LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 944 (Rear Drive Axle) >> Repair Instructions >> Gear Tooth Contact Pattern Inspection >> Adjustments Affecting Tooth Contact >> Testing Procedure

Testing Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Wipe clean the differential case, the ring gear and the axle housing of lubricant. Carefully clean each tooth of the ring gear.
  2. Use a medium stiff brush in order to sparingly apply gear marking compound, GM P/N 1052351 or equivalent, to all of the ring gear teeth.
    3. Fig 1: Sparingly Apply Gear Marking Compound To All Of Ring Gear Teeth
    G01705475Courtesy of GENERAL MOTORS CORP.
  3. Torque the bearing caps bolts to specification.
    IMPORTANT: Performing a test without loading the gears will not produce a satisfactory pattern.
  4. Apply the park brake until a torque load of 14 N.m (10 lb ft) is required in order to turn the pinion.
    IMPORTANT: Avoid turning the ring gear excessively.
  5. Using a wrench, turn the drive pinion flange/yoke so that the ring gear rotates 3 full revolutions.
  6. Turn the drive pinion flange/yoke in the opposite direction so that the ring gear rotates 3 full revolutions in the opposite direction.
  7. Observe the pattern on the ring gear teeth. Compare the pattern with the following illustrations.
scientia non olet · About LEMON Manuals