©2021 Yale Materials Handling Corp.
TABLE OF CONTENTS
Forklift Truck Main Parts......................................................................................................................................... 1
Description of Forklift Truck Main Parts................................................................................................................1
Forklift Main Technical Parameters......................................................................................................................... 2
Main Technical Parameters.................................................................................................................................. 2
Power System......................................................................................................................................................... 5
Engine System......................................................................................................................................................5
Engine Overview................................................................................................................................................5
Fuel System....................................................................................................................................................... 6
Fuel Tank.........................................................................................................................................................7
Fuel Level Sensor............................................................................................................................................8
Maintenance of Fuel System...........................................................................................................................9
Fuel filter service...........................................................................................................................................9
Hydraulic Transmission Case and Torque Converter............................................................................................10
Overview.............................................................................................................................................................10
Torque Converter................................................................................................................................................ 11
Hydraulic Clutch..................................................................................................................................................12
Control Valve, Safety Valve, and Inching Valve.................................................................................................. 13
Transmission Case............................................................................................................................................. 15
Transmission Pump............................................................................................................................................ 15
Transmission hydraulic schematic .....................................................................................................................15
Speed Reducer and Speed Differential.............................................................................................................. 16
Speed Reducer................................................................................................................................................ 16
Speed Differential.............................................................................................................................................17
Towing the Lift Truck...........................................................................................................................................17
Oil Inlet/Outlet Connection Location................................................................................................................... 17
Drive Axle..............................................................................................................................................................18
Overview.............................................................................................................................................................18
Maintenance of Drive Axle..................................................................................................................................19
Steering System....................................................................................................................................................20
Steering System................................................................................................................................................. 20
Overview.......................................................................................................................................................... 20
Hydraulic Steering Gear Assembly................................................................................................................20
Steering Cylinder...........................................................................................................................................21
Inspection of Reassembled Steering System.................................................................................................. 22
Troubleshoot Steering System.........................................................................................................................23
Steering and Drive Axle Information..................................................................................................................... 24
Steering Axle...................................................................................................................................................... 24
Overview.......................................................................................................................................................... 24
Steering Knuckle and Steering King Pin.......................................................................................................... 25
Steering Wheel Bearing Pre-load Information..................................................................................................26
Brake System........................................................................................................................................................26
Overview.............................................................................................................................................................27
Brake Master Cylinder........................................................................................................................................ 27
Wheel Brake....................................................................................................................................................... 27
Automatic Brake Adjuster................................................................................................................................... 31
Manual Brake......................................................................................................................................................32
Adjustment of Brake Pedal................................................................................................................................. 32
Maintenance....................................................................................................................................................... 32
Disassemble, Wheel Brake..............................................................................................................................33
Examination of Wheel Brake............................................................................................................................35
Assemble, Wheel Brake...................................................................................................................................36
Operating Test Automatic Clearance Regulator...............................................................................................38
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