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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 422 (Vibration Diagnosis And Correction) >> Diagnostic Information and Procedures >> Differential Pinion Input Shaft Runout Measurement

Differential Pinion Input Shaft Runout Measurement

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools 

GE-7872  Magnetic Base Dial Indicator Set, or equivalent

NOTE:

This measurement procedure is intended to measure drive axle pinion input shaft runout for systems with a constant velocity (CV) joint, rubber coupling, bolt-on U-joint yoke, or strap style U-joint at the drive axle

  1. Place the transmission in NEUTRAL.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. If equipped with a CV joint, measure the drive axle pinion input shaft radial runout on the splined surface of the prop shaft rear CV joint housing, as close to the flange as possible:
    1. Clean the surface of the prop shaft rear CV joint housing just ahead of the torque tube input flange.
    2. Mount a dial indicator set, GE-7872  Magnetic Base Dial Indicator Set, or equivalent, and position the dial indicator to contact the prop shaft rear CV joint housing as close to the drive axle input flange as possible.
  4. If equipped with a rubber coupling or bolt-on U-joint yoke, measure the differential pinion input shaft radial runout on the machined surface of the flange pilot area:
    1. Mark the position of the prop shaft to the drive axle input flange.
    2. Separate the propeller shaft from the drive axle input flange.
    3. Clean the surface of the flange pilot area.
    4. Mount a dial indicator set, GE-7872  Magnetic Base Dial Indicator Set, or equivalent, and position the dial indicator to contact the pilot area as close to the drive axle input flange as possible.
  5. If equipped with a torque tube, measure the radial runout on the machined surface of the splined shaft:
    1. Remove the torque tube assembly from the vehicle.
    2. Clean the surface of the splined shaft.
    3. Mount a dial indicator set, GE-7872  Magnetic Base Dial Indicator Set, or equivalent, and position the dial indicator to contact the machined area as close to the end of the shaft as possible.
  6. If equipped with a strap style U-joint flange, measure the differential pinion input shaft radial runout at the propeller shaft, as close to the flange as possible:
    1. Clean the surface of the propeller shaft just ahead of the input flange.
    2. Mount a dial indicator set, GE-7872  Magnetic Base Dial Indicator Set, or equivalent, and position the dial indicator to contact a smooth area of the propeller shaft as close to the end of the shaft as possible.
  7. Rotate the drive axle input shaft by hand to locate the low spot.
  8. Set the dial indicator to zero on the low spot.
  9. Rotate the shaft by hand and record the amount of radial runout.
  10. If equipped with a constant velocity (CV) joint, rubber coupling, or bolt on U-joint yoke:
    1. Compare the runout of the shaft to the runout tolerance specifications guidelines.
    2. If the drive axle input shaft runout exceeds the specification, the flange requires replacement.
  11. If equipped with a strap style U-joint flange:
    1. Remove the propeller shaft, rotate the shaft 180 degrees, and reinstall.
    2. Rotate the drive axle input shaft by hand to locate the low spot.
    3. Set the dial indicator to zero on the low spot.
    4. Rotate the shaft by hand and record the amount of radial runout.
    5. Compare the two radial runout measurements and if the difference exceeds the axle flange runout specification, the flange requires replacement.
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