How do you perform a ring gear tooth contact pattern?

Load the ring gear and run a full contact pattern check. Observe all gear teeth for proper contact pattern and a uniform pattern from tooth to tooth. The contact pattern on the drive side (convex) of the tooth is mostly towards the toe. Correction: Move the pinion gear closer to the ring gear.

How do I increase my ring gear backlash?

If using shims: Adding shims on the ring-gear’s smooth side of the carrier moves the ring-gear closer to the pinion, causing the teeth to mesh tighter, decreasing the amount the backlash. Adding shims on the other side moves the ring-gear teeth away from the pinion, increasing backlash.

Does pinion depth change backlash?

Increasing pinion depth also decreases backlash and moves drive pattern slightly towards toe, and coast pattern slightly towards the heel. Decreasing pinion depth also increases backlash and moves the drive pattern slightly towards the heel, and the coast pattern slightly towards the toe.

What does a good ring and pinion pattern look like?

PATTERN INTERPRETATION (RING GEAR) The drive pattern should be centered on the tooth. The coast pattern should be centered on the tooth, but may be slightly toward the toe. There should be some clearance between the pattern and the top of the tooth. Backlash correct.

How can I improve my backlash?

Backlash adjustment can be made by adjusting nuts or by moving shims from one side to the other. To increase backlash, move the ring gear away from the pinion gear. To decrease backlash, move the ring gear towards the pinion gear.

How do I know if my pinion gear is bad?

Regular “clunking” or loud “clicking” every few feet may indicate a broken ring or pinion gear tooth. “Banging, clicking or clunking” while cornering can be caused by broken cornering gears commonly called “spider gears”, lack of sufficient positraction lubrication, or worn positraction clutches.

Will decreasing backlash change my gear contact pattern?

(1) Decreasing backlash moves the ring gear closer to the pinion. Drive pattern (convex side of gear) moves slightly lower and toward the toe. Drive pattern moves deeper on the tooth (flank contact) and slightly toward the toe. Coast pattern moves deeper on the tooth and toward the heel.

How do you get gear backlash?

Turn the adjustment knob on the side of the dial indicator gauge until the gauge needle points to the “0” setting. Rock the ring gear back and forth with your hand while monitoring the gauge needle. The distance indicated on the gauge is the gear backlash.