Check the tooth contact pattern to diagnose or after installing and adjusting a new ring and pinion gearset.
Ring and pinion gear contact pattern.
See manufacturer or the gearset for exact specifications and special instructions before attempting to adjust the ring and pinion.
Move the ring gear closer to the pinion decrease backlash while maintaining minimum backlash.
Ring and pinion gear pattern interpretation adjustment.
Use gear marking compound to paint all of the ring gear.
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.
Pinion mounting distance pmd adjustment on a face milled or 5 cut gear as pmd increases shim thickness decreases the pattern shifts toward the top face and towards the heel on the drive side and towards the toe on the coast side.
Toe contact pattern is concentrated off the toe end of the drive gear tooth.
Begin by setting proper pinion bearing preload total turning preload and ring gear 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.
This chart illustrates different patterns and adjustments.
2 cut face hobbed ring and pinion contact pattern summary.
Move the ring gear away from the pinion increase backlash while maintaining minimum backlash.
The heel of the gear tooth is the portion of.