Hitachi LX70-7 LX80-7 Operational Principle Training Text Manual (TTLA-0520-LX) – PDF Download

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Hitachi LX70-7 LX80-7 Operational Principle Training Text Manual (TTLA-0520-LX)

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Hitachi LX70-7 LX80-7 Operational Principle Training Text Manual (TTLA-0520-LX)

• Manual Language:English
• Downloadable:Yes
• Pages: 183
• Size: 4.95 MB
• Format:PDF

HITACHI LX70-7 LX80-7 OPERATIONAL PRINCIPLE TRAINING TEXT MANUAL (TTLA-0520-LX) – PDF DOWNLOAD:

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DESCRIPTION:

Hitachi LX70-7 LX80-7 Operational Principle Training Text Manual (TTLA-0520-LX)

• Our company offers a wide variety of wheel loaders which have been enthusiastically welcomed by users all over the world.
• The 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 CONTENTS:

Hitachi LX70-7 LX80-7 Operational Principle Training Text Manual (TTLA-0520-LX)

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

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