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 732 (Vibration Symptoms Diagnosis And Correction) >> Diagnostic Information and Procedures >> Hub/Axle Flange and Wheel Stud Runout Inspection

Hub/Axle Flange and Wheel Stud Runout Inspection

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required:  J 8001 Dial Indicator Set, or equivalent

  1. Raise and support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
  2. Mark the location of the wheels to the wheel studs and mark the specific vehicle position on each tire and wheel - LF, LR, RF, RR.
  3. Remove the tire and wheel assemblies from the vehicle. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION .
  4. Remove the brake rotors and/or brake drums from the vehicle. Clean the mounting surfaces of the brake rotors, the brake drums, and the hub/axle flanges of any loose debris, rust, and corrosion. Refer to the following procedures:
  5. Position the J 8001, or equivalent, on the machined surface of the wheel hub/axle flange outside of the wheel studs.
    6. Fig 1: Positioning J 8001 Outside Of Wheel Studs On Wheel Hub/Axle Flange
    G02570249Courtesy of GENERAL MOTORS CORP.
  6. Rotate the hub one complete revolution in order to find the low spot.
  7. Set the J 8001, or equivalent, to zero at the low spot.
  8. Rotate the hub one more complete revolution and measure the total amount of wheel hub/axle flange runout.

    Specification - Guideline 

    Wheel hub/axle flange runout tolerance guideline: 0.132 mm (0.005 in)

  9. If the runout of the wheel hub/axle flange IS within specification, proceed to step  12 .
  10. If the runout of the wheel hub/axle flange is marginal, the wheel hub may or may not be the source of the disturbance.
  11. If the runout of the wheel hub/axle flange is excessive, replace the wheel hub/axle flange. Measure the runout of the new wheel hub/axle flange. Refer to the appropriate procedure:
  12. Position the J 8001, or equivalent, in order to contact the wheel mounting studs. Measure the stud runout as close to the flange as possible.
    13. Fig 2: Positioning J 8001 In Contact With Wheel Mounting Studs
    G02570250Courtesy of GENERAL MOTORS CORP.
  13. Turn the hub one complete revolution to register on each of the wheel studs.
  14. Zero the J 8001, or equivalent, on the lowest stud.
  15. Rotate the hub one more complete revolution and measure the total amount of wheel stud - stud circle - runout.

    Specification - Guideline 

    Wheel stud runout tolerance guideline: 0.254 mm (0.010 in)

  16. If the runout of the wheel studs - stud circle - is marginal, the wheel studs may or may not be contributing to the disturbance.
  17. If the runout of the wheel studs - stud circle - is excessive, replace the wheel studs as necessary. Measure the runout of the new wheel studs. Refer to the appropriate procedure:
scientia non olet · About LEMON Manuals