Manual:HUMMER Hummer H3 Base 2010Page:20397 / 37523



Output Shaft — 2010 Hummer H3 Base, Automatic Service Manual

Output Shaft

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Output Shaft (4WD) & Output Shaft (RWD)
    GM881085Courtesy of GENERAL MOTORS CORP.
  1. Clean the 4WD (195) or the RWD (190) output shaft in a suitable solvent.
  2. Clean and air dry the oil gallery.
  3. Inspect the output shaft bearing surfaces for the following conditions:
    • Wear
    • Lack of lubricant
    • Debris embedded in the oil grooves
    • Brinelling
  4. Inspect the output shaft splines for wear or damage.
  5. Replace the output shaft if any of the above conditions are found.
    6. Fig 2: Checking Output Shaft Runout
    GM881106Courtesy of GENERAL MOTORS CORP.
  6. Using J 8001-3  or J 26900-12  (1), J 26900-13  (2) and V-blocks, inspect the output shaft for runout. See Special Tools .

    Specification:  Maximum runout: 0.06 mm (0.0024 in)

  7. If the runout exceeds the maximum, replace the output shaft.
    8. Fig 3: Measuring Output Shaft Journal Diameter
    GM881115Courtesy of GENERAL MOTORS CORP.
  8. Using a micrometer, measure the diameter of the output shaft journals.

    Specification: 

    • Minimum diameter 1st gear (a): 38.860 mm (1.5299 in)
    • Minimum diameter 2nd gear (b): 46.860 mm (1.8449 in)
    • Minimum diameter 3rd gear (c): 37.869 mm (1.4905 in)
  9. If the journal diameter is less than the minimum, replace the output shaft.
    10. Fig 4: Checking Radial Clearance Of Speed Gear
    GM881113Courtesy of GENERAL MOTORS CORP.
  10. Measure the radial clearance for each of the speed gears.
    1. Place the speed gear, with the needle roller bearing, on the output shaft at the correct journal.
    2. Use J 8001-3  or J 26900-12  (1) and J 26900-13  (2). See Special Tools .
    3. Position J 8001-3  or J 26900-12  on the gear. See Special Tools .
    4. Move the gear up and down.

      Specification: 

      • Standard Clearance 1st gear: 0.02-0.073 mm (0.0008-0.0029 in)
      • Standard Clearance 2nd and 3rd gear: 0.015-0.068 mm (0.0006-0.0027 in)
      • Maximum Clearance 1st gear: 0.160 mm (0.0063 in)
      • Maximum Clearance 2nd and 3rd gear: 0.160 mm (0.0063 in)
  11. If the clearance exceeds the maximum, replace either the gear, the needle roller bearing, or the output shaft.
    12. Fig 5: Measuring Output Shaft Flange Thickness
    GM881114Courtesy of GENERAL MOTORS CORP.
  12. Using a micrometer, measure the output shaft flange thickness.

    Specification:  Minimum thickness: 4.70 mm (0.1859 in)

  13. If the thickness is less than the minimum, replace the output shaft.