Hitachi UH081 Excavator Service Manual PDF

This service manual explains correct maintenance and repair procedures to ensure optimal performance and maximum service life for Hitachi excavator UH081.
Service manual contains information on the maintenance and repair, provides specific installation instructions, technical specifications, troubleshoot information for HItachi excavator.
This guide is an assistant for the owners of HItachi excavator, which will be useful to operators, professionals working for the maintenance and repair.
This service manual has a friendly and easy to use interface. Manual comes in PDF format. We recommend to use Adobe PDF Reader, to be sure all images / graphics will display correctly.

CONTENTS:
UH081 SPECIFICATIONS
1. ENGINE
2. MAIN PUMP
3. GEAR PUMP
4. CONTROL VALVE (LEFT)
5. CONTROL VALVE (RIGHT)
6. SWING MOTOR
7. BRAKE VALVE (FOR SWING MOTOR)
8. TRAVEL MOTOR
9. TRAVEL REDUCTION MECHANISM
10. BRAKE VALVE (FOR TRAVEL MOTOR)
11. PILOT BRAKE VALVE
12. SLOW RETURN VALVE
13. MAKE-UP VALVE
14. ARM CYLINDER
15. BUCKET CYLINDER
16. BOOM CYLINDER
17. CENTER JOINT
18. RELIEF VALVE
19. FULL-FLOW FILTER
20. DRAIN FILTER
21. SUCTION FILTER
22. OIL COOLER
23. HYDRAULIC TANK
24. SAFETY VALVE (ON HYDRAULIC TANK)
25. GOVERNOR
26. AIR TANK
27. SAFETY VALVE
28. AIR REGULATOR
29. AIR FILTER
30. AIR COMPRESSOR

UH081 OPERATIONAL PRINCIPLE
GENERAL
BRAKE VALVE FOR SWING MOTOR
CYLINDER
FULL-FLOW FILTER
HM MOTER
IP GEAR PUMP
MVP25 CONTROL VALVE
KVC PLUNGER PUMP
PREFERENCE VALVE (PILOT BRAKE VALVE)
REGULATOR
SLOW RETURN VALVE
SX MOTOR
SWING REDUCTION DEVICE
SLOW RETURN VALVE

UH081 DISASSEMBLY AND ASSEMBLY
BRAKE VALVE
CYLINDER
HM MOTOR
IP GEAR PUMP
MVP25 CONTROL VALVE
KVC PLUNGER PUMP
TRAVEL DEVICE
REGULATOR
SX MOTOR
SWING REDUCTION DEVICE
HOW TO DISASSEMBLE / ASSEMBLE HYDRAULIC EQUIPMENT
CONVERSION TABLE

UH081 MAINTENANCE STANDARDS
UNDERCARRIAGE
FRONT-END ATTACHMENT
PERFORMANCE STANDARDS
PRESSURE MEASUREMENT AND ADJUSTMENT
HYDRAULIC UNIT STANDARD
MEASURING INSTRUMENTS