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Overdrive Assembly & 4TH Clutch

  1. Install 4th clutch support (without clutch plates) into transmission case. Using 40T Torx wrench, install NEW 4th clutch support bolt. See Fig 1. Tighten bolt to 17 ft. lbs. (23 N.m).
  2. Remove turbine seal sizer from turbine shaft. Install turbine shaft and overdrive assembly. See Figure. Ensure assembly is fully seated. Install 4th clutch plates (4 steel and 4 composition). Install steel plates with narrow tang "V" notch at 1 o'clock position in housing. See Fig 2. Install backing plate and snap ring. See Fig 3.
Fig 1: Installing 4th Clutch Support Bolt
G92A13862Courtesy of GENERAL MOTORS CORP.
Fig 2: Installing 4th Clutch
G92B13863Courtesy of GENERAL MOTORS CORP.
Fig 3: Installing 4th Clutch Snap Ring
G92C13864Courtesy of GENERAL MOTORS CORP.
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