Hitachi Hydraulic Excavator UH121 Operation Manual(EM171-1-5) – PDF DOWNLOAD

Description

Hitachi Hydraulic Excavator UH121 Operation Manual(EM171-1-5) – PDF DOWNLOAD

FILE DETAILS:

Hitachi Hydraulic Excavator UH121 Operation Manual(EM171-1-5) – PDF DOWNLOAD

Language : English
Pages :86
Downloadable : Yes
File Type : PDF
Size:7.81 MB

IMAGES PREVIEW OF THE MANUAL:

DESCRIPTION

Hitachi Hydraulic Excavator UH121 Operation Manual(EM171-1-5) – PDF DOWNLOAD

FOREWORD

• This Instruction Manual contains information on the operation, lubrication and maintenance of the Hitachi Hydraulic Excavator Model UH121.
• 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 UH121 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 maintenance of the engine, references are to be made to the Isuzu El20 Diesel Engine Operator’s Manual.

TABLE OF CONTENTS:

Hitachi Hydraulic Excavator UH121 Operation Manual(EM171-1-5) – PDF DOWNLOAD

CONTENTS
SPECIFICATIONS
CONSTRUCTION
21 General 5
2 2 Hydraulic Sys tern 6
2 3 Air Sys tern 9
2 4 Electrical System 11
3 OPERATION 12
31 Precautions in Handling a New Machine 12
32 Operating Excavator 12
3 3 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
3 7 Propelling 2 0
38 Operating Instruction 22
381 Caution for operation 22
382 Digging ditches (Backhoe operation) 25
383 Shovel operation 25
39 Reversing the Bucket 26
3 10 Towing the Machine 2 7
311 Getting On and Off the Machine 27
4 MAINTENANCE AND ADJUSTMENT 29
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
elements 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 Engine oil filter
463 Centrifugal oil filter 41
464 Fuel filter 41
4 6 5 Air c 1 e an er 4 2
4 6 6 Radiator 4 2
467 Transmission 44
4 6 8 Center j o int 4 6
469 Air filter 47
4610 Hydraulic oil 47
4611 Replacing hydraulic oil filter
(Full-flow filter) 50
4612 Fuel tank 52
4613 Air tank 53
4614 Adjusting track link 53
4615 Electrical system 54
4616 Lubrication of front-attachment 56
4617 Bucket teeth point replacement 57
4 618 Reinstalling bucket pin seal 59
4619 Retightening bolts and nuts 60
4620 Caution in disassembling and repairs 62
47 Maintenance Service under Unusual Conditions 64
48 Precautions in Long Outage 66
5 TRANSPORTATION 6 7
51 Transportation 6 7
52 Dimensions for transport 68
6 TROUBLESHOOTING GUIDE 70
61 Engine 70
6 2 Engine Accessories 70
6 3 Control levers 71
6 4 Hydra u 1 i c Sys te m 7 2
65 Propelling 74
66 Swinging 74

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PLEASE NOTE:

• This is the same manual used by the dealers to diagnose and troubleshoot your vehicle
• You will be directed to the download page as soon as the purchase is completed. The whole payment and downloading process will take anywhere between 2-5 minutes
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