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Starting System: Overhaul: Disassembly

  1. Disconnect field lead attaching nut from solenoid terminal. See Fig 1 for reference.
    Fig 1: Exploded View Of Start Starter Motor
    G00092200Courtesy of GENERAL MOTORS CORP.
  2. Remove through bolts.
  3. Remove screws and commutator end frame from motor assembly (brush assembly and bearing remain on armature).
    WARNING: Magnets in frame have strong attraction to armature. Keep fingers clear of pinch points to avoid personal injury.
  4. Remove armature from field and frame.
  5. Remove frame and shield from drive end housing assembly.
  6. Use J 28509-A or equivalent to pull bearing from armature. The bearing is press fit over shaft.
    NOTE: Before removing brush holder assembly, lift each brush spring and rest against side of brush; this prevents brush damage when brush holder assembly is pulled off of armature.
  7. Remove brush holder assembly from armature.
  8. Slightly separate gear and drive assembly from drive end frame and use screwdriver to pry `plastic' shift lever fingers off shift collar pins on drive.
  9. Remove shaft and gear assembly and drive assembly from housing.
  10. Remove thrust collar from armature shaft, then slide deep socket over shaft, tap socket to drive pinion stop collar off retainer ring.
  11. Remove retainer ring and drive assembly from shaft.
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