
Hitachi UH07-3 Excavator Service Manual PDF
[]This service manual explains the correct maintenance and repair procedures to ensure optimal performance and maximum service life for Hitachi construction machinery.
This manual is divided into four sections such as SPECIFICATIONS, OPERATIONAL PRINCIPLE, DISASSEMBLY AND ASSEMBLY, MAINTENANCE STANDARD.
This manual comes in PDF format, includes 381 pages, all pages are printable and readable. We recommend to use Adobe PDF Reader, to be sure all images / graphics will display correctly.
CONTENTS:
SPECIFICATIONS
1. ENGINE
2. PLUNGER PUMP
3. CONTROL VALVE
4. CONTROL VALVE
5. BRAKE VALVE (FOR SWING MOTOR)
6. SWING MOTOR
7. SWING REDUCTION DEVICE
8. BRAKE VALVE (FOR TRAVEL MOTOR)
9. TRAVEL MOTOR
10. TRAVEL REDUCTION DEVICE
11. PREFERENCE VALVE (FOR PARKING BRAKE)
12. SLOW RETURN VALVE (FOR ARM AND BOOM CYLINDERS)
13. ARM CYLINDER
14. BUCKET CYLINDER
15. BOOM CYLINDER
16. CENTER JOINT
17. ASSIST VALVE
18. RELIEF VALVE
19. FULL-FLOW FILTER
20. DRAIN FILTER
21. OIL COOLER
22. SUCTION FILTER
23. HYDRAULIC OIL TANK
24. SAFETY VALVE (ON HYDRAULIC OIL TANK)
25. AIR COMPRESSOR
26. GOVERNOR
27. AIR TANK
28. SAFETY VALVE (ON AIR TANK)
29. AIR REGULATOR
30. AIR FILTER
31. GEAR PUMP
OPERATIONAL PRINCIPLE
MAIN HYDRAULIC CIRCUIT
BOOM OPERATION
ARM OPERATION
BUCKET OPERATION
SWING OPERATION
TRAVEL DEVICE
UH07-3 HYDRAULIC CIRCUIT
AIR CIRCUIT
UH07-3 AIR CIRCUIT
DISASSEMBLY AND ASSEMBLY
BRAKE VALVE
CYLINDER
HM MOTOR
IP GEAR PUMP
JV112 CONTROL VALVE
MVP25 CONTROL VALVE
KVC PLUNGER PUMP
TRAVEL DEVICE
REGULATOR
SX MOTOR
SWING REDUCTION DEVICE
MAINTENANCE STANDARD
STANDARD
HM MOTOR
SX MOTOR
CYLINDER
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