Power Steering Pump: Testing and Inspection
Diagnosis and Testing - Power Steering Pump and Hoses
POWER STEERING PUMP AND HOSES
NOTE: This information is designed to be used in conjunction with the diagnostic charts at the beginning of the Steering section. See: Testing
CHECKING FOR WEAR OF POWER STEERING PUMP INTERNAL COMPONENTS
1. Place gear selector in PARK (or NEUTRAL) with wheels chalked.
2. With the engine idling, have a helper turn the steering wheel.
3. Using an electronic listening tool, determine if noise is coming from the pump.
4. Increase the engine speed and have a helper turn the steering wheel. Does the noise change with load?
5. Replace the power steering pump if excessive noise is present. See: Service and Repair/Removal and Replacement/Power Steering Pump -
CHECKING FOR POWER STEERING HOSES TOUCHING BODY OR FRAME OF VEHICLE
Check hoses and hose tubes as following:
Inspect hoses and hose tubes for witness marks. If witness marks are present, adjust hose(s) to the proper position by loosening, repositioning and
tightening attachments to the specified torque See: Specifications . Do not bend tubing to adjust. Replace the hose assembly if damaged.
Check fastener torque of hose mounting brackets and tube nuts. See: Specifications
Have a helper bump the steering gear off of the stops to induce pressure fluctuations which may move the hose. If hose contact is made, adjust
hose(s) to the proper position by loosening, repositioning and tightening attachments to the specified torque See: Specifications . Do not bend
tubing to adjust. Replace the hose assembly if damaged.