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26–05 Allison Transmission Fluid and Filter Change AT Series 1. Park the vehicle on a level surface and apply the 2. Run the engine until the transmission fluid CAUTION To prevent dirt from entering the transmission, 3. Clean the area around the drain plug. While the and drain the fluid. Disconnect the fill tube from IMPORTANT: Examine the used transmission 4. Remove the modulator retainer bolt and retainer . Remove the modulator. Remove the seal- ring from the modulator and discard the sealring. 5. Support the oil pan. Remove the twenty-one 6. Clean the oil pan with mineral spirits. 7. Remove the washer-head screw that attaches Remove the sealring from the intake tube and f260133a 1 2 3 4 5 6 10/05/94 1. Fluid Intake Tube 2. Filter Spacer 3. Internal Fluid Filter 4. Washer-Head Screw 5. Governor Pressure Tube 6. Governor Feed Tube Fig. 5, Allison AT Series Transmission Filter f260131a 1 2 3 4 10/05/94 1. Modulator 2. Modulator Sealring 3. Retainer 4. Retainer Bolt Fig. 6, Allison AT Series Transmission Modulator Transmission 26 Cargo Maintenance Manual, January 2000 26/4 |