Skylark V6-173 2.8L VIN W FI (1985)
Power Steering Pump: Technical Service Bulletins
P/S - Submerged Style Pump Square Cut Seal Change
Bulletin
85-3-14
Date
Feb. '85
Ref.No.
85-145-3
SUBJECT:
POWER STEERING SUBMERGED STYLE PUMP O-RING CHANGE
MODELS AFFECTED: 1985 MODELS
Power steering pumps on some 1985 models have revised "square cut" seals which provides the seal between the reservoir and the housing at the
reservoir mounting bolt hole(s) and at the pressure line fitting. This change is effective with early 1985 production on all submerged pump assemblies.
The new seal is approximately twice as thick as the old one and requires a deeper counterbore in the housing.. Consequently, new seals will not fit the
old housings and old seals will not provide an adequate repair when used with the new housing. The new housing will be the only one provided for
service from GMWDD. Both old and new seals will be provided in each appropriate reservoir kit and in a new seal service kit, part no. 7848522 which
will replace the present kit, part no. 5688044.
SEAL SELECTION
These kits will contain an instruction sheet which shows the method of identifying the new housing, and shows the difference between the new and old
seal. See Figure.
