S15/T15 4WD Jimmy V6-173 2.8L (1988)
Suspension Strut / Shock Absorber: All Technical Service Bulletins
C/V Boots (Inner) - Contact Shock Absorbers
GMC NUMBER:
91-4C-108
GROUP:
4C Front Axle
DATE:
June, 1991
CORPORATE
NUMBER:
164301R
SUBJECT:
FRONT AXLE, INNER C/V BOOTS (TRIPOT SEALS) CONTACT FRONT SHOCK ABSORBERS
MODELS:
1985-91 T TRUCKS
Some 1985-91 T trucks may experience a condition of the front axle tripot seals (commonly referred to as the inner C/V boots) contacting the front
shock absorbers. This contact usually occurs during suspension operation and may be evidenced as torn seals, premature wear on the outer edges of the
seal convolutes or grooves worn into the body of the shock absorber. This condition can be relieved by correcting problems with shock absorber or axle
installation and installing smaller profile tripot seals.
VEHICLES INVOLVED 1985-91 T trucks.
SERVICE PROCEDURE
The following items should be checked and verified to provide the greatest amount of clearance for the tripot seals.
-
Make sure that the shock absorbers are installed correctly with the fluid reservoir on the bottom and the shield on the top.
-
If aftermarket shock absorbers have been installed, their diameter must measure 50.4 mm (1.98") or less.
-
Make sure that the output shaft retaining ring is in place. To check, pull outward on the output shaft. Outward movement should measure 5 mm
(.200") or less.
Important
DO NOT cut or relocate shock absorber mounting brackets.
If the contact between the tripot joint and shock absorber is occurring on the passenger side of the vehicle, the axle assembly may be shifted in the frame
too far toward the passenger side. To correct
Figure 16 - Carrier Assembly Installation