LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1995 >> Forward Control 4.3 Z, Standard >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission Overhaul - 4L80-E >> Transmission Reassembly >> Center Support & Rear Gear Unit

Center Support & Rear Gear Unit

  1. Install rear band and thrust washer. Ensure band anchor pins engage band, and band assembly stop is in place. Install proper selective thrust washer. See Fig 1. Install rear case snap ring. Install snap ring groove into case, with snap ring opening at 9 o'clock position. See Figure.
  2. Using Gear Assembly Remover/Installer (J-38868), Adapter (J-21364-A) and Slide Hammer Handle (J-6125-B), install gear assembly. See Fig 4.
  3. Install upper center support snap ring with flat side down and opening at 9 o'clock position. Using Dial Indicator (J-8001), check rear unit end play. See Figure. Rear unit end play should be .005-.025" (.13-.63 mm).
  4. If rear unit end play is not correct, select proper size thrust washer. See REAR END PLAY THRUST WASHER  table. If necessary, remove center support and rear unit to change selective thrust washer.
  5. Using Center Support Aligner (J-23093), push center support splines counterclockwise against case splines (away from rear servo). Align center support with bolt hole. Using NEW bolt, install center support bolt. See Fig 3. Tighten bolt to 32 ft. lbs. (43 N.m).
REAR END PLAY THRUST WASHER

Identification Thickness
No. 1 .074-.078" (1.88-1.98 mm)
No. 2 (Side Of Tab) .082-.086" (2.08-2.18 mm)
No. 3 (Side Of Tab) .090-.094" (2.29-2.39 mm)
No. 4 (End Of Tab) .098-.102" (2.49-2.59 mm)
No. 5 (End Of Tab) .106-.110" (2.69-2.79 mm)
No. 6 (End Of Tab) .114-.118" (2.89-3.00 mm)
Fig 1: Installing Rear Band & Selective Thrust Washer
G92C13856Courtesy of GENERAL MOTORS CORP.
Fig 2: Exploded View Of Hydra-Matic 4L80-E Valve Body Assembly
G96B04466Courtesy of GENERAL MOTORS CORP.
Fig 3: Installing Center Support & 4th Clutch Bolts
G92E13858Courtesy of GENERAL MOTORS CORP.
Fig 4: Installing Center Support & Gear Unit
G92D13857Courtesy of GENERAL MOTORS CORP.