CONTENTS
SECTION 1 GENERAL
Group 1 Safety Hints
1-1
Group 2 Specifications
1-5
Group 3 Periodic Replacement
1-13
SECTION 2 REMOVAL AND INSTALLATION OF UNIT
Group 1 Structure
2-1
Group 2 Removal and Installation of Unit
2-2
SECTION 3 POWER TRAIN SYSTEM
Group 1 Structure and Operation
3-1
Group 2 Troubleshooting
3-15
Group 3 Tests and Adjustments
3-19
Group 4 Disassembly and Assembly
3-23
SECTION 4 BRAKE SYSTEM
Group 1 Structure and Function
4-1
Group 2 Operational Checks and Troubleshooting
4-6
Group 3 Tests and Adjustments
4-9
SECTION 5 STEERING SYSTEM
Group 1 Structure and Function
5-1
Group 2 Operational Checks and Troubleshooting
5-10
Group 3 Disassembly and Assembly
5-12
SECTION 6 HYDRAULIC SYSTEM
Group 1 Structure and Function
6-1
Group 2 Operational Checks and Troubleshooting
6-17
Group 3 Disassembly and Assembly
6-21
SECTION 7 ELECTRICAL SYSTEM
Group 1 Component Location
7-1
Group 2 Electrical Circuit
7-2
Group 3 Component Specification
7-9
Group 4 Troubleshooting
7-12
SECTION 8 MAST
Group 1 Structure
8-1
Group 2 Operational Checks and Troubleshooting
8-5
Group 3 Adjustment
8-8
Group 4 Removal and Installation
8-11
5-12
GROUP 3 DISASSEMBLY AND ASSEMBLY
1. STEERING UNIT
STRUCTURE
1)
D255SS06
1
Dust seal
2
Retaining ring
3 Cap seal
4
Thrust bearing
5
Ball
6
Pin
7
Spacer
8 Center spring
9 Washer
10 O-ring
11 Seal
12 Roller screw
13 Gerotor set
14 Bearing race
15 Bore screw
16 Drive
17 End cap
18 Gland bushing
19 Plate
20 Cap screw
21 Housing
22 Spool
23 Sleeve
24 Relief valve
24-1 Plug
24-2 O-ring
24-3 Spring seat
24-4 Spring
24-5 Spool
24-6 Bushing
25 Check valve
25-1 Guide
25-2 Shim
25-3 Spring
25-4 Washer
26 Suction valve
26-1 Roll pin
26-2 Ball
TOOLS
Holding tool.
5-13
2)
(1)
Assembly tool for O-ring and kin-ring.
(2)
Assembly tool for lip seal.
(3)
Assembly tool for cardan shaft.
(4)
5-69(1)
5-69(2)
5-69(3)
5-69(4)
5-14
Assembly tool for dust seal.
(5)
Torque wrench 0~7.1kgf·m
(0~54.4lbf·ft)
13mm socket spanner
6