Limited Slip Axle Operation - Borg Warner 4 Pinion Differential

On all models, improper operation is often indicated by clutch slipping or grabbing which produces a whirring or chattering noise. These noises do not always indicate an axle failure but could be from lack of proper lubrication or normal noise when axle clutches are engaged during certain road conditions. Since the operational life of the limited slip unit is dependent on equal rotation of the wheels while driving straight ahead, it is important that there is no major difference in rear wheel tire size, air pressure or wear pattern, otherwise the vehicle may swerve during acceleration. If improper limited slip differential problems are not caused by the above, check for proper operation as follows:


1. With automatic transmission in park and manual transmission in gear, raise rear of vehicle until one rear tire is off the ground.
2. Remove the rear tire and wheel assembly, then attach side hammer assembly tool No. J-2619-01 and axle shaft remover tool No. J-21579 to axle shaft flange and then a 1/2 inch-13 bolt into adapter.
3. Raise the other tire off the ground and attach torque wrench to side hammer assembly tool No. J-2619-01, then measure torque required to rotate axle shaft. If torque reading is less than 48 ft. lbs., remove and repair the differential unit.