Illustrated factory Service Manual for Hitachi Crawler Excavators Models UH121.

This manual will assist you in diagnosing, analyses, testing, and repair for your crawler excavator.
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Covered Models:
   UH121

Format: PDF, 594 pages
Language: English
Table of Contents:
   UH121
   FOREWORD
   CARE OF THE HANDLING
   SPECIFICATIONS
   OPERATIONAL PRINCIPLE
      GENERAL(Machine Serial No.~ 1129)
      GENERAL(Machine Serial No. 1129~)
      ASSIST VALVE
      BRAKE VALVE
      CYLINDER
      FULL-FLOW FILTER
      HM MOTOR
      HPV125 AXIAL PISTON PUMP
      IP GEAR PUMP
      MVP CONTROL VALVE
      KVC PLUNGER PUMP
      PREFERENCE VALVE
      REGULATOR
      RM75A REGULATOR
      SLOW RETURN VALVE
      SX MOTOR
      SWING REDUCTION DEVICE
   DISASSEMBLY and ASSEMBLY
      BRAKE VALVE
      CYLINDER
      HM MOTOR
      HPV125 AXIAL PISTON PUMP (Serial No.~ 1129)
      IP GEAR PUMP
      MPV CONTROL VALVE
      KVC PLUNGER PUMP (Serial No. 001~ 1128)
      TRAVEL DVICE
      REGULATOR (Serial No. 001~ 1128)
      RM75A REGULATOR (Serial No. 1129~)
      SX MOTOR
      SWING REDUCTION DEVICE
      HOW TO DISASSEMBLY/ ASSEMBLE-HYDRAULIC EQUIPMENT
      CONVERSION TABLE
   MAINTENANCE STANDARD
      UH121 MAINTENANCE STANDARD
      CYLINDER
      HM MOTOR
      SX MOTOR