Section 14: STEERING
PA1562
6
2.2 POWER STEERING GEAR REMOVAL
WARNING
The steering gearbox weighs approximately 100
lbs (45 kg) dry. Exercise caution when handling.
1. Put a container into place, then disconnect
both the inlet and outlet hoses from the power
steering gear. Cover fittings to prevent fluid
contamination.
2. Mark both the pitman arm and sector shaft
with a line, then remove pitman arm. Refer to
"11.1 Pitman Arm Removal" procedure.
3. Mark both the steering shaft universal joint
yoke and steering gear input shaft with a line,
then disconnect universal joint.
4. Unscrew and remove the power steering gear.
2.3 POWER STEERING GEAR
INSTALLATION
Reverse "Power Steering Gear Removal"
procedure paying particular attention to the
following:
1. Tighten fasteners as recommended under
paragraph 14: ‘’Torque Specifications".
2. Bleed air from the system as per step 3, next.
3. BLEEDING POWER STEERING
HYDRAULIC SYSTEM
To bleed the power steering hydraulic system,
refer to the "ZF-SERVOCOM Repair Manual"
annexed to this section, under heading "Setting
And Functional Test".
4. HYDRAULIC PRESSURE TEST
Perform a pressure test as outlined in the "ZF-
SERVOCOM Repair Manual" annexed to this
section under heading "Setting And Functional
Test".
5. TROUBLESHOOTING
Perform troubleshooting of the steering gear as
outlined in the "ZF-SERVOCOM Repair Manual",
the "ZF-SERVOCOM Operating, Servicing
/Maintenance and Inspection Instructions and the
"TRW - Power Steering Pump Service Manual".
NOTE
For vehicles equipped with ZF-
SERVOCOMTRONIC unit, refer to the
supplement to the repair manual ZF-
SERVOCOM.
6. POWER STEERING HYDRAULIC PUMP
6.1 WITH DDC SERIES 60 ENGINE
6.1.1 Description
The TRW PS Series power steering pump is a
vane type, gear driven, hydraulic unit which
supplies hydraulic pressure for the operation of
the steering gear. The pump is mounted on the
engine, on the crankshaft pulley’s R.H. side.
6.1.2 Removal And Installation
The pump is accessible through the engine
compartment rear door.
To remove the pump, proceed as follows:
1. Put an empty container directly below pump,
then disconnect both the inlet and outlet
hoses from the pump. Block fitting cavities to
prevent fluid contamination.
2. Remove the two (2) mounting screws, then
slowly pry out the pump.
3. Remove and discard gasket.
CAUTION
Inspect the drive coupling thoroughly, and
replace if necessary (the drive coupling is a
fiber component located between the engine
and the pump).
For pump installation, reverse the removal
procedure paying particular attention to the
following:
CAUTION
Ensure that drive coupling is correctly
positioned before reinstalling the pump.
1. Install a new gasket (Prévost P/N 510488).
2. Bleed air from the system as per step 3,
"Bleeding Power Steering Hydraulic System".
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