Operation CHARM: Car repair manuals for everyone.

Test

1. Wipe oil out of carrier and carefully clean each tooth of the ring gear.
2. Apply gear marking compound sparingly to all ring gear teeth using a medium stiff brush. When properly used, the area of pinion tooth contact will be visible when hand load is applied.
3. Using a torque: wrench, apply a load until a torque of 62 Nm (45 ft. lbs.) is required to turn the pinion.
- A test made without loading the gears will not give a satisfactory pattern. Turn the companion flange with a wrench so that the ring gear rotates one full revolution then reverse the rotation so that the ring gear rotates one revolution in the opposite direction. Excessive turning of the ring gear is not recommended.











4. Observe the pattern on the ring gear teeth and compare with the figures.