Front End - Clunking Noises
90audi06Subject: Clunking noise from front end
Model(s): 80/90 from 1988 Model Year
Group: 40
Number: 90-04
Date: September 30, 1990
Cause:
Insufficient torque of subframe and control arm bolts.
Production change:
Upgraded torquing procedure.
As of: September 1988
VIN: 89 KA054524
Service Solution:
Replace bolts/washers and torque to specification. Hole in subframe must be free of wax.
^ see procedure on next page to install the following parts:
Part No. Description
N 904 532 01 Subframe bolt
823 199 347 Subframe washer
N 903 276 01 Control arm bolt
N 011 527 8 Control arm washer
N 011 185 6 Control arm nut
CAUTION
Part numbers are for reference only. Always check with your Parts Department for latest information.
CAUTION
Always replace all bolts, washers and self-locking nuts that secure suspension components, e.g. subframe, control arms, stabilizer bar, ball joints, etc., when repairing these components.
Note
Inspect subframe for visible damage before replacing bolts.
^ remove subframe bolt and washer 1
^ remove wax from threads of nut in body with brake cleaner or carburetor cleaner
^ dry threads with compressed air
^ install new bolt and washer
^ torque to 35 N-m (25 ft.lb.)
^ repeat above steps on remaining bolts/ washers/nuts 2, 3, and 4
Note
Only remove and replace one bolt/washer at a time.
^ with vehicle weight on suspension tighten each subframe bolt an additional 1/4 turn (use a vehicle ramp or drive-on hoist)
^ check control arm bolts for tightness and replace if loose
^ torque to 65 N-m (48 ft.lb.) with vehicle weight on suspension (use a vehicle ramp or drive-on hoist)