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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 >> Planetary Carrier

Planetary Carrier

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    Fig 1: Inspecting Planetary Carrier For Damage
    GM823250Courtesy of GENERAL MOTORS CORP.
  1. Clean the planetary carrier in cleaning solvent. Do not disassemble the planetary carrier.
  2. Air dry, and ensure all cleaning solvent is removed from the bushings in the pinion gears (3). Do not spin the pinion gears with compressed air.
  3. Inspect the pinion gears for excessive looseness because of wear at the bushings or the shafts.
  4. Inspect the pinion gears for chipped teeth.
  5. Inspect the pinion gears for debris embedded in the root of the teeth.
  6. Inspect the planetary assembly for cracks at the web (1) of the housing.
  7. Inspect the thrust washer surface (2) for scoring or excessive wear.
  8. Replace the planetary carrier if any of the above conditions are found.
  9. Inspect the planetary carrier thrust washers for excessive wear or scoring.
  10. Replace the thrust washers if they are faulty.