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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1829 (Automatic Transmission - 5AT - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - Off Vehicle >> Main Shaft Disassemble >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Inspecting The Mainshaft For Damage
    GM1358288Courtesy of GENERAL MOTORS CORP.
  1. Inspect the mainshaft (603) for the following conditions:
    • Worn or damaged splines
    • Bearing journals for excessive wear or damage
    • Damaged threads
    • Oil passage seal grooves for nicks, scratches, or other damage
  2. Inspect the 1st/2nd/3rd drive gear (641) for the following conditions:
    • Excessive wear to the teeth
    • Chipped teeth
    • Cracked teeth
    • Looseness on the mainshaft
  3. Replace the mainshaft (603) if any of the above conditions are found.
  4. Fig 2: Inspecting 5th/Reverse Drive Gear & Components For Damage
    GM1344611Courtesy of GENERAL MOTORS CORP.
  5. Inspect the following components for wear or damage:
    • 5th/reverse drive gear and clutch hub thrust bearing (619)
    • 5th/reverse drive gear (620)
    • 5th/reverse drive gear and clutch hub inner bearing (621)
    • 5th/reverse drive gear and clutch hub thrust bearing (622)
    • 5th/reverse drive gear and clutch hub bearing race (623)
    • Mainshaft front bearing (601)
  6. Replace any faulty parts.
  7. Fig 3: Inspecting 4th Drive Gear For Damage
    GM1358289Courtesy of GENERAL MOTORS CORP.
  8. Inspect the 4th drive gear (607) for the following conditions:
    • Excessive wear to the teeth
    • Chipped teeth
    • Cracked teeth
  9. Inspect the 4th drive gear and clutch hub bearing (606) for wear or damage.
  10. Replace any faulty parts.