Gear Tooth Contact Pattern

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1. Wipe clean each tooth of the ring gear.
2. Apply gear marking compound to all of the ring gear teeth.
3. Verify bearing cap bolts are torque specification.
4. Apply parking brakes lightly to create at 14 N.m (10 ft. lbs.) pinion rotating torque.
5. Rotate the pinion/pinion yoke 4 full revolutions in each directions.
6. Read gear tooth contact pattern.

Gear contact pattern correct. Backlash and pinion depth is correct.

Courtesy of CHRYSLER GROUP, LLC

Ring gear too far away from pinion gear, coast side toe (1) and drive side heel (2). Decrease backlash, by moving the ring closer to the pinion gear using the adjusters.

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Ring gear too close to pinion gear, drive side toe (1) and coast side heel (2). Increase backlash, by moving the ring away from the pinion gear using the adjusters.

Courtesy of CHRYSLER GROUP, LLC

Ring gear too far away from pinion gear, drive side heel (1) and coast side heel (2). Decrease backlash, by moving the ring closer to the pinion gear using the adjusters.

Courtesy of CHRYSLER GROUP, LLC

Ring gear too close to pinion gear, drive side toe (1) coast side toe (2). Increase backlash, by moving the ring away from the pinion gear using the adjusters.

Courtesy of CHRYSLER GROUP, LLC

Pinion gear is set too low. Increase pinion gear height, by increasing the pinion depth shim thickness.

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Pinion gear is set too high. Decrease pinion depth, by decreasing the pinion depth shim thickness.