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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Transfer Case - BW 4473-NP3) >> Repair Instructions - Off Vehicle >> Cleaning and Inspection >> Input Shaft

Input Shaft

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Locating Inspection Areas On Input Shaft
    GM823249Courtesy of GENERAL MOTORS CORP.
  1. Clean the input shaft in cleaning solvent.
  2. Clean the input shaft oil galleries (3) and air dry.
  3. Inspect the oil scoop (2) for damage.
  4. Replace the oil scoop if it is damaged.
    5. IMPORTANT: Do not attempt to smooth any roughness in the bearing journals.
  5. Inspect the journals on the input shaft for the following conditions:
    • The input gear bushing journal (1)
    • The sun gear bushing journal (6)
    • The input gear rear support bearing journal (5)
      • Scoring
      • Pitting
      • Brinelling
      • Excessive wear
  6. Inspect the input shaft internal input splines (7) and the planetary carrier splines (4) for damage or excessive wear. Witness marks are normal.
  7. Replace the input shaft if any of the above conditions are found.
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