °C (-30 °F) Recommended Coolant ........................................................................................................................... 50/50 mixture ethylene glycol and water System Capacity (litres) .......................................................................................................................................... 7.1 Fuel Tank Capacity (litres) ...................................................................................................................................................... 23.0 Fuel recommended, Above 4 °C (39 °F) ....................................................................................................................................... No. 2 or No. 2-D Fuel Recommended, Below 4 °C (39 °F) ....................................................................................................................................... No. 1 or No. 1-D Transmission & Differential Housing (Including Hydraulic System) Capacity (litres) FH-SM (with HST Mid-mount PTO and power-assisted steering) .................................................................. 14.0 Recommended Lubricant ............................................................................................................................. Shell DONAX TD or equivalent Recommended Change Interval ..................................................................................................................... First 50 hours every 200 hours thereafter Front Axle Capacity (Common Reservoir) (litres) .................................................................................................................... 2.7 Recommended Change Lubricant .................................................................................................................. SAE 80 GL-4 Recommended Change Interval ................................................................................................................... Every 300 hours Grease Fittings Greasing Interval (All Fittings) ..................................................................................................................... Every 50 hours Recommended Grease ......................................................................................................................... Lithium-base grease No. 2 NOTE: Change intervals stated above are for normal usage. Due to adverse operating conditions that may be experienced (extremely dusty or muddy), change intervals may need to be more frequent.

27

ISEKI TRACTOR TM223 SERVICE UPDATE 2. LUBRICATION/FILL POINTS General layout of lubrication, fill and drain locations on the tractor:

9

10

Ref.

Description:

Type:

1

Fuel Tank

Diesel Fuel

2

Radiator

Engine Coolant

3

Engine

Engine Oil

4

Transmission Case

Multi-purpose Oil

5

Front Axle

Multi-purpose Oil

6

Axle Pivots

Grease

7

HST pedals

Grease

8

Brake pivots

Grease

9

Drag Rod & Tie-rod

Grease

10

Knuckle Arm

Grease

5 1 8

6

4

7

Transmission oil level

3

2

Engine oil level

9

10

9 Greasing point Oil filler Oil drain Level point Radiator filler Radiator drain

28

CHAPTER 13 3. PERIODIC MAINTENANCE SCHEDULE Recommended Interval, Each: Day

Item To

Action

Check

Required

50 hr 100 hr 200 hr 300 hr Year

●

All controls, switches

Inspect and repair

●

All fasteners, hardware

Check and tighten

●

Hoses, fan belt, wiring

Inspect and repair

Grease fittings

Lubricate

Engine oil level

Replace

Engine oil & filter

Check and replenish

Transmission oil level

Replace and clean

● ● (*)

●

● (*)

●

Transmission oil & screen

Replace cartridge

(*)

●

Hydrostatic oil filter

Replace cartridge

Front axle oil level

Replace

Front axle oil

Clean of debris

Air screens & radiator

Check and replenish

Radiator coolant

Drain, flush & replace

●

Fan belt tension

Check and adjust

●

Air cleaner dust ejector

Clean

Air cleaner elements

Inspect, clean or replace

●

Fuel tank level

Fill

●

Fuel filter sediment bowl

Inspect and clean

Fuel filter element

Replace and bleed

●

Battery & cables

Check, clean & tighten

●

Battery electrolyte level

Check and replenish

●

Lights, flashers & horn

Check and repair

●

Brake adjustment & balance

Check and adjust

●

Tyre pressure & condition

Check and adjust

●

Wheel bolt torque

Check and adjust

●

Steering free-play

Check and repair

Front axle end-float

Check and adjust

Clutch housing leaks

Remove plug & check

● ● ● ●

●

●

● ●

Items marked (*) indicate initial service interval only. Subsequent (later) intervals marked “●”. Intervals above are for normal usage. Severe operating conditions (wet, dusty, etc.), or when previous servicing has indicated need for more frequent action, intervals may need to be shortened.

29

ISEKI TRACTOR TM223 SERVICE UPDATE

ENGINE 1. SERVICE STANDARDS -: Repair instructions •: Remarks mm (in) Part names and inspection items

Nominal Values requirdimensions ing service

Standard values for reassembly

Usable limits

Service instructions and remarks

CYLINDER Cylinder compression kg/cm2 (psi) Cylinder bore wear at A–A

34 (484) or more

30 (427) or less

Ø78.2(3.08)

0.2 (0.008) or more

300 rpm

• Honing after boring • Bore should be finished within a tolerance of 0+40µ against nominal diameter of oversize piston.

12 mm A

A

- Use over-size pistons and rings.

Flatness of cylinder block top surfaces

0.15 (0.006) or more

0.08 (0.003) or less

• Correct on a surface grinder. - Ground down limit: 0.4 (0.015)

CYLINDER HEAD 1.4 (0.055) or more

• Correct valve seats. - Valve seat angles: 45°

C o w nta id c th t

Subsidence of valve seats

Subsidence Contact width of valve seats

2.0 (0.008) or more

1.3 – 1.6 (0.051 – 0.063)

Flatness of cylinder block bottom surface

0.15 (0.006) or more

0.08 (0.003) or less

Tightening torque of cylinder bead bolts kg·m (ft·lb)

• Correct with a 75° valve seat cutter. • Correct on a surface grinder. - Ground down limit: 0.4 (0.015)

5.5 – 6.0 (39.8 –43.4)

PISTON Piston pin wear

Ø22(0.866)

Ø21.97 (0.365)

30

• Replace.

ENGINE mm (in)

Part names and inspection items

Nominal Values requir- Standard values Usable dimensions ing service for reassembly limits

Service instructions and remarks

PISTON RINGS Piston ring gaps Compression

(inserted in gauge) 1st

2nd

Oil

0.25 – 0.40 1.5 (0.0098 – 0.0157) (0.059) 0.25 – 0.40 (0.0098 – 0.0157)

1.5 (0.059)

• Replace.

0.25 – 0.40 1.0 (0.0098 – 0.0157) (0.0394)

Clearance in piston ring groove Compression

1st

0.06 – 0.10 (0.0024 – 0.0039)

2nd

0.03 –0.07 (0.0012 – 0.0028)

Oil

0.02 – 0.06 (0.0008–0.0024)

0.3 (0.012)

• Replace piston or rings. - Installed with notch mark turned upward with gaps apart 120° to each other.

0.15 (0.006)

Ring gap positioning

• 120° apart to each other – Gap of oil ring and one of expander should be apart 180° to each other.

CONNECTING ROD Thrust play between small end and piston pin boss

1.7 – 2.75 (0.07–0.11)

Clearance between small end bush and piston pin

0.008 – 0.02 (0.0003–0.0008)

0.05 (0.002)

• Replace piston pin or bush. - Clearance should be such that piston pin rotates smoothly in small end bush with big end held by hand.

Clearance between connecting rod bearing and crankpin

0.027 – 0.075 (0.0011 – 0.0031)

0.12 (0.005)

• Replace bearing.

Inspection of connectingrod and crank pin faces Thrust play of connectingrod big end

• Correct or replace bearing.

0.175 – 0.30 (0.007–0.012)

31

0.35 (0.014)

• Replace connecting rod.

ISEKI TRACTOR TM223 SERVICE UPDATE mm (in)

Part names and inspection items

Nominal Values requir- Standard values Usable dimensions ing service for reassembly limits

Parallelism between big end and small end holes [per 100 (3.94)]

0.05 (0.002) or less

Weight difference between assembled pistons g (lb)

15 (33) or less

Tightening torque of bearing cap bolts kg·m (ft·lb)

2.7 – 3.3 (19.5–23.9)

0.15 (0.006)

Service instructions and remarks • Correct or replace.

- Pay attention to weight classification of connecting rods

CRANKSHAFT Journal wear

Ø50 (1.970)

Ø49.50 (1.949)

• Use under-size bearings:0.5, 1.0 (0.02, 0.04) - When usable limit is exceeded, replace crankshaft.

Crankpin wear

Ø40 (1.576)

Ø39.50 (1.556)

• Use under-size bearings. - When usable limit is exceeded, replace crankshaft.

Clearance between journal and bearing

0.12 (0.047) or more

0.029 – 0.080 (0.0011–0.0031)

• Replace bearings.

Thrust play of crankshaft

0.3 (0.012) or more

0.04 – 0.215 (0.0016–0.0085)

• Replace thrust bearings.

Run-out of crankshaft

0.025 (0.001) or less

Crankshaft balance (reference value) g·cm (ft·lb)

36 (0.0026) or less

Tightening torque of journal bearing caps kgf·m (ft·lb)

5.0±0.5 (36.2±3.6)

• Static and dynamic balance

CAMSHAFT Journal wear

Ø33 (1.3)

Run-out of camshaft

Cam lobe height

Ø32.75 (1.290) 0.1 (0.004) or more

0.05 (0.0190) or less

27 (1.06)

Replace camshaft.

• Replace camshaft.

26.6 (1.048)

• Replace camshaft.

Height

32

ENGINE mm (in)

Part names and inspection items

Nominal Values requir- Standard values Usable dimensions ing service for reassembly limits

Thrust play of camshaft

0.2 (0.008) or more

0.05 – 0.174 (0.002–0.007)

Service instructions and remarks • Replace thrust plate.

TIMING GEARS Timing gear backlash

0.04 – 0.12 (0.0016–0.0047)

Interference between cam gear and camshaft

0.033 – 0.067 (0.0013 – 0.0026)

Clearance between idle gear bush and idle shaft Idle gear shaft wear

0.15 (0.0059) Ø18 (1.06)

0.30 (0.0118)

0.016–0.045 (0.0006–0.0019)

• Replace gears.

• Replace gear or shaft.

0.1 (0.004) or more

• Replace idle gear shaft.

TIMING GEARS Wear of inlet valve stem

Ø7 (0.28)

Ø6.90 (0.272)

• Replace valve.

Wear of exhaust valve stem

Ø7 (0.28)

Ø6.89 (0.271)

• Replace valve. – When replacing a valve due to wear of valve seat, valve guide should be also replaced.

Clearance between inlet valve stem and valve guide

0.15 (0.006) or more

0.015 –0.047 (0.00059 – 0.00185)

• Replace valve or valve guide.

Clearance between exhaust valve stem and valve guide

0.20 (0.008) or more

0.020 – 0.072 (0.00079 – 0.0028)

• Replace valve or valve guide.

0.004–0.04 (0.0002–0.0016)

– Apply oil to valve guide, and install on a press.

Interference between valve guide and cylinder head Valve thickness

0.8 (0.03)

0.55 (0.022)

• Replace valve.

8.3 (18.3)

7.35 (16.2)

• Replace valve spring.

36.0 (1.42)

35.0(1.38)

• Replace valve spring.

Thickness

Inspection of valve springs: Valve spring tension (when compressed to X mm): kg(lb) Free length

X = 31 (1.22)

33

ISEKI TRACTOR TM223 SERVICE UPDATE mm (in)

Part names and inspection items

Nominal Values requir- Standard values Usable dimensions ing service for reassembly limits

Deviation from vertical

1.0 (0.039) or less

Valve clearance (for both inlet and exhaust valves)

1.0 (0.04)

0.25 (0.010)

Service instructions and remarks • Replace valve spring.

• Adjust while engine is cool.

ROCKER ARM AND RELATED PARTS Clearance between rocker arm bush and rocker arm shaft Wear of rocker arm shaft

0.2 (0.008) or more

0.01 – 0.05 (0.0004–0.002)

Ø16 (0.63)

Push rod bending

• Replace bush or shaft.

Ø15.85 (0.62)

• Replace.

0.3 (0.012) or more

• Replace.

TAPPET Tappet clearance in cylinder block Tappet wear

0.1 (0.004) or more

0.02 – 0.062 (0.0008–0.0024)

Ø20 (0.788)

• Replace tappet.

Ø19.95 (0.786)

Contact surfaces of tappet and cam

• Replace tappet.

• If they are worn or deformed seriously, replace them.

OIL PUMP Lubricant pressure kg/cm2 (psi)

2.0 (28.4) or more

3.5 – 4.0 (49.7 – 56.8) or more

• Oil leaks and clogging of lubrication line should be corrected. - at 1400 rpm of engine

Oil pump delivery lit.(IMP gal.)/min. at 2300 rpm SAE 30 Oil temp.: 50±3°C Delivery pressure: 6 kg/cm2 (85 psi)

13.6 (2.99)

34

ENGINE mm (in)

Part names and inspection items

Nominal Values requir- Standard values Usable dimensions ing service for reassembly limits

Service instructions and remarks

FAN BELT Belt deflection

5 – 10 (0.2–0.4)

10 kg

• Adjust.

WATER PUMP Delivery lit. (IMP gal.)/min. Pump speed: 3000 rpm Total lift: abt. 2.8 m-Aq Water temp.: 80°C

60 (13.2)

THERMOSTAT Starts to open at a temperature of °C (°F) (under atmospheric pressure)

75 – 78 (167 – 172)

Fully open at a temperature of °C (°F) (under atmospheric pressure)

90 (194)

• Replace defective thermostat.

FUEL SYSTEM Clogged or cracked fuel pipes, injection pipes, nozzle holders, or loose joints, or defective packing

• Repair or replace defective parts.

Clogged or damaged fuel filter element

• Replace.

FUEL INJECTION SYSTEM Spraying condition

1) 2) 3) 4)

The spray should appear fine and even to the eye and free from relatively large droplets. Fuel injection should be directed properly without any sideway scattering. Nozzle body should be free from fuel dripping after injection is completed. Injection of weak force should be consecutively provided through the initial stage of injection.

Nozzle opening pressure kg/cm2 (psi)

120 (1707)

35

110 – 130 (1654 –1849)

• Adjust or replace.

ISEKI TRACTOR TM223 SERVICE UPDATE 2. TIGHTENING TORQUE OF MAJOR FASTENERS Locations

Tightened parts

Cylinder head

Cylinder head bolts Rocker shaft Injection nozzles Glow plugs Glow plug connectors Hangers

Cylinder block

Bearing caps Front plate

kgf·m(ft·lb)

(M8) (M12)

Thrust plate Rear plate

(M10) (M12)

Oil strainer clamp Injection pump cover

6.0±0.5 1.9±0.5 4.5±0.5 1.75±0.25 0.1 – 0.15 4.1±0.6

(43.2±3.6) (13.7±3.6) (32.5±3.6) (12.7±1.8) (0.72 – 1.08) (29.6±4.3)

5.0±0.5 1.9±0.5 — 0.8±0.2 4.1±0.6 — 1.9±0.5 0.8±0.2

(36.2±3.6) (13.7±3.6) — (5.8±1.4) (29.7±4.3) — (13.7±3.6) (5.8±1.4)

Crankshaft

Connecting rod bearing caps Flywheel Crankshaft pulley

3.0±0.3 9.5±1.0 18.9±1.9

(21.7±2.2) (68.7±7.2) (136.6±13.7)

Timing gear case

Gear case Plug (covering governor fulcrum) Oil pump Angleichung (adaptation) unit

1.9±0.5 1.3±0.5 0.8±0.2 2.0 – 3.0

(13.7±3.6) (9.4±3.6) (5.8±1.4) (14.5 – 21.6)

Others

Water pump Thermostat housing Water pump outlet pipe Inlet manifold Exhaust manifold Fan Starter Generator

1.9±0.5 1.9±0.5 1.9±0.5 1.9±0.5 1.9±0.5 0.8±0.2 8.4±0.8 4.1±0.6 1.9±0.5 0.8±0.2

(13.7±3.6) (13.7±3.6) (13.7±3.6) (13.7±3.6) (13.7±3.6) (5.8±1.4) (29.6±4.3) (29.7±4.3) (13.7±3.6) (5.8±1.4)

1.9±0.5 2.0 – 2.5 2.0 – 2.5 4.0 – 4.5 0.8±0.2

(13.7±3.6) (14.5 – 18.1) (14.5 – 18.1) (28.9 – 32.5) (5.8±1.4)

(M10) (M8)

Solenoid Fuel injection pump

Injection pump body Fuel pump connector Injection pipe Delivery valve holders Weight bracket

Tightening torque for standard bolts:

M6 × 1 M8 ×1.25 M10 × 1.25 M12 × 1.25

(7T) (7T) (7T) (7T)

(kgf·m)

(ft·lb)

0.8±0.2 1.9±0.5 4.1±0.6 8.4±0.8

4.5 – 7 10 – 17 25 – 34 55 – 67

36

TM223 TRACTOR SERVICE MANUAL

APPENDIX

APPENDIX

Be sure to install snap rings.

Install RBB with its snap ring turning forward.

1. PRECAUTIONS FOR REASSEMBLY 1.1. TRANSMISSION Apply adhesive to contacting surface.

Install along with HST metal. Be sure to install seal rings while taking care not to damage them and apply grease to them ahead of time. Apply proper amount of adhesive to avoid scattering of adhesive.

Be sure to install seal rings while taking care not to damage them and apply grease to them ahead of time.

Apply adhesive to contacting surface.

Apply adhesive to contacting surface. Apply wear-proofing grease.

Be sure to install plugs: two.

Be sure to install washer.

Bac Backlash: klash: 0.1 – 0.2 mm, which is adjusted byy shimming dif-metal.

Apply adhesive to contacting surface. Apply grease.

Install roll pins with seam facing downwards and retain them with wire.

When installing HST unit, be sure to set an O-ring to port T.

As drive pinion and ring gear make a pair, they should have the same punched marking. Press in roll pin ( 6 x 16). Apply adhesive to contact surfaces. Apply adhesive.

Install adaptor with threaded part facing forward.

Apply grease.

Apply grease.

• Each snap ring and thrust collar should be installed without fail and in proper direction. • Each sub-assembled gear should be smoothly turned manually before installation.

37

Install gear in correct direction with clutch claws facing forward.

TM223 TRACTOR SERVICE MANUAL

APPENDIX

1.2. FRONT AXLE AND DRIVE MECHANISM

Apply wear-proofing grease.

Apply adhesive.

Apply grease to dust seal.

Apply wear-proofing grease. Apply grease.

Apply grease to bush.

Apply grease. Fore-and-aft play of front axle: 0 to 0.2 mm After play has been set, axle should rock smoothly.

Be sure to install snap ring. Drive in roll pin in correct direction and retain it with wire securely.

Be sure to install snap ring.

Apply wear-proofing grease. After assembly dif-pinions should turn smoothly.

Be sure to install snap ring.

Be sure to install snap ring.

Apply adhesive to contacting surfaces.

Be sure to install snap ring.

Apply grease to shaft seal, which should securely be driven in with a driving-in tool.

Apply grease. Be sure to install snap rings.

Apply wear-proofing grease.

Apply adhesive to blind plug.

38

Drive in roll pin in correct direction and retain it with wire securely.

TM223 TRACTOR SERVICE MANUAL

APPENDIX

1.3. REAR AXLE AND BRAKES Backlash: 0.1 – 0.2 mm, which is adjusted by shimming.

Take care not to miss installing spring.

Apply wear-proofing grease to dif-pinions, dif-side gears, and thrust collars. Standard shimming thickness: 0.4 mm 0.1 mm x 2 0.2 mm x 1

Standard shimming thickness: 0.4 mm 0.1 mm x 2 0.2 mm x 1 Apply grease. After assembly, revolving parts should turn smoothly.

Apply grease. Oil seal should be installed in correct direction.

Be sure to install snap ring.

Tighten bolt with brake arm pulled forward and brake drum centred.

Apply grease and press in using press-in jig. Apply grease to where oil seal is installed. Be sure to install snap ring.

Install pinion shaft holder in line with wheel pinion.

Apply adhesive and tighten bolts (M6 x 9T) securely. After having assembled differential, dif-pinions turn smoothly.

Be sure to install snap ring.

39

TM223 TRACTOR SERVICE MANUAL

APPENDIX

2. WIRING DIAGRAM

Front small lamp (RH) 12V 5W 21W 5W

0.5 B

99C:0.5 B

0.5 RB

204B:0.5 LY

0.5 GB

73B:0.5 GY

Front turn signal lamp (RH) 12V 21W

Instrument panel

POWER SUPPLY

99C:0.5 B

ACCESSORY

204B:0.5 LY

EARTH

73B:0.5 GY

Hazard warning signal switch

73: 0.5 204: 0.5 210A: 0.5 99B: 0.5

GY LY RW B

21W

Rear turn signal lamp (RH)

5W

Tail lamp (RH)

21W

Stop lamp (RH)

Main beam switch

Head lamp (RH) 12V 45/40 W

C2

LE

L

J

I

G 8

0.5 YR 0.5 LW 0.5 GB 0.5 Y 0.5 RY 0.5 G 0.5 YB

12: 0.5 B 14: 0.5 P 16: 0.5 GY

99:

0.85 B

70:

1.25 R

For opt (AC) 100W

OPTION External hydraulic switch 1.25 L 1.25 LB 1.25 LW

Up

0.85 G 0.85 L

0.5 RY

99E: 0.5 B

0.5 B

3

503: 0.5 BR 502: 0.5 P

5W

Legistration plate lamp

301:0.5 LGB

700:0.5 W

701: 0.5 WB

700: 0.5 W

502: 0.5 P 99: 0.5 B 501: 0.5 PB

502: 0.5 P 99: 0.5 B

1

2

99B: 0.5 B

99: 0.5 B 503: 0.5 BR

210: 0.5 RW

0.5 RL

34C: 0.5 RY

Diode (3A)

70: 0.5 R

Diode (3A)

0.5 YB

Solenoid valve External hydraulic (Down) 0.85 R

Solenoid valve External hydraulic (Up)

108B: 0.5 WR 34: 0.5 Y 134: 0.5 YB

73: 0.5 GY

Down Stop lamp switch

10B: 0.5 RB

2:

99: 0.5 B

35: 0.5 YR 2: 0.5 RL 5: 0.5 YL

0.5 YL

0.5 YB 0.5 LW 0.5 GB 0.5 Y 0.5 RY 0.5 G 0.5 RB

0.5 GW

503: 0.5 BR 99: 0.5 B

11: 1: 2: 17: 5: 6: 6:

72: 0.5 207: 0.5 73: 0.5 108: 0.5 70: 0.5

15: 0.5 YW 13: 0.5 RY 7: 0.5 YL

GB RY GY WR R

206: 0.85 GL 36: 0.5 G 36: 0.5 G 36: 0.5 G

205: 0.5 GR

99: 0.85 B

36: 0.85 G

206: 0.85 GL

2: 0.5 RL 102: 0.5 LR 3: 0.5 RY 103: 0.5 YR

Horn

1:

3 K

Parking lamp switch

99A: 0.5 B

5:

B

A B G I J K L

Fuel switch 2: 0.5 RL 102: 0.5 LR 3: 0.5 RY 103: 0.5 YR 209: 0.5 RB

5A 5A 5A 5A

1

106

1: 23: 72: 34: 5: 6: 10:

4:

211: 0.5 RL 212: 0.5 LR 213: 0.5 RY 214: 0.85YR 4: 0.5 GW 5: 0.5 YL 1: 0.5 YB 7: 0.85 P

5 A

CB 104

Fuse box 211: 0.5 RL 212: 0.5 LR 213: 0.5 RY 214: 0.85YR 4: 0.5 GW 5: 0.5 YL 1: 0.5 YB 7: 0.85 P

6 2

1 2 3 5 6 7 8

99D: 0.5 B 35: 0.5 YR

31

GB RL GY R GR

49

0.5 0.5 0.5 0.5 0.5

49a

GW LgW LgR Lg

1.25 L 1.25 LB 1.25 LW

99D: 0.5 B 214: 0.5 YR 212: 0.5 LR

0.5 0.5 0.5 0.5

7

Flasher unit

23: 0.5 LW 10: 0.5 B

Engine stop solenoide

20 B

Water temp. Oil pressure sensor switch

16: 0.5 BW 99: 0.5 B

Diode (3A) Battery 55B24R 435CCA

Fuel pump 0.85 BW

11: 0.5 W

23: 0.5 LW

99: 3 B

99: 3B 6: 3BW

34: 0.5 Y 204: 0.5 LY 203: 0.5 LB 73: 0.5 GY 72: 0.5 GB 99: 1.25 B

16: 0.85 BW 15: 0.85 LR

16: 0.85 BW 15: 0.85 LR

301:0.5 LgB 302:0.5 LgR

301:0.5 LgB 302:0.5 LgR

302: 0.5 LgR

701: 0.5 WB

702: 0.5 RW

702: 0.5 RW

202: 0.5 R

302: 0.5 LGR 202: 0.5 R

501: 0.5 PB 99: 0.5 B

501: 0.5 PB 99: 0.5 B

501: 0.5 PB

31: 13: 99: 302: 3R 0.85 Lg 2 BY 3 BW 3 BW 3 RW 3R 0.85 LR 3 BY 3 BW 3 BR 3 RW

0.5 LR 0.5 Y 1

3

Starter relay

Opt for trailer 7-pole socket 0.5 R

14: 32: 31: 6: 6: 33:

209: 0.5 RB

1.25 WR 0.5 G 0.5 GY 0.5 GB 0.5 YB 0.5 GW

0.85 R 0.85 G 0.85 WG 0.85 GB 0.85 RG 0.5 GW 0.85 RW 0.85 RY

215: 3 R

108: 36: 73: 72: 134: 4:

5A 5A 10A 20A 5A 10A 20A 20A 5A 5A

For opt (AC) switch 100V

Solenoid valve

73A: 0.5 GY 72A: 0.5 GB 210B: 0.5 RW 99F: 0.85 B 203A: 0.5 LB 204A: 0.5 LY

Relay (5P)

W WB Subchange switch

215: 3 R

134: 0.5 YB 32: 0.85 Lg 33: 2 RW 33: 2 RW

10: 0.85 RB 15: 0.85 LR 301: 0.5 LgB

0.5 LY 0.5 LB 1.25 WR 1.25 R 0.85 RL

Enginestop relay

134: 0.85 YB 32: 0.85 LR 33: 2 RW 33: 2 RW

Timer 10 sec.

204: 203: 108: 70: 8:

13: 2 BY

0.5 LY 0.5 LB 1.25 RW 0.85 RG 1.25 RG 0.85 R 0.85 RB 0.85 LR 0.85 BW

Starter motor

204: 203: 108: 70: 8: 37: 10: 15: 301:

Slow blow fuse (40A)

Slow blow fuse (50A)

S

0.85 B 0.85 BW 0.85 P 0.85 RL

12: 3 W 24: 3 W

E

20 B

Alternator 12V 40A

12V 1.0 kW

99B: 16: 7: 8:

B B

301: 0.5 LgB

215A: 3 R

2

216: 3 R

99: 0.85 B

216: 3 R

2 BY 2 BY 0.5 B 0.5 LgR

14: 3 R

25: 3 R

70: 1.25 R

Glow plugs

L

211: 0.5 RL 213: 0.5 RY 99C: 0.5 B

34: 0.5 Y 204: 0.5 LY 203: 0.5 LB 73: 0.5 GY 72: 0.5 GB 99: 1.25 B

16: 0.85 BW

99: 3B 6: 3BW

Slow blow fuse (50A)

R

Head lamp (LH) 12V 45/40 W

70:1.25 R 210:0.85 RW

Diode (3A)

0.85 B

20 B

70: 1.25 R 210: 0.5 RW

R B2

L

T

50

H

BR

1

B1

L

GY GB RW B RB RY

R

54 31 58L 58R

19

PTO hydraulic clutch switch

17

30

2

0.5 0.5 0.5 0.5 0.5 0.5

Fuse box

Ref. Circuit No. Amperage Functions 1 1 5A PTO 2 5A 3 3 10A Stop lamps 4 Direction indicator & CAB(AC) 4 20A 5 6 5A Engine stop relay 6 5 20A Spare (AC) 7 7 20A Warning flash lamps 8 10 5A Tail lamps (LH) 9 11 5A Tail lamps (RH)

Light switch

OFF 1 2

Turn signal switch

R OFF L

Horn switch

3 0 1

OFF ON

2 Combinatioun switch

Starter switch

Front small lamp (LH) 12C 5W 0.5 GB

72B: 0.5 GB

72B:

0.5 RB

203B:0.5 LB

203B: 0.5 LB

0.5 B

99D: 0.5 B

99D:

21W 5W

Front turn signal lamp (LH) 12V 21W

40

0.5 GB

0.5 B

99A: 0.5 B 210: 0.85 RW 203: 0.5 LB 72: 0.5 GB

21W

Stop lamp (LH)

10W

Tail lamp (LH)

21W

Rear turn signal lamp (LH)