STEERING
TABLE OF CONTENTS
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POWER STEERING .........................1
POWER STEERING PUMP ................... 6
RACK & PINION STEERING GEAR............11
STEERING COLUMN .......................15
POWER STEERING
TABLE OF CONTENTS
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DESCRIPTION AND OPERATION
STEERING SYSTEM .......................1
DIAGNOSIS AND TESTING
POWER STEERING SYSTEM ................2
POWER STEERING FLOW AND PRESSURE.....4
DESCRIPTION AND OPERATION
STEERING SYSTEM
DESCRIPTION
Power steering systems consist of:
• Steering column
• Rack and pinion steering gear
• Belt driven hydraulic steering pump
• Pump pressure and return hoses
• Oil Cooler
OPERATION
The steering column shaft is attached to the gear
pinion. The rotation of the pinion moves the gear
rack from side-to-side. This lateral action of the rack
pushes and pulls the tie rods to change the direction
of the front wheels.
Power assist is provided by an engine mounted
hydraulic pump, (Fig. 1) and (Fig. 2) the pump sup-
plies hydraulic fluid pressure to the steering gear.
Some vehicles are equipped with an oil cooler.
Fig. 1 Steering Pump, Gear And Oil Cooler - 5.2L &
5.9L
1 – HYDRAULIC PUMP
2 – RACK AND PINION GEAR
3 – OIL COOLER
DN STEERING 19 - 1
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