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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 156 (Transfer Case - BW 4485-Nr3 AWD) >> Repair Instructions >> Cleaning and Inspection >> Input Shaft

Input Shaft

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Cadillac Escalade EXT, 2007 Cadillac Escalade ESV, and 2007 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Input Shaft
    GM833016Courtesy of GENERAL MOTORS CORP.
  1. Clean the input shaft in cleaning solvent.
  2. Inspect the input seal surface (1) for excessive grooves or damage.
    3. IMPORTANT: Do not attempt to smooth any roughness in the bearing journals.
  3. Inspect the bearing journals on the input shaft for the following conditions:
    • The drive gear bushing (2)
    • The rear support bushing (4)
      • Scoring
      • Pitting
      • Brinelling
      • Excessive wear
  4. Inspect the input shaft planetary carrier assembly splines (3) for damage or excessive wear. Witness marks at the location of the gear is normal.
  5. Replace the input shaft if any of the above conditions are found.
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