Power Steering System - Bleeding Procedure

Bulletin No. T 87-55
File in Group 3B
Number 21
Corp. Ref. No. 713202
Date Jan. '87
SUBJECT: POWER STEERING SYSTEM BLEEDING

MODELS AFFECTED: ALL WITH RACK AND PINION STEERING GEAR

All air must be removed from the power steering system prior to starting the car after performing any service operation which introduces air to the hydraulic fluid. Any operation which involves disconnection of power steering lines, fittings or hoses will allow air to enter the power steering fluid. Air in the fluid may cause pump cavitation noise and damage to the pump may result if the pump is allowed to run for long periods of time with air in the hydraulic system.

The following procedure should be used to bleed air from the power steering system BEFORE THE CAR IS STARTED after servicing the power steering system.

1. Fill power steering reservoir to the "FULL COLD" mark.

2. Raise front end of vehicle so that front wheels are off of the floor.

3. Turn the steering wheel back and forth several times from stop-to-stop.

4. Inspect the power steering fluid in the reservoir. If bubbles or foam appear, allow vehicle to sit until all bubbles have disappeared from the fluid.

5. Repeat steps 3 and 4 until no air appears in the fluid.

6. Lower car and check fluid level. Start engine and inspect for leakage and noise.