Jlg G6-42A Service Manual Manuel d'utilisateur Page 117
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- Table des matières
- DEPANNAGE
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
7-5
G6-42A, G9-43A, G10-43A
Engine
7.2 ENGINE COOLING SYSTEM
7.2.1 Surge Tank Cap
A 17.4 psi (1,2 Bar) cap is used on the surge tank. An
incorrect or malfunctioning cap can result in the loss of
coolant and a hot-running engine.
7.2.2 Thermostat Replacement
Before considering thermostat replacement, check the
coolant level, fan belt tension and instrument cluster
temperature indicator.
• If engine seems to take a long time to warm up,
thermostat may be stuck in open position and
requires replacement.
• If engine runs hot, check temperature of upper
radiator hose.
• If hose is not hot, thermostat may be stuck in
closed position.
• If engine has overheated, performance may
suffer, indicating other damage including a
leaking cylinder head gasket, cracked
cylinder head or block, and/or other internal
engine damage.
a. Thermostat Removal
1. Park machine on a firm, level surface, level machine,
fully retract boom, lower boom, place transmission
control lever in (N) NEUTRAL position, engage
parking brake, and shut engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and steering wheel.
3. Open engine cover. Allow system fluids to cool.
4. Properly disconnect the battery
5. Slowly turn surge tank cap to allow any pressure to
escape. Remove surge tank cap.
6. Place a funnel at the base of the radiator to channel
drained coolant into container. Loosen draincock
and slowly remove to allow the coolant to drain.
Transfer coolant into a properly labeled container.
Dispose of properly if coolant needs to be replaced.
Replace radiator draincock.
7. Loosen and remove the top radiator hose from the
thermostat housing.
8. Disconnect the engine water temperature sender (1)
if connected to the thermostat housing.
9. Remove the two capscrews (2) securing the
thermostat housing (3) to the engine.
10. Remove the thermostat housing, old gasket and
thermostat. Clean all gasket surfaces. DO NOT let
any debris into the thermostat opening.
Note: ALWAYS use the correct thermostat and install a
new gasket. NEVER operate the engine without a
thermostat, or engine damage will result.
b. Thermostat Installation
1. Install engine thermostat, thermostat gasket and
thermostat housing. Secure with two capscrews and
torque as required.
2. Connect the engine water temperature sender if
connected to the thermostat housing.
3. Properly connect the battery.
4. Open surge tank cap, and fill system completely to
full cold level with coolant. Replace and tighten
surge tank cap.
5. Add coolant to overflow bottle until bottle is 1/4 to 1/2
full. This overfilling will compensate for any air
trapped in cooling system.
6. Run engine to operating temperature. Visually check
for leaks with engine running. Check coolant level in
overflow bottle and fill, or drain, as necessary.
7. Close and secure engine cover.
8. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
MY4520
2
1
TYPICAL
THERMOSTAT
2
3
- Service Manual 1
- EFFECTIVITY PAGE 3
- READ THIS FIRST 4
- SECTION CONTENTS 5
- Section Subject Page 6
- Section 1 9
- Safety Practices 9
- 1.1 INTRODUCTION 10
- 1.2 DISCLAIMER 10
- 1.4 DO NOT OPERATE TAGS 10
- 1.5 SAFETY INFORMATION 10
- 1.6 SAFETY INSTRUCTIONS 11
- 1.7 SAFETY DECALS 12
- Section 2 13
- 2.1 REPLACEMENT PARTS AND 14
- WARRANTY INFORMATION 14
- 2.2 THREAD LOCKING COMPOUND 14
- 2.3 TORQUE CHARTS 15
- SOCKET HEAD CAP SCREWS 19
- 2.4 SPECIFICATIONS 26
- 2.4.4 Engine Specifications 28
- 2.4.5 Tires 29
- 2.5.3 Capacities 32
- LB/FT (Nm) 33
- 2.7 LUBRICATION SCHEDULE 36
- 2.7.2 250 Hour 37
- 2.7.3 1000 Hour 38
- Section 3 39
- 3.1 BOOM SYSTEM 41
- 3.2 BOOM SYSTEM—THREE SECTION 42
- 3.4 COMPLETE BOOM REMOVAL/ 43
- INSTALLATION 43
- 3.5 BOOM SECTION 44
- REMOVAL/INSTALLATION 44
- 3.5.6 Second and Third Boom 51
- Section Installation 51
- 3.6 EXTEND/RETRACT CHAIN 53
- 3.7 PUSH BEAM—EXTEND/RETRACT 54
- CYLINDER REMOVAL/ 54
- Remove strong back 56
- 3.8 BOOM ADJUSTMENTS 58
- G9-43A/G10-43A 61
- 3.9 QUICK SWITCH ASSEMBLY 63
- 3.10 BOOM WEAR PADS 64
- Lubrication: 65
- 3.11 BOOM EXTEND AND 66
- RETRACT CHAINS 66
- 3.11.3 Inspection Guidelines 67
- 3.11.4 Chain Lubrication 68
- 3.12 FORKS 69
- 3.13 EMERGENCY BOOM LOWERING 69
- PROCEDURE 69
- 3.14 TROUBLESHOOTING 72
- Section 4 77
- Cab and Covers 77
- 4.1 OPERATOR CAB AND COVERS 78
- 4.2 OPERATOR CAB 80
- 4.3 CAB COMPONENTS 80
- 4.3.2 Service Brake Pedal 81
- 4.3.3 Accelerator Pedal 82
- Accelerator Pedal Removal 82
- 4.3.4 Boom Joystick Assembly 83
- Outrigger Joysticks 83
- (if equipped) 84
- 4.4 CAB REMOVAL 86
- 4.5 CAB INSTALLATION 87
- Section 5 89
- 5.2 AXLE SERIAL NUMBER 92
- 5.3 AXLE SPECIFICATIONS AND 92
- MAINTENANCE INFORMATION 92
- 5.4 AXLE REPLACEMENT 92
- 5.5 DRIVE SHAFTS 97
- 5.6 WHEELS AND TIRES 98
- 5.7 BRAKES 99
- 5.8 TOWING A DISABLED MACHINE 100
- Section 6 101
- Transmission 101
- COMPONENT TERMINOLOGY 102
- 6.1 TRANSMISSION ASSEMBLY 102
- AND MAINTENANCE INFORMATION 103
- 6.4 TRANSMISSION REPLACEMENT 103
- Internal Repair 105
- BY-PASS VALVE 107
- 6.6.2 Torque Convertor 108
- Diaphragm Installation 108
- 6.7 TROUBLESHOOTING 109
- Problem Cause Remedy 109
- Section 7 113
- 7.1 INTRODUCTION—CUMMINS 114
- G6-42A, G9-43A, G10-43A 115
- 7.2 ENGINE COOLING SYSTEM 117
- 7.3 ENGINE ELECTRICAL SYSTEM 120
- 7.4 FUEL SYSTEM 120
- 7.4.2 Fuel Tank 121
- 7.5 ENGINE EXHAUST SYSTEM 123
- 7.6 AIR CLEANER ASSEMBLY 125
- 7.7 ENGINE REPLACEMENT 127
- 7.7.2 Engine Installation 128
- Section 8 129
- Hydraulic System 129
- 8.1 HYDRAULIC COMPONENT 130
- TERMINOLOGY 130
- 8.2 SAFETY INFORMATION 132
- 8.4 HYDRAULIC CIRCUITS 134
- STABILIZER OPTION 139
- AUXILIARY 139
- HYDRAULICS OPTION 139
- 8.4.8 Anti-Stall System 142
- 8.5 HYDRAULIC RESERVOIR 143
- 8.6 IMPLEMENT PUMP 144
- 8.7 CONTROL VALVES 145
- 8.7.2 Service Brake Valve 148
- 8.7.3 Service Brake Bleeding 148
- 8.7.4 Steering Orbitrol Valve 149
- 8.7.5 Steer Select Valve 149
- 8.8 HYDRAULIC CYLINDERS 151
- AFTER the head gland 153
- 8.8.3 Steering Cylinders 153
- Section 9 157
- Electrical System 157
- 9.1 ELECTRICAL COMPONENT 159
- 9.2 SPECIFICATIONS 161
- 9.3 SAFETY INFORMATION 161
- 9.4 FUSES AND RELAYS 161
- SEE ACCESSORY MODULE 164
- 9.5.2 Options Schematic 165
- 9.5.4 Chassis Schematic 167
- PUMP DISPLACEMENT MODULE 168
- 9.6 ENGINE START CIRCUIT 170
- 9.7 CHARGING CIRCUIT 171
- 9.7.2 Alternator—LS 172
- 9.8 WINDOW WIPER/WASHER 173
- WINDSHIELD WIPER MOTOR 173
- Reservoir 174
- 9.9 CAB HEATER AND FAN 175
- 9.10 SOLENOIDS, SENSORS 176
- AND SENDERS 176
- 9.10.5 Fuel Level Sender 178
- 9.11 DISPLAY GAUGE AND 180
- DASH SWITCHES 180
- 9.11.3 Dash Switches 181
- 9.12 HAND HELD ANALYZER 183
- - G9-43A AND G10-43A 183
- MAL0890B 184
- DTC Event Comment Latched 187
- FAULT CODES 194
- JLG Worldwide Locations 206
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