Hitachi LX70-7 LX80-7 Wheel Loader Workshop+Technical+Operator’s+Operational Principle+Hydraulic & Electrical Circuit+Performance Check Manual
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Hitachi LX70-7 LX80-7 Wheel Loader Workshop+Technical+Operator’s+Operational Principle+Hydraulic & Electrical Circuit+Performance Check Manual
This Manual includes:
- Hitachi LX70-7 LX80-7 Wheel Loader Workshop Manual
- Hitachi LX70-7 LX80-7 Wheel Loader Technical Manual
- Hitachi LX70-7 LX80-7 Wheel Loader Operator’s Manual
- Hitachi LX70-7 LX80-7 Wheel Loader Operational Principle Manual
- Hitachi LX70-7 LX80-7 Wheel Loader Hydraulic Circuit Diagram
- Hitachi LX70-7 LX80-7 Wheel Loader Electrical Circuit Diagram
- Hitachi LX70-7 LX80-7 Performance Check Training Text Manual
- Hitachi LX70-7 LX80-7 Operation Training Text Manual
- Hitachi LX70-7 LX80-7 Maintenance Training Text Manual
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SCREENSHOTS OF THE MANUAL:
DESCRIPTION:
Hitachi LX70-7 LX80-7 Wheel Loader Workshop+Technical+Operator’s+Operational Principle+Hydraulic & Electrical Circuit+Performance Check Manual
- With our pursuit of technological researches and vast experiences, we have been developing products of superior quality and reliability for complete customer satisfaction. To use the machines safely with its full performance for a long time, proper handling and periodical inspections/maintenance are essential.
- This manual describes mainly disassembly, inspection, assembly and adjustment of the main components and systems of the wheel loaders. For the structure and the principle of operation, refer to the service manual.
- We hope this manual will be your good companion in your servicing jobs. The values and descriptions given in this manual are subject to change owing to change of design or some other reason.
- We offer a wide variety of wheel loaders which have been enthusiastically welcomed by users all over the world. Models LX70-7 and LX80-7, articulated type wheel loaders, are the latest products developed from years of research and experience.
- To get the most of the loader, it is required that you become familiar with its features, construction, operating and maintenance procedures.
- This Service Manual explains the structure of the above loaders for service personnel and shop workers. We hope it will be your reference guide during servicing jobs. The descriptions and specifications described in this manual are subject to change without notice.
TABLE OF CONENTS:
Hitachi LX70-7 LX80-7 Wheel Loader Workshop Manual
COVER…………………………………………………………………………… 1
IMPORTANT SAFETY NOTICE…………………………………………………………… 3
FOREWORD………………………………………………………………………… 5
0. GENERAL DESCRIPTION……………………………………………………………. 7
01. SAFETY PRECAUTIONS………………………………………………………… 9
02. FUNDAMENTAL KNOWLEDGE OF MAINTENANCE………………………………………… 12
03. CLEANING…………………………………………………………………. 15
04. STANDARD BOLT TIGHTENING TORQUE…………………………………………….. 16
05. LUBRICATION………………………………………………………………. 22
06. SAFETY PARTS TO BE REPLACED PERIODICALLY…………………………………….. 25
1. POWER TRAIN…………………………………………………………………… 27
11. DISASSMBLY AND REASSEMBLY OF HST PUM………………………………………… 29
11.1 DISASSEMBLY OF HST PUMP ………………………………………………. 31
11.2 REASSEMBLY OF HST PUMP………………………………………………… 33
11.3 DISASSMBLY AND REASSEMBLY OF COMBINATION VALVE 1…………………………. 35
11.4 DISASSMBLY AND REASSEMBLY OF COMBINATION VALVE 2…………………………. 38
11.5 STANDARD VALUES FOR MAINTENANCE………………………………………… 40
12. DISASSEBLY AND REASSEMBLY OF TRANSMISSION……………………………………. 41
12.1 DISASSMBLY OF TRANSMISSION…………………………………………….. 41
12.1.1 PREPARATION…………………………………………………….. 41
12.1.2 DISASSEMBLY OF TRANSMISSION CASE………………………………….. 41
12.1.3 DISASSEMBLY OF CLUTCH ASSEMBLY……………………………………. 46
12.1.4 DISASSEMBLY OF CONTROL VALVE……………………………………… 49
12.1.5 DISASSEMBLY OF OUTPUT SHAFT………………………………………. 49
12.2 REASSEMBLY OF TRANSMISSION……………………………………………. 51
12.2.1 REASSEMBLY OF OUTPUT SHAFT……………………………………….. 51
12.2.2 REASSEMBLY OF CONTROL VALVE………………………………………. 52
12.2.3 REASSEMBLY OF CLUTCH ASSEMBLY…………………………………….. 54
12.2.4 REASSEMBLY OF TRANSMISSION CASE…………………………………… 58
12.3 STANDARD VALUES FOR MAINTENANCE………………………………………… 64
13. DESASSEMBLY AND REASSEMBLY OF DRIVE AXLE…………………………………….. 69
13.1 DISASSEMBLY………………………………………………………….. 69
13.2 REASSEMBLY…………………………………………………………… 79
13.3 TROUBLESHOOTING………………………………………………………. 96
13.4 STANDARD VALUES FOR MAINTENANCE………………………………………… 98
13.5 TIGHTENING TORQUE VALUES FOR MAIN BOLTS…………………………………. 99
2. BRAKE SYSTEM…………………………………………………………………..101
21. DISASSEMBLY AND REASSEMBLY OF BRAKE VALVE…………………………………….103
21.1 DISASSEMBLY…………………………………………………………..104
21.2 REASSEMBLY……………………………………………………………105
3. STEERING SYSTEM………………………………………………………………..107
31. DISASSEMBLY AND REASSEMBLY OF ORBITROL……………………………………….109
31.1 DISASSEMBLY…………………………………………………………..110
31.2 REASSEMBLY……………………………………………………………113
32. DISASSEMBLY ADN REASSEMBLY OF STEERING CYLINDER……………………………….117
32.1 DISASSEMBLY…………………………………………………………..118
32.2 INSPECTION……………………………………………………………119
32.3 REASSEMBLY……………………………………………………………120
33. DISASSEMBLY AND REASSEMBLY OF PRIORITY VALVE………………………………….123
33.1 DISASSEMBLY…………………………………………………………..124
33.2 REASSEMBLY……………………………………………………………124
4. HYDRAULIC SYSTEM……………………………………………………………….125
41. DISASSEMBLY AND REASSEMBLY OF MAIN PUMP………………………………………127
42. DISASSEMBLY AND REASSEMBLY OF MAIN VALVE……………………………………..130
42.1 DISASSEMBLY…………………………………………………………..131
42.2 TREATMENT AFTER DISASSEMBLY…………………………………………….132
42.3 REASSEMBLY……………………………………………………………133
42.4 ADJUSTMENT OF RELIEF VALVE……………………………………………..135
43A. DISASSEMBLY AND REASSEMBLY FO BOOM CYLINDER AND BUCKET CYLINDER (L12-3, LX70-7)….136
43A.1 DISASSEMBLY………………………………………………………….137
43A.2 INSPECTION…………………………………………………………..138
43A.3 REASEMBLY……………………………………………………………139
43B. DISASSEMBLY AND REASSEMBLY OF BUCKET CYLINDER (L16-3, LX80-7)………………….142
43B.1 DISASSEMBLY………………………………………………………….143
43B.2 INSPECTION…………………………………………………………..144
43B.3 REASSEMBLY…………………………………………………………..145
44. DISASSEMBLY AND REASSEMBLY OF TRAVEL DAMPER VALVE FOR APS (OPTION)………………148
44.1 DISASSEMBLY…………………………………………………………..149
44.2 TREATMENT AFTER DISASSEMBLY…………………………………………….151
44.3 REASSEMBLY……………………………………………………………151
44.4 ADJUSTMENT OF PRESSURE REDUCING VALVE SET PRESSURE………………………..153
44.5 MAINTENACE PROCEDURE OF SOLENOID VALVE…………………………………..154
5. ELECTRIC UNIT………………………………………………………………….157
51. ELECTRICAL EQUIPMENT LAYOUT DRAWING………………………………………….159
52. WIRE HARNESS (REFERENCE)……………………………………………………166
53. STARTING SYSTEM ELECTRIC CIRCUIT…………………………………………….177
54. ELECTRIC CIRCUIT DIAGRAM……………………………………………………179
6. ENGINE AND ACCESSORY……………………………………………………………183
GENERAL INFORMATION……………………………………………………………187
MAINTENANCE…………………………………………………………………..213
ENGINE ASSEMBLY 1……………………………………………………………..233
ENGINE ASSEMBLY 2……………………………………………………………..249
ENGINE ASSEMBLY 3……………………………………………………………..279
LUBRICATING SYSTEM…………………………………………………………….309
FUEL SYSTEM…………………………………………………………………..319
TURBOCHARGER………………………………………………………………….329
AIR COMPRESSOR………………………………………………………………..333
ENGINE ELECTRICALS…………………………………………………………….341
TROUBLESHOOTING……………………………………………………………….349
SPECIAL TOOL LIST……………………………………………………………..373
REPAIR STANDARDS………………………………………………………………377
CONVERSION TALBE………………………………………………………………397
REVISION REQUEST FORM……………………………………………………………..407
Hitachi LX70-7 LX80-7 Wheel Loader Technical Manual
INDEX(LX70-7_80-7)……………………………………………………………….. 1
FOREWORD………………………………………………………………………… 3
TABLE OF CONTENTS………………………………………………………………… 5
0. SPECIFICATIONS………………………………………………………………… 9
0.1 OUTER VIEWS………………………………………………………………. 9
0.2 SPECIFICATIONS……………………………………………………………. 12
1. ENGINE AND RELATED COMPONENTS…………………………………………………… 15
1.1 ENGINE…………………………………………………………………… 15
1.2 LUBRICATING SYSTEM………………………………………………………… 19
1.3 COOLING SYSTEM……………………………………………………………. 20
1.4 FUEL SYSTEM………………………………………………………………. 22
1.5 INTAKE AND EXHAUST SYSTEM………………………………………………….. 24
1.6 ELECTRICAL SYSTEM…………………………………………………………. 26
1.7 ENGINE CONTROL UNIT……………………………………………………….. 28
2. POWER TRAIN…………………………………………………………………… 31
2.1 HST UNIT…………………………………………………………………. 33
2.1.1 HYDRAULIC DRIVE……………………………………………………… 33
2.1.2 HST AND HST CHARGE CIRCUIT……………………………………………. 36
2.1.3 HST CONTROL…………………………………………………………. 39
2.2 HST PUMP…………………………………………………………………. 41
2.2.1 GENERAL DESCRIPTION………………………………………………….. 42
2.2.2 PUMP CONTROL………………………………………………………… 48
2.2.3 FNR SOLENOID VALVE…………………………………………………… 57
2.3 HST MOTOR………………………………………………………………… 59
2.3.1 GENERAL DESCRIPTION………………………………………………….. 60
2.3.2 REGULA REGULATOR…………………………………………………….. 65
2.3.3 DIRECTION CONTROL SOLENOID VALVE………………………………………. 67
2.3.4 FLUSH AND BOOST VALVES……………………………………………….. 67
2.3.5 MOTOR TIL-ROLLING SPEED CONTROL VALVE …………………………………. 69
2.4 TRANSMISSION……………………………………………………………… 70
2.4.1 CLUTCH SHAFT………………………………………………………… 74
2.4.2 TRANSMISSION CONTROL VALVE……………………………………………. 76
2.4.3 TRANSMISSION CIRCUIT…………………………………………………. 77
2.4.4 QUICK SHIFT SWITCH (QSS)……………………………………………… 81
2.5 PROPELLER SHAFT…………………………………………………………… 83
2.6 DRIVE AXLES (FRONT AND REAR)……………………………………………….. 85
2.6.1 AXLE……………………………………………………………….. 85
2.6.2 DIFFERENTIAL………………………………………………………… 89
2.6.3 FINAL REDUCTION GEAR…………………………………………………. 91
2.7 WHEEL ASSEMBLY (TIRE AND WHEEL)…………………………………………….. 93
2.7.1 TIRE……………………………………………………………….. 93
2.7.2 WHEEL………………………………………………………………. 93
3. BRAKE SYSTEM………………………………………………………………….. 95
3.1 SERVICE BRAKE…………………………………………………………….. 96
3.1.1 GENERAL DESCRIPTION (BRAKE LINE)………………………………………. 96
3.1.2 BRAKE VALVE………………………………………………………….101
3.1.3 DISK BRAKE…………………………………………………………..105
3.1.4 BRAKE OIL TANK……………………………………………………….106
3.2 P PARKING BRAKE……………………………………………………………107
3.2.1 GENERAL DESCRIPTION (BRAKE LINE)……………………………………….108
3.2.2 PARKING BRAKE ELECTRIC CIRCUIT………………………………………..110
3.2.3 PARKING BRAKE SOLENOID VALVE…………………………………………..113
3.2.4 DISK BRAKE…………………………………………………………..114
4. STEERING SYSTEM………………………………………………………………..115
4.1 GENERAL DESCRIPTION………………………………………………………..115
4.2 OIL CIRCULA CIRCULATION ROUTES………………………………………………117
4.3 STEERING WHEEL UNIT………………………………………………………..118
4.4 STEERING VALVE (ORBITROL)…………………………………………………..119
4.5 PRIORITY VALVE…………………………………………………………….124
4.6 STEERING CYLINDER………………………………………………………….129
5. FRAME AND COCKPIT………………………………………………………………131
5.1 FRAME…………………………………………………………………….131
5.2 CENTER HINGE PIN…………………………………………………………..134
6. HYDRAULIC SYSTEM……………………………………………………………….137
6.1 OIL CIRCULATION ROUTES……………………………………………………..137
6.2 PUMP……………………………………………………………………..141
6.3 CONTROL VALVE……………………………………………………………..145
6.3.1 GENERAL DESCRIPTION…………………………………………………..145
6.3.2 OPERATION……………………………………………………………148
6.3.3 RELIEF VALVE…………………………………………………………152
6.4 VALVE CONTROLS…………………………………………………………….155
6.5 OIL TANK………………………………………………………………….157
7. LOAD HANDLING SYSTEM……………………………………………………………159
7.1 BOOM, BELLCRANK, AND BUCKET…………………………………………………160
7.1.1 GENERAL DESCRIPTION…………………………………………………..160
7.1.2 BUCKET………………………………………………………………163
7.1.3 BUCKET LEVELER……………………………………………………….164
7.1.4 BOOM KICKOUT (OPTION)…………………………………………………165
7.2 CYLINDERS…………………………………………………………………166
7.2.1 BOOM CYLINDER………………………………………………………..166
7.2.2 BUCKET CYLINDER………………………………………………………166
7.3 ANTI-PITCHING SYSTEM (APS) [OPTION]………………………………………….171
8. ELECTRIC SYSTEM………………………………………………………………..177
8.1 LIGHTING UNIT……………………………………………………………..177
8.2 METERS AND SWITCHES………………………………………………………..178
8.2.1 OPERA OPERATING TING ST STATUS TUS MONIT MONITORS ORS (CLUSTER METER UNIT)….178
8.2.2 LIGHTING SWITCH AND TURN SIGNAL SWITCH………………………………….180
8.3 LOCATION OF RELAYS…………………………………………………………181
8.4 ELECTRIC CIRCUIT DIAGRAM……………………………………………………182
SERVICE MANUAL REVISION REQUEST FORM………………………………………………..183
Hitachi LX70-7 LX80-7 Wheel Loader Operator’s Manual
COVER……………………………………………………….. 1
FOREWORD…………………………………………………….. 3
CONTENTS…………………………………………………….. 5
SAFETY INSTRUCTIONS…………………………………………… 7
DECALS (MACHINE SIGNS)………………………………………… 12
QUALIFIED OPERATOR AND REGULATIONS……………………………… 16
SAFETY COMPONENTS…………………………………………….. 17
OPERATION……………………………………………………. 19
PICTORIAL NOMENCLATURE…………………………………….. 20
INSTRUMENTS AND CONTROLS…………………………………… 22
HANDLING CAB, HEATER, AIR CONDITIONER, AND RADIO……………… 39
TRAVELING……………………………………………………. 47
SAFE TRAVELING……………………………………………. 48
BREAK-IN PERIOD…………………………………………… 53
BEFORE STARTING THE ENGINE…………………………………. 54
STARTING THE ENGINE……………………………………….. 55
AFTER STARTING THE ENGINE………………………………….. 55
STARTING AND STOPPING THE LOADER……………………………. 56
TRANSPORTING THE LOADER……………………………………. 58
TOWING…………………………………………………… 60
MEASURES TO BE TAKEN IN AN EMERGENCY………………………… 61
HANDLING IN COLD WEATHER…………………………………… 64
HANDLING TIRES……………………………………………. 65
HANDLING ONE-TOUCH COUPLER (NON-HYDRAULIC AND HYDRAULIC TYPES)…. 68
LOADING OPERATION…………………………………………….. 73
SAFE LOADING OPERATION…………………………………….. 74
BEFORE LOADING……………………………………………. 79
DIGGING………………………………………………….. 80
GROUND DIGGING (DIGGING ON A LEVEL SURFACE)………………….. 81
DUMPING………………………………………………….. 82
LEVELING…………………………………………………. 83
BULLDOZING……………………………………………….. 84
SNOW REMOVAL……………………………………………… 84
HOISTING THE LOADER……………………………………….. 84
ADJUSTING BUCKET AUTOLEVELER……………………………….. 85
STORING THE LOADER……………………………………………. 87
DAILY STORING…………………………………………….. 88
LONG-TERM STORAGE…………………………………………. 88
OPERATING THE LOADER AFTER LONG-TERM STORAGE…………………. 89
MAINTENANCE………………………………………………….. 91
SAFE SERVICING AND MAINTENANCE……………………………… 92
LOCATIONS OF FILLER PORTS………………………………….. 96
GREASE FITTING LOCATIONS…………………………………… 97
ENGINE COMPARTMENT………………………………………… 98
PERIODIC INSPECTION…………………………………………… 99
PERIODIC INSPECTION LIST……………………………………100
BEFORE STARTING (EVERY DAY) CHECKS…………………………..102
50 HRS. CHECKS…………………………………………….111
100 HRS. CHECKS……………………………………………114
250 HRS. CHECKS……………………………………………115
500 HRS. CHECKS……………………………………………119
1000 HRS. CHECKS…………………………………………..122
2000 HRS. CHECKS…………………………………………..125
400 HRS. CHECKS……………………………………………127
MAINTENANCE OF AIR CONDITIONER………………………………128
MAINTENANCE OF BATTERY……………………………………..131
MAINTENANCE OF COOLANT……………………………………..133
MAINTENANCE OF TIRES AND WHEELS……………………………..134
PERIODICAL REPLACEMENT OF SAFETY PARTS……………………….135
LIST OF LUBRICANTS…………………………………………136
OIL CAPACITY………………………………………………137
TROUBLESHOOTING GUIDE………………………………………138
INFORMATION…………………………………………………..141
SPECIFICATIONS…………………………………………….142
NAME PLATE & SERIAL NUMBER………………………………….144
ENGINE SERIAL NUMBER……………………………………….144
WRITE DOWN YOUR LOADER DATA HERE…………………………….145
ISUZU ENGINE WARRANTY STATEMENT……………………………..146
MAINTENANCE LOG……………………………………………152
NOTES…………………………………………………….156
Hitachi LX70-7 LX80-7 Wheel Loader Operational Principle Manual
RETURN…………………………………………………… 0
Operational Principle……………………………………… 1
FOREWORD…………………………………………………. 2
CONTENTS…………………………………………………. 4
0. SPECIFICATIONS…………………………………………. 8
0.1 Outer Views ……………………………………… 8
0.2 Specifications …………………………………… 10
1. ENGINE AND RELATED COMPONENTS……………………………. 12
1.1 Engine ………………………………………….. 12
1.2 Lubricating System ……………………………….. 16
1.3 Cooling System …………………………………… 17
1.4 Fuel System ……………………………………… 19
1.5 Intake and Exhaust System …………………………. 21
1.6 Electrical System ………………………………… 23
1.7 Engine Control Unit ………………………………. 25
2. POWER TRAIN……………………………………………. 28
2.1 HST Unit ………………………………………… 30
2.1.1 Hydraulic Drive …………………………….. 30
2.1.2 HST and HST Charge Circuit …………………… 33
2.1.3 HST Control ………………………………… 36
2.2 HST Pump ………………………………………… 38
2.2.1 General Description …………………………. 39
2.2.2 Pump Control ……………………………….. 45
2.2.3 Neutrol Damp Solenoid Valve ………………….. 58
2.2.4 FNR Solenoid Valve ………………………….. 59
2.3 HST Motor ……………………………………….. 61
2.3.1 General Description …………………………. 62
2.3.2 Regulator ………………………………….. 66
2.3.3 Motor Combination Valve ……………………… 68
2.3.4 Motor Tilt-Rolling Seed Control Valve …………. 70
2.3.5 Stock-Pile & Snow (S&S) Mode (Option for LX80-7)…. 71
2.4 Transmission …………………………………….. 73
2.4.1 Clutch Shaft ……………………………….. 77
2.4.2 Transmission Control Valve …………………… 79
2.4.3 Transmission Circuit ………………………… 80
2.4.4 Quick Shift Switch (QSS) (Option) …………….. 84
2.5 Propeller Shaft ………………………………….. 86
2.6 Drive Axles (Front and Rear) ………………………. 88
2.6.1 Axle ………………………………………. 88
2.6.2 Differential ……………………………….. 92
2.6.3 Final Reduction Gear ………………………… 94
2.7 Wheel Assembly (Tire and Wheel) ……………………. 96
2.7.1 Tire ………………………………………. 96
2.7.2 Wheel ……………………………………… 96
3. BRAKE SYSTEM…………………………………………… 98
3.1 Service Brake ……………………………………. 99
3.1.1 General Description (Brake Line) ……………… 99
3.1.2 Brake Valve …………………………………104
3.1.3 Disk Brake ………………………………….108
3.1.4 Brake Oil Tank ………………………………109
3.2 Parking Brake …………………………………….110
3.2.1 General Description (Brake Line) ………………111
3.2.2 Parking Brake Electric Circuit ………………..114
3.2.3 Parking Brake ……………………………….117
3.2.4 Adjusting Parking Brake ………………………118
4. STEERING SYSTEM…………………………………………120
4.1 General Description ……………………………….120
4.2 Oil Circulation Routes …………………………….122
4.3 Steering Wheel Unit ……………………………….123
4.4 Steering Valve (Orbitrol) ………………………….124
4.5 Priority Valve ……………………………………129
4.6 Cushion Valve (LX80-7 only) ………………………..134
4.7 Steering Cylinder ………………………………..136
5. FRAME AND COCKPIT……………………………………….138
5.1 Frame ……………………………………………138
5.2 Center Hinge Pin ………………………………….140
6. HYDRAULIC SYSTEM………………………………………..144
6.1 Oil Circulation Routes …………………………….144
6.2 Pump …………………………………………….146
6.3 Control Valve …………………………………….150
6.3.1 General Description ………………………….150
6.3.2 Operation …………………………………..153
6.3.3 Relief Valve ………………………………..157
6.4 Valve Controls……………………………………..160
6.5 Oil Tank …………………………………………162
7. LOAD HANDLING SYSTEM…………………………………….164
7.1 Boom, Bellcrank, and Bucket ………………………..165
7.1.1 General Description ………………………….165
7.1.2 Bucket ……………………………………..168
7.1.3 Bucket Leveler ………………………………169
7.1.4 Boom Kickout (Option) ………………………..170
7.2 Cylinders ………………………………………..171
7.2.1 Boom Cylinders ………………………………171
7.2.2 Bucket Cylinder ……………………………..171
8. ELECTRIC SYSTEM…………………………………………176
8.1 Lighting Unit …………………………………….176
8.2 Meters and Switches ……………………………….177
8.2.1 Operating Status Monitors (Cluster Meter Unit) ….177
8.2.2 Lighting Switch and Turn Signal Switch …………179
8.3 Location of Relays ………………………………..180
8.4 Electric Circuit Diagram …………………………..181
SERVICE MANUAL REVISION REQUEST FORM…………………………182
THE ATTACHED DIAGRAM LIST…………………………………..183
Hitachi LX70-7 LX80-7 Performance Check Training Text Manual
Return…………………………………………………………………………………… 0
Performance Check…………………………………………………………………………. 1
FOREWORD…………………………………………………………………………………. 2
TABLE OF CONTENTS…………………………………………………………………………. 4
1. STANDARD SERVICE DATA TABLE……………………………………………………………… 6
1.1 CHECK ITEMS AND STANDARD VALUES……………………………………………………… 8
1.2 STANDARD VALUES FOR HYDRAULIC PUMP AND VALVES………………………………………….10
1.2.1 PUMP…………………………………………………………………………10
1.2.2 CONTROL VALVES………………………………………………………………..10
1.2.3 STEERING (ORBITROL, PRIORITY VALVE) …………………………………………….10
2. INSPECTION PROCEDURE…………………………………………………………………….12
2.1 ITEMS TO BE INSPECTED AND INSPECTION PROCEDURE………………………………………..12
2.1.1 ENGINE RPM……………………………………………………………………12
2.1.2 VALVE CLEARANCE……………………………………………………………….14
2.1.3 COMPRESSION…………………………………………………………………..15
2.1.4 FUEL INJECTION START PRESSURE AND SPRAY PATTERN…………………………………..16
2.1.5 ENGINE LUBE OIL PRESSURE……………………………………………………….17
2.1.6 BATTERY ELECTROLYTE SPECIFIC GRAVITY…………………………………………….17
2.1.7 FAN BELT DEFLECTION……………………………………………………………18
2.1.8 RADIATOR CAP OPENING PRESSURE…………………………………………………..19
2.1.9 HST MAIN PRESSURE……………………………………………………………..20
2.1.10 NEUTRAL CHARGE RELIEF PRESSURE…………………………………………………22
2.1.11 PUMP TILT-ROLLING CONTROL PRESSURE……………………………………………..23
2.1.12 MOTOR TILT-ROLLING SELECTION PRESSURE AND MOTOR SERVO PISTON LARGE CHAMBER PRESSURE….25
2.1.13 HI-Lo TRANSMISSION CLUTCH PRESSURE……………………………………………..27
2.1.14 TIRE INFLATION PRESSURE……………………………………………………….28
2.1.15 STEERING WHEEL PLAY…………………………………………………………..30
2.1.16 POWER STEERING RELIEF PRESSURE…………………………………………………31
2.1.17 CENTER HINGE PIN LOOSENESS…………………………………………………….32
2.1.18 BRAKE PEDAL PLAY……………………………………………………………..32
2.1.19 BRAKE OIL PRESSURE……………………………………………………………33
2.1.20 SERVICE BRAKE (LOCATION WHEEL BRAKE DISK IS MEASURED FOR WEAR)…………………….34
2.1.21 CONTROL VALVE RELIEF PRESSURE………………………………………………….35
2.1.22 LOAD HANDLING SYSTEM(BOOM AND BUCKET OPERATION, NATURAL DROP)……………………..36
2.1.23 BBUCKET STOPPER AND BELLCRANK STOPPER CLEARANCE………………………………….38
2.1.24 TRAVELING SPEED………………………………………………………………40
2.1.25 SERVICE BRAKE PERFORMANCE……………………………………………………..41
2.1.26 PARKKING BRAKE PERFORMANCE…………………………………………………….42
2.1.27 LEVER OPERATING FORCE…………………………………………………………43
2.1.28 LEVER STROKE…………………………………………………………………44
3. TROUBLESHOOTING GUIDE……………………………………………………………………46
Hitachi LX70-7 LX80-7 Operation Training Text Manual
RETURN………………………………………………………. 0
Operation……………………………………………………. 1
FOREWORD…………………………………………………….. 2
CONTENTS…………………………………………………….. 3
SAFETY INSTRUCTIONS…………………………………………… 4
DECALS (MACHINE SIGNS)………………………………………… 9
QUALIFIED OPERATOR AND REGULATIONS………………………………13
SAFETY COMPONENTS……………………………………………..14
OPERATION…………………………………………………….16
PICTORIAL NOMENCLATURE……………………………………..17
INSTRUMENTS AND CONTROLS……………………………………19
CAB, HEATER, AIR CONDITIONER, AND RADIO………………………35
TRAVELING…………………………………………………….42
SAFE TRAVELING…………………………………………….43
BREAK-IN PERIOD……………………………………………48
BEFORE STARTING THE ENGINE………………………………….49
STARTING THE ENGINE………………………………………..50
AFTER STARTING THE ENGINE…………………………………..50
STARTING AND STOPPING THE LOADER…………………………….51
TRANSPORTING THE LOADER…………………………………….53
TOWING……………………………………………………55
MEASURES TO BE TAKEN IN AN EMERGENCY…………………………56
HANDLING IN COLD WEATHER……………………………………59
HANDLING TIRES…………………………………………….60
HANDLING ONE-TOUCH COUPLER (NON-HYDRAULIC AND HYDRAULIC TYPES)….63
LOADING OPERATION……………………………………………..68
SAFE LOADING OPERATION……………………………………..69
BEFORE LOADING…………………………………………….74
DIGGING…………………………………………………..75
GROUND DIGGING (DIGGING ON A LEVEL SURFACE) ………………….76
DUMPING…………………………………………………..77
LEVELING………………………………………………….78
BULLDOZING………………………………………………..79
SNOW REMOVAL………………………………………………79
HOISTING THE LOADER………………………………………..79
ADJUSTING BUCKET AUTO-LEVELLER………………………………80
STORING THE LOADER…………………………………………….82
DAILY STORING……………………………………………..83
LONG-TERM STORAGE………………………………………….83
OPERATING THE LOADER AFTER LONG-TERM STORAGE………………….84
Hitachi LX70-7 LX80-7 Maintenance Training Text Manual
RETURN…………………………………. 0
Maintenance…………………………….. 1
PERIODIC INSPECTION………………………10
PERIODIC INSPECTION LIST………………11
BEFORE STARTING (EVERY DAY) CHECKS……..13
50 HOURS CHECKS………………………23
100 HOURS CHECKS……………………..25
250 HOURS CHECKS……………………..26
500 HOURS CHECKS……………………..30
1000 HOURS CHECKS…………………….33
2000 HOURS CHECKS…………………….36
4000 HOURS CHECKS…………………….38
MAINTENANCE OF AIR CONDITIONER…………39
MAINTENANCE OF BATTERY………………..42
MAINTENANCE OF COOLANT………………..44
MAINTENANCE OF TIRES AND WHEELS………..45
PERIODICAL REPLACEMENT OF SAFETY PARTS….46
LIST OF LUBRICANTS……………………47
OIL CAPACITY…………………………48
TROUBLESHOOTING GUIDE…………………49
INFORMATION……………………………..52
SPECIFICATIONS……………………….53
NAME PLATE & SERIAL NUMBER…………….55
ENGINE SERIAL NUMBER………………….55
WRITE DOWN YOUR LOADER DATA HERE……….56
PLEASE NOTE:
⦁ This is the SAME exact manual used by your dealers to fix your vehicle.
⦁ The same can be yours in the next 2-3 mins as you will be directed to the download page immediately after paying for the manual.
⦁ Any queries / doubts regarding your purchase, please feel free to contact [email protected]
Collin Jayceon –