THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF

BOLENS OR IT’S SUCCESSORS. BOLENS AND IT’S SUCCESSORS

ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL.

TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS,

AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.

Service Manual

Servic

e M

an

ual

TX1300(G152)

TX1300F(G154)

TX1500(G172)

TX1500F(G174)

BO-S-TX 1300+

-"."'-_. ~c»-c_ .. . --' - . . , ,

D ESEL TRACTORS TX 1300 (G 1&2) TX130'0 F (G154) TX1500 (G.172). TX1500F(G174)

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. from ISEKI

Tractor

Service and ~l~epair Manual

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. . for t~rf, commercial andagricultural.l?trQ'tes·

FORM553215~1 SUPERSEDE~553215

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CONTENTS

SECTION I NAMES OF MAIN COMPONENTS 5 SECTION II DIMENSIONS AND SPECIFICA-

TIONS . . . . . . . . . . . . . . . . . . . . .. 7 SECTION 1II PERIODIC MAINTENANCE CHART. 9

Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9 Tractor. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10

SECTION IV LUBRICATION................ 11 1. Lubrication chart . . . . . . . . . . . . . . . . . . . .. 11

SECTION V SERVICE DATA ............... 12 1. Service standards ..................... 12 2. Special tools ........................ 12 3. Tightening torque chart. . . . . . . . . . . . . . . .. 22 4. Stud bolt list . . . . . . . . . . . . . . . . . . . . . . .. 23 5. List of parts requiring sealing agent .. . . . . . .. 24

SECTION VI POWER TRAIN DIAGRAM. . . . . . .. 25 SECTION VII CONSTRUCTION AND SERVICE OF THE

ENGINE. . . . . . . . . . . . . . . . 27 1) Sectional view of engine. . . . . . . . . . . . . . . .. 27 2) Engine

(1) Construction of cylinder head ........ " 29 (2) Disassembly, assembly and adjustment of

cylinder head. . . . . . . . . . . . . . . . . . . .. 30 (3) Construction of crankcase ............ 33 (4) Disassembly, assembly and adjustment of

crankcase ....................... 34 3) Lubrication system

(1) Construction of lubrication system ...... 41 4) Fuel system

(1) Construction of fuel system ...... . . . .. 42 (2) Disassembly, assembly and adjustment offuel

system ......................... 45 5) Cooling system

(1) Construction of cooling system. . . . . . . .. 48

2

6) Electrical system

(1) Construction of electrical system. . . . . . .. 48 (2) Disassembly, assembly and adjustment of

electrical system. . . . . . . . . . . . . . . . . .. 50 SECTION VIII DISASSEMBLY OF THE TRACTOR. 53

1. Bonnet and other components in the front section . . . . . . . . . . . . . . . . . . . . . . . . . . .. 53

2. Driver's seat and rear fenders ............. 57 3. Radiator and air cleaner ................ , 61 4. Muffler. . . . . . . . . . . . . . . . . . . . . . . . . . .. 65 5. Fuel tank, battery, throttle lever, tank base and

stop plate . . . . . . . . . . . . . . . . . . . . . . . . .. 66 6. Clutch system ....................... 69 7. Brake system . . . . . . . . . . . . . . . . . . . . . . .. 75 8. Steering system ......... . . . . . . . . . . . .. 79 9. Front axle. . . . . . . . . . . . . . . . . . . . . . . . .. 83

10. Front wheel drive shaft .... . . . . . . . . . . . .. 91 11. Hydraulic system .................... , 95 12. Transmission system. . . . . . . . . . . . . . . . . .. 96

2) ENGINE

(1) Construction of cylinder head

• Cylinder head

The cylinder head is made of cast iron providing high rigidity and a superior cooling effect. The overhead valve layout is used. The intake port and exhaust port are cast as a single unit. To improve combustion efficiency and starting performance, the swirl chamber and glow plug are provided at the left side of the cylinder head.

Sectional View of Cylinder Head 1. Cylinder head 2. Swirl chamber 3. Glow plug 4. Exhaust valve 5. Valve spring 6. Rocker arm 7. Rocker shaft 8. Rocker stay 9. Push rod

10. Rocker cover

• Cylinder head gasket

o For KE70 and KE75 engines The bore section of the gasket has a wire ring with a stainless steel plate grommet. To prevent water and oil leaks, sealing compound is coated around the water passage holes and push rod holes. It is not necessary to coat with sealing compound when reassembling because a patch sheet with

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adhesive agent is provided on the cylinder head side at the push rod holes. On the face of cylinder head side, the mark "KE70" or "KE75" is stamped.

• Valve and valve spring

An intake valve having a larger diameter valve face is employed to increase intake efficiency. The valve and stem are welded. The intake valve is of anti-heat steel. The exhaust valve face is of anti­heat special steel. On top of the valve guide, valve stem seal is applied to prevent lube oil from going down.

The spring, spring retainer and retainer lock are common parts for both the intake and exhaust valves.

Valve stem seal

• Combustion chamber

The swirl type combustion chamber is employed. The swirl chamber is made of anti-heat steel and pressed in to the cylinder head. This swirl chamber cannot be disassembled as it is machined after pressing into place.

• Rocker arm and rocker shaft

The lead bronze bushing is pressed in to this cast rocker arm. Lubrication oil passes through the oil passage provided in the rocker shaft. The rocker

Sectional View of Starter Motor

1. Magnetic switch 7. Yoke 2. Shift lever 8. Ball 3. Front bracket 9. Field coil 4. Overrunning clutch 10. Armature

5. Stop ring 11. Brush 6. Center bracket 12. Rear bracket

Q)

Wiring Diagram

An electromagnet pinion sliding type starter motor is employed. The magnetic switch of this starter motor smooth­ly engages the pinion of the motor with the ring gear. The starter motor mainly consists of: the motor to generate power, the over-running clutch to trans­mit power and to prevent over-running of the motor after the engine is started, and the electro­magnetic switch to engage the pinion with ring gear to flow active current to the motor.

The fixed section consists of the yoke, pole piece, field coil, front bracket, center bracket and rear bracket and magnetic switch. The rotating section consists of the armature and

46

overrunning clutch. The magnetic switch consists of core, plunger, and co n tracto r co il. The plunger is connected with the clutch by a lever.

@ Alternator

Model Name ........................ 021000-2431 Type .................................... Alternating Current Generator Nominal Output .................. 12V-35A Direction of Rotation. Clockwise (seen from pulley side) Weight ................................. Approximately 3.6 kg (7.9 Ibs)

Sectional View of Alternator

1. Stator 6. Brush

2. Rotor 7. Front bracket

3. Ball bearing 8. Ball bearing

4. Rear bracket 9. Pulley

5. Fin complete 10. Diode

Wiring Diagram

The 3-phase alternator with diode rectifier is used on this engine series. It is driven by the crankshaft pulley through the V-belt.

The alternator comprises rotating and fixed sec­tions. The rotating section consists of rotor, ball bearing and pulley with fan and other parts. The fixed section mainly consists of the armature, front bracket, rear bracket, fin complete and brush.

Three (+) diodes and three (-) diodes are fixed to the fin complete (heat sink).

(2) Disassembly. assembly and adjustment of electrical system

(a) Disassembly

• Starter motor

Disconnect the cable from the battery terminals. Disconnect wirings at B terminal and S terminal. Removing mounting bolt, take out the starter motor.

• Regulator • Alternator

Model Name ........................ 026000-1763 Type ..... ............. ............... ... Tirrill type

Polarity······························ (-) grounding Components ........................ Voltage regulator, lamp relay Weight ................................. Approximately 4.5 kg (9.9 Ibs)

Voltage regulator

Wiring Diagram

The voltage regulator consists of the voltage re­gulator and lamp relay. The wiring is gathered at the connector. This regulator controls generating voltage of the alternator regardless the alternator speed. By turning off and on the electrical current to the field coil, the regulator maintains the voltage at a constant level.

By utilizing N terminal voltage on the alternator, the lamp relay goes off the pilot lamp. That is; this lamp is off when the alternator is functioning correctly.

47

Disconnect the cable at the battery. Disconnect electrical wirings at the rear face of the alternator. Remove the alternator brace bolt, and take off the V-belt. Loosen the support bolt to take out the alternator.

(b) Assembly and adjustment

• Starter motor

If the starter motor does not operate when turning on the starter switch, do not assume immediately that the starter motor is defective, though the starter motor may be the problem. The cause of the problem may exist in elsewhere such as in switches or other parts of the engine. Before removing the starter motor, check the start­ing circuit. If there is no trouble in the circuit, remove the motor from the engine to test it.

Starting circuit checks:

Discharged condition of the battery Clamping of battery terminals Clamping of starter motor terminals Wirings (grounding, broken wire, shorts, etc.) Grounding of starter motor Condition of starter switch

No-load test of starter motor:

Connect the starter motor, ammeter, voltmeter and switch as shown in the figure. Put on the switch, and measure the motor speed, voltage and current. If the reading is not as speci-

Adjustment:

With the brake rod, adjust the free play of both brake pedals to an even 30 to 40 mm (1.18 to 1.57 in).

Parking lever

'U'---~=----- Brake pedal (LH and RH) completes

Step complete

Brake shaft complete

5) Hydraulic System

NOTE: Carefully and thoroughly clean all the parts. Never allow foreign materials to enter into the system.

(1) Assembly and adjustment

When installing the lift crank and lift arm on the lift shaft, correctly install them by aligning the reference marks. The difference in height between the left and right lift arms must be less than 6 mm (0.24 in) when both arms are lowered by 8° from level position.

The control valve when mounted must operate lightly

and smoothly.

Apply grease on the mounting face of the control valve. Coat its mounting bolts with Three bond No.4.

Cylinder case Lift crank

Brake rod Brad Brake cam pin

Insert the crank stopper to the contact face of the lift crank with the rear transmission case.

Adjust the hex, bolt on the valve return rod so that the control lever automatically returns to the Neutral posi­tion from the Raise position.

Confirm that the lowering speed of the implement can be adjusted. (The speed decreases when turning the adjusting lever counterclockwise.)

Applying Super Three Cement 1000A on the lever knob, install the control lever knob.

Confirm that there is no damage to the mating faces (O-ring seats) of the suction pipe complete and delivery pipe complete before installation.

After installation, bleed air by using the bleed screw on the control valve. After bleeding, securely tighten the

screw. o

Lift arm

"r-W--;."=*:h-o"'---+--- +_--,-,--=~_=.L".l _ Air bleed screw _cp_-- --] Lift arm mounting position

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