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Yale A7S1 User Manual
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Disassemble, Wheel Brake
STEP 1.
Remove the spring of the secondary brake shoes,
and the adjusting lever
, top lever
, and the top
lever return spring.
STEP 2.
Remove the return springs for the two brake
shoes.
STEP 3.
Remove the other three fixed springs.
8000 YRM 2199
Brake System
33
40
42
Table of Contents
Table of Contents
5
Forklift Truck Main Parts
9
Description of Forklift Truck Main Parts
9
Forklift Main Technical Parameters
10
Main Technical Parameters
10
Power System
13
Engine System
13
Engine Overview
13
Fuel System
14
Fuel Tank
15
Fuel Level Sensor
16
Maintenance of Fuel System
17
Fuel Filter Service
17
Hydraulic Transmission Case and Torque Converter
18
Overview
18
Torque Converter
19
Hydraulic Clutch
20
Control Valve, Safety Valve, and Inching Valve
21
Transmission Case
23
Transmission Pump
23
Transmission Hydraulic Schematic
23
Speed Reducer and Speed Differential
24
Speed Reducer
24
Speed Differential
25
Towing the Lift Truck
25
Oil Inlet/Outlet Connection Location
26
Drive Axle
26
Overview
26
Maintenance of Drive Axle
27
Steering System
28
Overview
28
Hydraulic Steering Gear Assembly
28
Steering Cylinder
29
Inspection of Reassembled Steering System
30
Troubleshoot Steering System
31
Steering and Drive Axle Information
32
Steering Axle
32
Overview
32
Steering Knuckle and Steering King Pin
33
Steering Wheel Bearing Pre-Load Information
34
Brake System
34
Overview
35
Brake Master Cylinder
35
Wheel Brake
35
Automatic Brake Adjuster
39
Manual Brake
40
Adjustment of Brake Pedal
40
Maintenance
40
Disassemble, Wheel Brake
41
Examination of Wheel Brake
43
Assemble, Wheel Brake
44
Operating Test Automatic Clearance Regulator
46
Troubleshoot Wheel Brake
48
Hydraulic System
49
Overview
49
Steering Control Unit
50
Multi-Way Valve and Priority Spool
50
Operation of Spool Valve
50
Neutral Position
50
Spool Valve (Pushed In)
51
Spool Valve (Pulled Out)
51
Primary Relief Valve and Priority Spool
51
Inclined Auto-Lock Valve
52
Hydraulic System Main Oil Circuit
53
Lift Cylinder
55
Velocity Fuse
57
Tilt Cylinder
58
Maintenance of Hydraulic Pump
59
Disassemble, Main Oil Pump
59
Inspection and Repair
59
Assemble, Main Oil Pump
62
Test
63
Troubleshoot Hydraulic System
67
Lifting System
68
Safety Procedures When Working Near Mast
68
Overview
70
Inside and Outside Masts
70
Carriage
71
Adjustment of Lifting System
71
Electrical System
72
Overview
72
Power Supply System
72
Starting System
72
Ignition System (ICE Forklift Truck)
72
Preheating System (Diesel Forklift Truck)
72
Dash Instrument Display System
73
Lighting, Sound and Alarm System
73
Electrical Box
73
Battery
73
Description and Summary of Basic Truck Operations
74
Introduction to the Power Distribution Module (PDM)
75
Electrical Schematics
75
Troubleshoot Electrical System
89
Troubleshooting
89
Drive, Operation, and Routine Maintenance of Forklift Truck
90
Cooling System Troubleshooting and Service
90
Coolant Level Check
90
Flushing the Cooling System
90
Adding Antifreeze/Coolant
90
Cleaning the Radiator
90
Oils Used for Forklift Truck
91
Hydraulic Oil Gauge and Hydraulic Oil Fill
91
General Inspection Requirements
91
Fill Level Requirements
91
4
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Yale A7S1 Specifications
General
Brand
Yale
Model
A7S1
Category
Forklifts
Language
English
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