Mec 4069RT - Section C: Scissor Assembly

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March 2014

Page C-1

“4069RT” Parts Section

ECTION

CISSOR

SSEMBLY

CONTENTS PAGE

Scissor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Main Page

Table of Contents3
Machine Specifications8
MEC Operator Policy9
Safety Symbols10
General Safety Tips11
Hydraulic System12
Electrical System12
Total System12
Primary Machine Components13
Emergency Lowering16
Lift and Support the Machine18
Hydraulic System - General21
Hydraulic Roadmap22
Hydraulic Fluid23
Handling Precautions23
Fluid Recommendations23
System Flushing Procedure23
Hydraulic Fluid Reservoir25
Hydraulic Pump26
Hydraulic Pump Seals28
Functions Manifold & Hydraulic Valves29
Hydraulic Pressure Adjustment31
System Descriptions34
Pump Circuit34
Lift Circuit35
Lift Vent Circuit36
Steering Circuit37
Front Drive Circuit38
Rear Drive Circuit39
Brake Release Circuit40
Drive Case Drain Circuit41
Outrigger Circuit42
General Cylinder Repair44
Preparation44
Cylinder Disassembly44
Electrical System - General47
Batteries49
Battery Maintenance (in Use)50
Battery Replacement51
Controls52
Lower Controls52
Upper Controls53
Alarms and Switches54
Deutsch Connectors57
Continuity Checks59
GP400 Control Module Setup61
Location61
General Description62
Calibration Problems68
Failure Messages68
Information Messages73
Base79
Tires and Wheels79
Hoses and Cables80
Platform80
Scissor Stack82
Lift Cylinders84
Steer Cylinders86
Drive Motors87
Front Drive Motors88
Lubrication89
DIESEL Engine Maintenance90
General Troubleshooting Tips99
Electrical System Troubleshooting100
GP400 Module101
Matrix Module102
Terminal Block Module (TBM)102
EZ-Cal Scan Tool103
EZ-Cal Diagnostics108
MODE Messages112
OTHER Messages117
Troubleshooting Chart118
- Hydraulic Schematics Table121
- Platform Controls135
- Upper Control Box Cover Assembly137
- Upper Control Joystick139
- Base Controls141
- Option -- Onboard Diagnostic Center142
- Platform Assembly147
- Main Platform149
- Deck Extension150
- OPTION -- GSE Platform152
- OPTION -- GSE Deck Extension, 1154
- OPTION -- GSE Deck Extension, 2156
- OPTION -- GSE Main Platform, 1158
- OPTION -- GSE Main Platform, 2160
- OPTION -- Material Clamps/Pipe Racks162
- Section C: Scissor Assembly165
- Section D Wheel Assemblies169
- Wheels & Hubs171
- Wheel Motors & Steering Yoke Components173
- Steering Components175
- Hydraulic Components178
- Functions Manifold, 1179
- Functions Manifold, 2183
- Hydraulic Reservoir184
- Hydraulic Pump186
- Wheel Motor/Brake Unit189
- Lift Cylinders190
- Steer Cylinders193
- OPTION -- Outrigger Cylinders195
- Hoses -- Pump & Manifold197
- Hoses -- Lift Circuit199
- Hoses -- Lift Cylinder Drain, Current Machines201
- Hoses -- Lift Cylinder Drain, Early Machines203
- Hoses -- Steer Circuit205
- Hoses -- Drive Circuit, Front Wheels207
- Hoses -- Drive Circuit, Rear Wheels209
- Hoses -- Brake Circuit211
- Hoses -- Case Drain Circuit213
- Hoses -- Outrigger Circuit215
- Control Module218
- Engine Module221
- Diesel Engine, 1223
- Diesel Engine, 2224
- Diesel Engine, 3226
- Dual Fuel Engine, 1228
- Dual Fuel Engine, 2230
- Dual Fuel LP Tank233
- Counterweight Assembly234
- Ladders236
- OPTION -- Outriggers238
- Wiring Harness Components240
- Decals, ANSI Specification243
- Decals, CE Specification245
- Decals, GSE Diesel Option, CE Specification245

Mec 4069RT - Section C: Scissor Assembly

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