Bravada V6-262 4.3L VIN Z (1991)
Suspension Strut / Shock Absorber: All Technical Service Bulletins
C/V Boot, Inner - Contacts Front Shock
NUMBER:
91-T-161
CORP.REF.NO.: 164301 R
DATE:
July 1991
SECTION:
4C
SUBJECT
AXLE INNER C/V BOOT CONTACTS FRONT SHOCK
INSPECT SHOCKS/AXLE, INSTALL SMALLER PROFILE BOOT
MODELS/YEARS
1991 BRAVADA
Some 1991 Bravadas may exhibit a condition where the front axle tri-pot seals (commonly referred to as the Inner C/V boots) are 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 the installation of smaller profile tri-pot seals.
SERVICE PROCEDURE: The following items should be checked and verified to provide the greatest amount of clearance for the tri-pot seals.
^
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 diameier must measure 50.4 mm (1.98") or less.
^
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.
Figure 16
If the contact between the tri-pot 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 this condition refer to Figure 16 and follow the procedure below.
1.
Loosen bolts (90) attaching the axle tube bracket (5) to the frame bracket (6).
2.
Tighten nuts (94) to 75 N-m (55 lbs.ft.). This should cause the axle assembly to move toward the driver's side approximately 1/8" to 1/4". If the
axle does not move it may pried toward the driver's side with a bar. Position bar against the frame and the end of the shaft (1).
3.
Tighten bolts (90) to 75 N-m (55 lbs.ft.).
