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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 52 (Transfer Case - NVG 149-NP3 - Overhaul) >> Repair Instructions >> Cleaning and Inspection >> Rear Output Shaft

Rear Output Shaft

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  1. Clean the rear output shaft in cleaning solvent.
  2. Inspect the mainshaft rear bushing (1) in the rear output shaft for the following conditions:
    • Scoring
    • Pitting
    • Excessive wear
    Fig 1: Rear Output Shaft Inspection Areas
    GM805644Courtesy of GENERAL MOTORS CORP.
  3. Inspect the rear output shaft splines (3) for damage or excessive wear. Witness marks at the location of the gears are normal.
  4. Inspect the rear output shaft planetary gear (2) for the following conditions:
    • Chipped teeth
    • Broken teeth
    • Excessively worn teeth
  5. Replace the rear output shaft if any of the above conditions are found.