Hitachi EX200-2 Workshop Manual

Hydraulic excavator

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Contents

Specifications

Workshop Manual

EX200

-2

Table of Contents

2
Contents
3
Specifications
3
Tightening Torque Specifications
4
Torque Chart
4
Metric Bolt Torque Chart
5
Inch Bolt Torque Chart
6
ORS Coupling Nut Tightening Torque Specifications
7
Pipe Thread Connection - Union Joint Tightening Torque Specifications
9
Painting Standards
10
Upperstructure
12
Remove and Install Cab
14
Install Cab
16
Remove and Install Counterweight
17
Install Counterweight
18
Remove and Install Main Frame
22
Install Main Frame
23
Remove and Install Pump Device
24
Assembling of Pump System
24
Pump System Parts List
25
Disassemble Pump Device
25
Precautions for Disassembly
36
Assemble Pump Device
36
Pump Device Drawing for Assembly
37
Assemble Pump
37
Assemble Disk Drive Subassembly
39
Set Bearing Preload
40
Assemble Pilot Gear Pump
49
Install Sensor
51
Assemble Gear Pump and Pipes
52
Install Oil Seals
53
Disassemble and Assemble Pilot Gear Pump
53
Pilot Gear Pump Drawing
57
Assemble Pilot Gear
60
Remove and Install Control Valve
64
Control Valve
65
Disassemble Control Valve
65
Disassemble the 3-Spool Side of Control Valve
66
Disassemble for Load Check Valve
67
Disassemble for Shuttle Valve
67
Disassemble the Main Relief System
68
Disassemble for the DP Sensor of Pressure Plug
68
Disassemble for Upper Cover
69
Disassemble for Spools
70
Disassemble for under Cover
73
Disassemble for Control Valve
73
Disassemble 4-Spool and 3-Spool Side
73
Disassemble for 4-Spool Side
77
Disassemble for Regenerative Valve of Arm
80
Disassemble for System Pressure Regulator
82
Assemble for 3-Spool Control Valve
82
Assemble for Spools
83
Assemble for Spool Assembly
83
Assemble for Upper Cover
84
Assemble for Plug of DP Sensor
84
Assemble for Main Relief System
84
Assemble for Shuttle Valve
85
Assemble for Variable Pressure Compensated Valve
85
Assemble for Load Check Valve
86
Assemble for under Cover
89
Assemble for 4-Spool Control Valve
89
Assemble for Spool
100
Main Relief Valves
101
Disassembly of Main Relief Valve
102
Main Relief Valve Drawing for Assembly
103
Assembly of Main Relief Valve
105
Adjustment of Low Pressure Side
105
Pressure Adjustment
105
Adjustment of over Load Relief Valve
107
Swing Device
107
Removal and Installation of Swing Device
108
Swing Device Drawing for Disassembly
109
Disassembly of Swing Device
109
Removal of Motor
114
Disassembly of the First Stage Carrier
115
Disassembly of the Second Stage Carrier
116
Swing Device Drawing for Assembly
117
Assembly of Swing Device
117
Assembly of the First Stage Carrier
118
Assembly of the Second Stage Carrier
125
Swing Motor Drawing for Disassembly
126
Disassembly of Swing Motor
126
Removal of Relief Valve Assembly
126
Removal of Make-Up Valve
133
Swing Motor Drawing for Assembly
134
Assembly of Swing Motor
141
Installation of Make-Up Valve
141
Installation of Relief Valve
142
Relief Valve Drawing for Disassembly
142
Relief Valve Assembly
142
Relief Valve
146
Relief Valve Drawing for Assembly
147
Assembly of Relief Valve
150
Maintenance Standard
150
Swing Motor
152
Tools Used
153
Removal and Installation of Left Pilot Valve for Front Control
154
Removal and Installation of Right Pilot Valve for Front Control
155
Front Pilot Valve Drawing for Disassembly
156
Precautions for Disassembling
156
Disassembling Pilot Valve for Front Control
157
Disassembling of Casing
163
Front Pilot Valve Drawing for Assembly
164
Assembling Pilot Valve for Front Control
164
Assembling of Spool Assembly
173
Pilot Valve
173
Removal and Installation of Pilot Valve for Traveling Control
174
Travel Pilot Valve Drawing for Disassembly
175
Pilot Valve for Traveling Control
175
Disassembling of Pilot Valve for Traveling Control
182
Travel Pilot Valve Drawing for Assembly
183
Assembling of Pilot Valve for Traveling

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Summary of Contents for Hitachi EX200-2

Page 1 Workshop Manual EX200...