CRAWLER EXCAVATOR R55-7A
FOREWORD
CONTENTS
 
SECTION 1
GENERAL
Group 1 Safety Hints
Group 2 Specifications
SECTION 2
STRUCTURE AND FUNCTIONND FUNCTION
Group 1 Pump Device
Group 2 Main Control Valve
Group 3 Swing Device
Group 4 Travel Motor
Group 5 RCV Lever
SECTION 3
HYDRAULIC SYSTEM
Group 1 Hydraulic Circuit
Group 2 Main Circuit
Group 3 Pilot Circuit
Group 4 Single Operation
Group 5 Combined Operation
SECTION 4
ELECTRICAL SYSTEM
Group 1 Component Location
Group 2 Monitoring System
Group 3 Electrical Circuit
Group 4 Electrical Component Specification
Group 5 Connectors
SECTION 5
TROUBLESHOOTING
Group 1 Before Troubleshooting
Group 2 Hydraulic and Mechanical System
Group 3 Electrical System
SECTION 6
  MAINTENANCE STANDARD
Group 1 Operating Performance Test
Group 2 Major Components
Group 3 Track and Work Equipment
SECTION 7
  DISASSEMBLY AND ASSEMBLY
Group 1 Precaution
Group 2 Tightening Torque
Group 3 Pump Device
Group 4 Main Control Valve
Group 5 Swing Device
Group 6 Travel Device
Group 7 RCV Lever
Group 8 Turning Joint
Group 9 Boom, Arm, Bucket Cylinder
Group 10 Undercarriage
Group 11 Work Equipment
SECTION 8

 

 COMPONENT MOUNTING TORQUE
Group 1

Introduction guide
Group 2

Engine system
Group 3

Electric system
Group 4

Hydraulic system
Group 5

Undercarriage
Group 6

Structure
Group 7

Work equipment

APPENDIX