Electra Park Avenue V6-231 3.8L VIN C SFI (1989)
Steering Gear: All Technical Service Bulletins
Steering - External Fluid Leaks From Gear
Bulletin 89-3-25
Date Dec., '89
Ref. No.
89-207A-3
Corp. Ref. No. 903003R
SUBJECT:
POWER RACK AND PINION STEERING GEAR FLUID LEAKS
MODELS AFFECTED:
1989 CENTURY, REGAL, LESABRE, ELECTRA/PARK AVENUE, RIVIERA AND REATTA
A number of changes to the end take off steering gear have been made during the 1989 model year to address external leaks. These changes are detailed
below:
^
A new high temperature inner rack seal was introduced on all series except Regal in January, 1989. Regal started with this design in the 1988
model.
^
Enhanced assembly installation of the outer bulk head seals to reduce seal damage, implemented in March, 1989.
^
Drive screw sealing method changed in May, 1989, to reduce possibility of water entry and rack corrosion in seal areas.
^
Redesigned boot clamps for enhanced sealing at gear in November, 1988, to reduce possibility of water entry in seal areas.
^
Increased rack surface finish in seal areas to reduce leak potential.
^
Saginaw Division and its vendors are involved in various ongoing quality enhancement programs.
HOW TO ADDRESS FLUID LEAKS
If a customer has commented about having to add fluid and/or external leakage of power steering fluid, and a substantial amount of fluid is in the boot(s),
then the steering gear should be replaced.
If fluid has not accumulated in the boot(s), other causes for the leakage must be determined and corrected. Refer to the recently released video and
technical guide furnished to all dealers on the "Rack and Pinion Steering Systems" for diagnostic assistance. Some leak causes to check for are:
^
Hoses, lines and connections -- check for proper routing, assembly and torque -- replace hose or line assembly, correct torque, or replace line
O-ring and correct torque as required.
^
Rotary valve seal for leak - install bearing assembly service kit with seal. Refer to Service Bulletin 89-3-17.
^
Pump and/or reservoir areas for leaks - replace appropriate failed part.
^
Gear housing for porosity - replace gear.
