Bench Torque Test

1. Prior to installation of the locking differential into a vehicle, a bench torque check must be made. With Traction-Lok Torque Tool T59L-4204-A check the torque required to rotate one differential side gear while the other is held stationary. The initial breakaway torque, if original clutch plates are used, should be no less than 27 Nm (20 ft. lbs.). The rotating torque required to keep the differential side gear turning with new clutch plates may fluctuate, with initial breakaway torque at least 27 Nm (20 ft. lbs.).
2. Lightly coat lock bolt threads with Threadlock and Sealer EOAZ-19554-AA or equivalent meeting Ford specification WSK-M2G315-A5. Install lock bolt in differential case and tighten to 20-40 Nm (15-30 ft. lbs.).
3. Clean the tapped holes in the ring gear and pinion with a suitable solvent. If the new bolts show a green coating over approximately 12.7 mm (1/2 inch) of the threaded area, use as is. If not coated, apply a small amount of Threadlock and Sealer EOAZ-19554-AA or equivalent meeting Ford specification WSK-M2G315-A5. Tighten to 95-115 Nm (70-85 ft. lbs.).