Maintenance
STEERING HOUSING
AND CONTROL UNIT
ERC20-30AGF (ERC040-065RG/ZG) [E108];
ERC/P16-20AAF (ERC030-040AG/BG) [A814];
ERP20-30ALF [B216];
GC/GLC030-040AF [B809];
GLP/GDP16-20AF
(GP/GLP/GDP030-040AF) [B810];
GP/GLP/GDP2.00-3.00RF/TF
(GP/GLP/GDP040-060RG/TG/ZG) [A875];
GC/GLC040-065RG/TG/ZG [E187];
ERP20-30ALF (ERP040-060DH) [D216];
ERP20-32ALF (ERP040-065DH) [E216];
ERC/P16-20AAF (ERC030-040AH) [B814];
ERC20-32AGF (ERC040-065GH) [A908];
ERC35-55HG (ERC70-120HH) [B839/C839]
PART NO. 524158753 1600 YRM 720
SAFETY PRECAUTIONS
MAINTENANCE AND REPAIR
• When lifting parts or assemblies, make sure all slings, chains, or cables are correctly fas-
tened, and that the load being lifted is balanced. Make sure the crane, cables, and chains
have the capacity to support the weight of the load.
• Do not lift heavy parts by hand, use a lifting mechanism.
• Wear safety glasses.
• DISCONNECT THE BATTERY CONNECTOR before doing any maintenance or repair on
electric lift trucks. Disconnect the battery ground cable on internal combustion lift trucks.
• Always use correct blocks to prevent the unit from rolling or falling. See HOW TO PUT THE
LIFT TRUCK ON BLOCKS in the Operating Manual or the Periodic Maintenance section.
• Keep the unit clean and the working area clean and orderly.
• Use the correct tools for the job.
• Keep the tools clean and in good condition.
• Always use YALE APPROVED parts when making repairs. Replacement parts must meet
or exceed the specifications of the original equipment manufacturer.
• Make sure all nuts, bolts, snap rings, and other fastening devices are removed before using
force to remove parts.
• Always fasten a DO NOT OPERATE tag to the controls of the unit when making repairs, or
if the unit needs repairs.
• Be sure to follow the WARNING and CAUTION notes in the instructions.
• Gasoline, Liquid Petroleum Gas (LPG), Compressed Natural Gas (CNG), and Diesel fuel are
flammable. Be sure to follow the necessary safety precautions when handling these fuels
and when working on these fuel systems.
• Batteries generate flammable gas when they are being charged. Keep fire and sparks away
from the area. Make sure the area is well ventilated.
NOTE: The following symbols and words indicate safety information in this manual:
WARNING
Indicates a condition that can cause immediate death or injury!
CAUTION
Indicates a condition that can cause property damage!
Steering Housing and Control Unit Table of Contents
TABLE OF CONTENTS
General ................................................................................................................................................................ 1
Description .......................................................................................................................................................... 1
Operation ............................................................................................................................................................. 2
Steering Wheel and Column Assembly Repair ................................................................................................... 3
Assembly Components, Remove .................................................................................................................... 3
Steering Control Unit, Disassemble ................................................................................................................ 8
Steering Control Unit, Clean ........................................................................................................................... 8
Steering Control Unit, Assemble ..................................................................................................................... 8
Assembly Components, Install ........................................................................................................................ 10
System Air Removal ............................................................................................................................................ 12
Troubleshooting ................................................................................................................................................... 12
This section is for the following models:
ERC20-30AGF (ERC040-065RG/ZG) [E108];
ERC/P16-20AAF (ERC030-040AG/BG) [A814];
ERP20-30ALF [B216];
GC/GLC030-040AF [B809];
GLP/GDP16-20AF (GP/GLP/GDP030-040AF) [B810];
GP/GLP/GDP2.00-3.00RF/TF (GP/GLP/GDP040-060RG/TG/ZG) [A875];
GC/GLC040-065RG/TG/ZG [E187];
ERP20-30ALF (ERP040-060DH) [D216];
ERP20-32ALF (ERP040-065DH) [E216];
ERC/P16-20AAF (ERC030-040AH) [B814];
ERC20-32AGF (ERC040-065GH) [A908];
ERC35-55HG (ERC70-120HH) [B839/C839]
©2006 Yale Materials Handling Corp. i
1600 YRM 720 Description
General
This section has the description and repair procedures for the steering housing and the steering control unit. Addi-
tional information on parts of the steering system can be found in the Steering Axle and Hydraulic System service
manual sections for your lift truck.
Description
The steering column assembly uses a steering control
unit with hose connections on the bottom of the unit.
The steering housing has mounts for the steering col-
umn and the steering control unit. The steering wheel
is installed on the steering column. See Figure 1. The
housing is adjustable and is held in position by a latch.
The position of the housing can be changed for opera-
tor comfort. The steering housing is also the mount for
control levers and some instrument clusters.
The steering system is a hydraulic system that does
not have a mechanical connection between the steering
wheel and the steering axle. The control of the steering
is through a hydraulic circuit.
If the hydraulic pump for the steering system does not
operate, steering is still possible. A check valve permits
the steering control unit to control the steering cylinder.
The lift truck is difficult to steer when the steering pump
is not operating, but the steering control unit can oper-
ate the steering cylinder and make steering possible.
NOTE: INSTRUMENT CLUSTER NOT SHOWN.
GP/GLP/GDP2.00-3.00RF/TF (GP/GLP/GDP040-
060RG/TG/ZG) SHOWN.
1. STEERING WHEEL
2. STEERING
COLUMN
3. STEERING
CONTROL UNIT
4. COLUMN TILT
LEVER
5. LATCH
6. COVER
7. COWL
8. MOUNT
Figure 1. Steering Housing Assembly
1
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YALE B839 ERC35HG, ERC40HG, ERC45HG, ERC55HG (ERC070-120HH) Lift Truck Service Repair Manual
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