Hitachi Hydraulic Excavator UH122 UH121LC Operation Manual(EM171-1-4) – PDF DOWNLOAD

Description

Hitachi Hydraulic Excavator UH122 UH121LC Operation Manual(EM171-1-4) – PDF DOWNLOAD

FILE DETAILS:

Hitachi Hydraulic Excavator UH122 UH121LC Operation Manual(EM171-1-4) – PDF DOWNLOAD

Language : English
Pages :80
Downloadable : Yes
File Type : PDF
Size:10.6 MB

IMAGES PREVIEW OF THE MANUAL:

DESCRIPTION

Hitachi Hydraulic Excavator UH122 UH121LC Operation Manual(EM171-1-4) – PDF DOWNLOAD

FOREWORD

• This Instruction Manual contajns information on the operation, lubrication and maintenance of the Hitachi Hydraulic Excavator Model UH122.
• It also contains a description of the major units and their functions in relation to other components of the machine. The care you give your Hitachi JH122 Hydraulic Excavator will greately determine the longevity of this machine. How well the unit continues to give satisfactory performance depends upon the manner in which it is operated.
• It is requested that this manual be read through so that the machine is always in top mechanical and hydraulic condition. For the operation, lubrication and maintc,nance of the , are to be ,nade to the Isuzu El20 Diesel Engine Manual.

TABLE OF CONTENTS:

Hitachi Hydraulic Excavator UH122 UH121LC Operation Manual(EM171-1-4) – PDF DOWNLOAD

CONTENTS
SPECIFICATIONS
CONSTRUCTION
21 General 5
2 2 Hydraulic System 6
23 Air System 9
24 Electrical System 11
3 OPERATION • 12
31 Precautions in Handling a New Machine 12
32 Operating Excavator 12
33 Starting the Engine 16
3 4 Stopping the Engine 18
35 Warming-up the Hydraulic System 18
36 Operation in Winter or Cold Time 19
37 Propelling • 20
38 Operating Instruction 22
38l Caution for operation 22
382 Digging ditches (Backhoe operation) 25
383 Shovel operation 25
39 Reversing the Bucket •• 26
310 Towing the Machine • 27
311 Getting On and Off the Machine 27
4 MAIN’l’ENfu\lCE AND AD,JUSTMENT • 2 9
41 Periodic Inspection and Maintenance • 29
411 Daily inspection (Before-operation service) 29
412 Monthly inspection 30
413 Yearly inspection 32
414 Replacement of lubricants and filter
eleinents 34
42 Lubrication Points and Locations of Filters 35
43 Recommended Fuel Oil and Lubricants 37
44 Inspections before Operating Excavator 39
45 Precautions after Operation • 40
46 Inspection and Maintenance •• 40
461 Engine oil 41
462 r=ngine oil filter • 41
463 Centrifugal oil filter 41
464 Fuel filter 41
4 6 5 Air c 1 e an er 4 2
466 Radiator 42
467 Transmission
468 Center joint
469 Air filter
4610 Hydraulic oil 47
4611 Replacing hydraulic oil filter
(Full-flow filter) 50
4 • 6 • 12 Pue l tank 5 2
4613 Air tank
4614 Adjusting track link
4 6 15 Electrical system 54
4616 Lubrication of front-attachment 56
4617 Bucket teeth point replacement 57
4618 Reinstalling bucket pin seal 59
4619 Retightening bolts and nuts
4620 Caution in disassembling and repairs
47 Maintenance Service under Unusual Conditions
48 Precautions in Long Outage
TRANSPORTATION
51 Transportation
52 Dimensions for transport 68
TROUBLESHOOTING GUIDE 70
61 Engine 70
62 Engine Accessories 70
6 3 Control levers 71
6 4 Hydraulic System • 72
65 Propelling 74
66 Swinging
6 7 OTHERS

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