Accumulator Assembly, Spacer Plate, and Gaskets. Buick Roadmaster 1996

For 1990-2009 cars

### Removal Procedure

1. Remove the oil pan and filter. Refer to Automatic Transmission Fluid and Filter Replacement .
2. Remove the bolts attaching the cover and pin to the transmission case.
3. Remove the cover and pin.
4. Remove the piston, ring, and springs. The piston and ring may remain inside the cover and pin.
5. Remove the control valve, if replacing the 3-4 accumulator. Refer to Control Valve Assembly .
6. Remove the spring, piston, ring, and pin.
7. Inspect the accumulators. Refer to Control Valve Body and Pressure Switch (Accumulator Disassembly).

### Installation Procedure

1. Install the spring, piston, ring, and pin.
2. Install the control valve, if removed. Refer to Control Valve Body and Pressure Switch .
3. Install the springs, ring, and piston.
4. Install the cover and pin.
5. Install the bolts attaching the cover and pin to the transmission case.

Tighten
Tighten the bolts to 11 N·m (97 lb in)

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

6. Install the oil pan and filter. Refer to Automatic Transmission Fluid and Filter Replacement .