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REAR DRIVE AXLE 3D-15 Inspection of Ring Gear Tooth Contact Pattern Normal Contact Apply gear-marking compound (prussian blue / red lead) on Abnormal Contact Tooth Contact pattern Possible Cause Remedy 1. Heel Contact 2. Toe Contact 3. Face Contact 4. Flank Contact Insufficient backlash (little) l Tooth can be damaged Excessive backlash (much) l Drive pinion shaft is apart l Noise can be occurred Insufficient backlash (much) l Gear contacts on the low l Gear can be damaged or l Noise can be occurred Adjust backlash(Decrease backlash) l Select proper shim(s) to move the Adjust backlash(Increase backlash) l Select proper shim(s) to move the Adjust backlash(Increase pinion shim) l Move the drive pinion toward the ring Adjust backlash(Decrease pinion shim) l Move the ring gear toward the drive Excessive backlash (little) l Noise can be occurred |