Ring And Pinion Contact Pattern Chart

Use gear marking compound to paint all of the ring gear.

Ring and pinion contact pattern chart.

Check the tooth contact pattern to diagnose or after installing and adjusting a new ring and pinion gearset. Begin by setting proper pinion bearing preload total turning preload and ring gear backlash. Ring gear contact pattern interpretation of face hobbed uniform tooth depth gear teeth proper ring gear to pinion gear contact pattern is critical for quiet and trouble free gear set operation. Ring gear tooth profile face hobbing face milling the toe of the gear is the portion of the tooth surface at the end towards the center.

Toe contact pattern is concentrated off the toe end of the drive gear tooth. See manufacturer or the gearset for exact specifications and special instructions before attempting to adjust the ring and pinion. Ring and pinion gear pattern interpretation adjustment. Ring and pinion gear pattern is one of the most valuable tools for determining if a differential is properly set up.

This chart illustrates different patterns and adjustments. Move the ring gear away from the pinion increase backlash while maintaining minimum backlash. 2 cut face hobbed ring and pinion contact pattern summary. Gear contact patterns interpretation adjustment guide.

The images below illustrate both acceptable and unacceptable ring and pinion gear patterns.