Thunderbird V6-232 3.8L SC (1989)
Propeller Shaft: Service and Repair
Indexing
Marking Position On Driveshaft Yoke
1. Mark one hole position on driveshaft yoke at rear of driveshaft with the letter A and the eight circular flange holes (starting with the mating hole
with driveshaft position A) from one through eight. Position A-1 is considered the original index position.
NOTE: Check U-joints for binding during first re-indexing.
2. Index driveshaft-to-axle 180 degrees to position A-5. Test drive vehicle; it unsatisfactory, evaluate position A-3 and position A-7.
3. If further improvement is desired, evaluate remaining positions that are located between the best of the two previous positions, A-3 and A-7. If
vehicle tests satisfactorily at any point during this procedure, do not proceed with any further steps. If indexing is not successful, refer to
Driveshaft Balance Diagnosis. See: Testing and Inspection
NOTE: Original equipment driveshaft-to-axle companion flange attaching bolts (N-800594-S100) are Loctite coated and do not require a
lockwasher. If these bolts are removed, they may be installed, if additional Loctite is applied. New and used bolts must be tightened to 95-129 Nm
(70-95 lb-ft).
