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CONDITION POSSIBLE CAUSES CORRECTION NOISY OPERATION IN 1. Overdrive Clutch Discs, Plates or 1. Remove unit and rebuild clutch pack. 2. Overdrive Piston or Planetary Thrust 2. Remove and disassemble unit. Replace 3. Output Shaft Bearings Scored/ 3. Remove and disassemble unit. Replace 4. Planetary Gears Worn/Chipped. 4. Remove and overhaul overdrive unit. 5. Overdrive Unit Overrunning Clutch 5. Remove and overhaul overdrive unit. STANDARD PROCEDURE - ALUMINUM THREAD REPAIR Damaged or worn threads in the aluminum transmission case and valve body can be repaired by the use of Heli- Heli-Coil™, or equivalent, tools and inserts are readily available from most automotive parts suppliers. REMOVAL NOTE: The overdrive unit can be removed and serviced separately. It is not necessary to remove the entire 1. Disconnect battery negative cable. 2. Raise vehicle. 3. Remove the transfer case skid plate (2), if equipped. 21 - 992 AUTOMATIC TRANSMISSION - 48RE - SERVICE INFORMATION DR/DH |