Yale GDP25UX

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8000 YRM 2199 Figure 76. PDM (Suitable For All Engines) 87/(88 blank)

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Table of Contents5
Forklift Truck Main Parts9
Description of Forklift Truck Main Parts9
Forklift Main Technical Parameters10
Main Technical Parameters10
Power System13
Engine System13
Engine Overview13
Fuel System14
Fuel Tank15
Fuel Level Sensor16
Maintenance of Fuel System17
Fuel Filter Service17
Hydraulic Transmission Case and Torque Converter18
Overview18
Torque Converter19
Hydraulic Clutch20
Control Valve, Safety Valve, and Inching Valve21
Transmission Case23
Transmission Pump23
Transmission Hydraulic Schematic23
Speed Reducer and Speed Differential24
Speed Reducer24
Speed Differential25
Towing the Lift Truck25
Oil Inlet/Outlet Connection Location26
Drive Axle26
Overview26
Maintenance of Drive Axle27
Steering System28
Overview28
Hydraulic Steering Gear Assembly28
Steering Cylinder29
Inspection of Reassembled Steering System30
Troubleshoot Steering System31
Steering and Drive Axle Information32
Steering Axle32
Overview32
Steering Knuckle and Steering King Pin33
Steering Wheel Bearing Pre-Load Information34
Brake System34
Overview35
Brake Master Cylinder35
Wheel Brake35
Automatic Brake Adjuster39
Manual Brake40
Adjustment of Brake Pedal40
Maintenance40
Disassemble, Wheel Brake41
Examination of Wheel Brake43
Assemble, Wheel Brake44
Operating Test Automatic Clearance Regulator46
Troubleshoot Wheel Brake48
Hydraulic System49
Overview49
Steering Control Unit50
Multi-Way Valve and Priority Spool50
Operation of Spool Valve50
Neutral Position50
Spool Valve (Pushed In)51
Spool Valve (Pulled Out)51
Primary Relief Valve and Priority Spool51
Inclined Auto-Lock Valve52
Hydraulic System Main Oil Circuit53
Lift Cylinder55
Velocity Fuse57
Tilt Cylinder58
Maintenance of Hydraulic Pump59
Disassemble, Main Oil Pump59
Inspection and Repair59
Assemble, Main Oil Pump62
Test63
Troubleshoot Hydraulic System67
Lifting System68
Safety Procedures When Working Near Mast68
Overview70
Inside and Outside Masts70
Carriage71
Adjustment of Lifting System71
Electrical System72
Overview72
Power Supply System72
Starting System72
Ignition System (ICE Forklift Truck)72
Preheating System (Diesel Forklift Truck)72
Dash Instrument Display System73
Lighting, Sound and Alarm System73
Electrical Box73
Battery73
Description and Summary of Basic Truck Operations74
Introduction to the Power Distribution Module (PDM)75
Electrical Schematics75
Troubleshoot Electrical System89
Troubleshooting89
Drive, Operation, and Routine Maintenance of Forklift Truck90
Cooling System Troubleshooting and Service90
Coolant Level Check90
Flushing the Cooling System90
Adding Antifreeze/Coolant90
Cleaning the Radiator90
Oils Used for Forklift Truck91
Hydraulic Oil Gauge and Hydraulic Oil Fill91
General Inspection Requirements91
Fill Level Requirements91

Table of Contents

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