Hitachi Hydraulic Excavator UH073 Service Manual – PDF DOWNLOAD

Description

Hitachi Hydraulic Excavator UH073 Service Manual – PDF DOWNLOAD

FILE DETAILS:

Hitachi Hydraulic Excavator UH073 Service Manual – PDF DOWNLOAD

Language : English
Pages :394
Downloadable : Yes
File Type : PDF
Size:20.4 MB

IMAGES PREVIEW OF THE MANUAL:

DESCRIPTION

Hitachi Hydraulic Excavator UH073 Service Manual – PDF DOWNLOAD

FOREWORD

• This service manual explains the correct maintenance and repair procedures to ensure optimal performance and maximum service life for Hitachi construction machinery.
• Tne serviceman is requested to read the manual thoroughly and consult it whenever he is not sure of correct servicing. Use the manual not only as a reference guide to maintenance but also a textbook to train new serviceiren who are lillfamiliar with Hitachi construction machinery.
• The manual is divided into four sections such as SPECIFICATIONS, OPERATIONAL PRINCIPLE, DISASSEMBLY and ASSEMBLY and MAINTENANCE STANDARD. A thorough knowledge of the these will help to:

1.  Diagnose the cause of the failure.
2. Determine reuse or replacement of parts.
3. 3. Install the units and assemble the parts correctly.

• We hope that this manual will aid in quick, easy and lower cost servicing of the machines.

TABLE OF CONTENTS:

Hitachi Hydraulic Excavator UH073 Service Manual – PDF DOWNLOAD

UH073 SERVICE MANUAL…………………………….. 1
FOWORD……………………………………… 1
CARE OF THE HANDLING…………………………. 2
SECTION 01 SPECIFICATIONS…………………….. 3
Group 01 Specifications ………………….. 4
Engine ……………………………… 4
Main Pump …………………………… 8
Pilot Pump ………………………….. 9
Left Cntrol Valve ……………………. 10
Right Cntrol Valve …………………… 11
Assist Valve…………………………. 12
Pilot Valve………………………….. 12
Swing Device…………………………. 12
Travel Device………………………… 13
Center Joint…………………………. 13
Boom Cylinder………………………… 13
Arm Cylinder…………………………. 14
Bucket Cylinder………………………. 14
Auto Idle Cylinder……………………. 14
Hydraulic Tank……………………….. 14
Full-Flow Filter……………………… 14
Suction Filter……………………….. 14
Oil Cooler…………………………… 15
Solenoid Valve……………………….. 15
Slow Return Valve(For Arm Cylinder)…….. 15
Relief Valve(For Oil Cooler)…………… 15
Check Valve(For Arm Cylinder)………….. 15
Check valve(For Switch Valve)………….. 15
Check Valve(With Orifice)……………… 15
Restriction Valve…………………….. 16
Cap(With Pressure Valve And Vent Valve)…. 16
SECTION 02 OPERATIONAL PRINCIPLE………………. 17
Group 01 General…………………………. 18
Hydraulic System……………………… 19
Superstructure……………………….. 49
Undercarriage………………………… 57
Electric System………………………. 62
Group 02 Auto-Idling System……………….. 65
Group 03 Air Conditioner………………….. 77
Group 04 Assist Valve…………………….. 98
General……………………………… 99
Neutral Position……………………… 99
Spool Pulling Operation………………..100
Spool Pushing Operatio…………………101
Group 05 Control Valve…………………….102
Group 06 Cylinder…………………………114
Group 07 Full-Flow Filter………………….117
Construction………………………….118
Function……………………………..119
Group 08 Mx Type Swing Device………………120
Group 09 MAG-87KP-200 Motor………………..130
Group 10 Monitor………………………….142
Group 11 NV84DT-100R-1334B Pump…………….164
SECTION 03 DISASSEMBLY AND ASSEMBLY…………….179
Group 01 Assist Valve……………………..180
Group 02 Center Joint……………………..187
Group 03 Compressor(For Air Conditioner)…….193
Group 04 CV22 Control Valve………………..206
Group 05 Cylinder…………………………239
Group 06 Mx Type Swing Device………………266
Group 07 Mag-87KP-2000 Motor……………….289
Group 08 Lower Lorrer……………………..316
Group 09 Nv Type Axial Pump………………..320
Group 10 Track Adjuster……………………337
Group 11 Upper Roller……………………..352
SECTION 03 MAINTENANCE STANDERD………………..356
Maintenance Standard………………………356

Questions? Email us: [email protected]

https://vimeo.com/814621670

PLEASE NOTE:

• This is the same manual used by the DEALERSHIPS to SERVICE your vehicle.
• The manual can be all yours – Once payment is complete, you will be taken to the download page from where you can download the manual. All in 2-5 minutes time!!
• Need any other service / repair / parts manual, please feel free to contact us at heydownloadss @gmail.com . We may surprise you with a nice offer

S.M