Ring And Pinion Wear Pattern Chart

Moving the ring gear away from the pinion increases backlash and causes the pattern to move out toward the heel of the ring gear.

Ring and pinion wear pattern chart.

Ring and pinion gear pattern is one of the most valuable tools for determining if a differential is properly set up. When the pinion is too far in towards the ring gear the pattern is low toward the base of the gear teeth. This pattern indicates excessive pinion depth. Use gear marking compound to paint all of the ring gear teeth.

The ring gear is too far in toward the pinion. You should see the wear pattern closer to the toe of the tooth with most gear sets. Ring and pinion gear pattern interpretation adjustment. Teeth on the gear set are excessively worn chipped or broken.

The images below illustrate both acceptable and unacceptable ring and pinion gear patterns. 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. Proper ring gear to pinion gear contact pattern is critical for quiet and trouble free gear set operation. For more in depth information about ring and pinion gear patterns and how.

Begin by setting proper pinion bearing preload total turning preload and ring gear backlash. Move the ring gear closer to the pinion decrease backlash while maintaining minimum backlash. Ring gear and pinion tooth pattern interpretation the final pinion position will be verified by using the gear contact pattern method described as follows. Toe contact pattern is concentrated off the toe end of the drive gear tooth.