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CONDITION POSSIBLE CAUSES CORRECTION NO DRIVE OR REVERSE 1. Fluid Level Low. 1. Add fluid and check for leaks if drive is 2. Gearshift Linkage/Cable Loose/ 2. Inspect, adjust and reassemble linkage as 3. U-Joint/Axle/Transfer Case Broken. 3. Perform preliminary inspection procedure 4. Filter Plugged. 4. Remove and disassemble transmission. 5. Oil Pump Damaged. 5. Perform pressure test to confirm low 6. Valve Body Malfunctioned. 6. Check and inspect valve body. Replace 7. Transmission Internal Component 7. Remove and disassemble transmission. 8. Park Sprag not Releasing - Check 8. Remove, disassemble, repair. 9. Torque Converter Damage. 9. Inspect and replace as required. SHIFTS DELAYED OR 1. Fluid Level Low/High. 1. Correct fluid level and check for leaks if 2. Fluid Filter Clogged. 2. Replace filter. If filter and fluid contained 3. Throttle Linkage Mis-adjusted. V-10 3. Adjust linkage as described in service 4. Throttle Linkage Binding. V-10 Only 4. Check cable for binding. Check for return 5. Gearshift Linkage/Cable Mis- 5. Adjust linkage/cable as described in service 6. Clutch or Servo Failure. 6. Remove valve body and air test clutch, and 7. Governor Circuit Electrical Fault. 7. Test using DRB T scan tool and repair as required. 8. Front Band Mis-adjusted. 8. Adjust band. 9. Pump Suction Passage Leak. 9. Check for excessive foam on dipstick after 21 - 984 AUTOMATIC TRANSMISSION - 48RE - SERVICE INFORMATION DR/DH |