RACK AND PINION LEAK DIAGNOSIS SERVICE MANUAL REVISION

The following diagnosis revises the rack and pinion portion of Rack & Pinion and Pump Leak Diagnosis found on page 3-11 in the 1982 Celebrity and Citation Shop Manual and page 3-6 in the 1983 "A" and "X" Shop Manual (see illustration on page 2).

1. Torque fitting to 27 N.m (20 lbs. ft.). If leakage persists, replace "O" ring seal. If leakage is due to damaged threads, repair fitting nut or replace line as required. If housing threads are badly damaged, replace housing.

2. Replace dust and stub shaft seals.

3. If leakage is observed between torsion bar and stub shaft, replace the valve assembly.

4. If leakage is observed at driver side and is not affected by the direction of turn, replace pinion shaft seal.

5. If leakage is observed at the housing end and spurts when bottomed in left turn, replace inner rack seal.

6. If leakage is observed in this area of the housing, replace the inner rack seal.

7. If leakage is observed at passenger side, it is necessary to remove bulkhead and replace both "O" ring seals and lip seal.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.