Hitachi UH181 Excavator Service Manual PDF

This service manual explains correct maintenance and repair procedures to ensure optimal performance and maximum service life for Hitachi excavator UH181.
The serviceman is requested to read manual thoroughly and consult it whenever he is not sure of correct servicing.
This service manual comes in PDF format. You can print a specific part or all manual. We recommend to use Adobe PDF Reader, to be sure all images / graphics will display correctly.

CONTENTS:
UH181 SPECIFICATIONS
ENGINE
HYDRAULIC AND AIR UNIT
HYDRAULIC CIRCUIT (BACK HOE)
HYDRAULIC CIRCUIT (TILT-DUMPING TYPE LOADER)
HYDRAULIC CIRCUIT (BOTTOM DUMPING TYPE LOADER)
SCHEMATIC DIAGRAM OF ELECTRIC SYSTEM

UH181 OPERATIONAL PRINCIPLE
GENERAL
A-C GENERATOR
A-C REGULATOR
AIR CIRCUIT
SWING LOCK VALVE
TRAVEL BRAKE VALVE
SLOW RETURN VALVE (reference)
CONTROL VALVE
CYLINDER (reference)
SWING MOTOR (reference)
TRAVEL MOTOR
PILOT PUMP
PILOT VALVE
KVC932 PUMP & R1325 REGULATOR
HPV125B PUMP & RH16A REGULATOR
MONITOR
MONITOR TROUBLESHOOTING

UH181 DISASSEMBLY AND ASSEMBLY
A-C GENERATOR
SWING LOCK VALVE
CONTROL VALVE
CYLINDER
ASSEMBLY of UH181
EXCHANGING FRONT-END ATTACHMENT
HTM A TYPE MOTOR
TRAVEL MOTOR (MB500)
SWING PUMP (HPV125B)
MAIN PUMP (KVC932)
PILOT PUMP
PILOT VALVE
PILOT VALVE (For Travel: reference)

UH181 MAINTENANCE STANDARD
MAINTENANCE GUIDE
MAINTENANCE STANDARD
PERFORMANCE STANDARD
HYDRAULIC UNIT STANDARD