42RLE Automatic Transmission (Service Information): Accumulator: Description

Fig 1: Underdrive and Overdrive Accumulators

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1 - OVERDRIVE PISTON AND SPRING

2 - UNDERDRIVE PISTON AND SPRING

The 42RLE underdrive, overdrive, low/reverse, and 2/4 clutch hydraulic circuits each contain an accumulator. An accumulator typically consists of a piston, return spring(s), and a cover or plug. The overdrive (1) and underdrive (2) accumulators are located within the transmission case, and are retained by the valve body. See Fig 1.

Fig 2: Low/Reverse Accumulator

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1 - PISTON

2 - RETURN SPRINGS

The low reverse (1) accumulator is also located within the transmission case, but the assembly is retained by a cover and a snap-ring. See Fig 2.

Fig 3: 2/4 Accumulator Assembly

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1 - VALVE BODY

2 - RETAINER PLATE

3 - DETENT SPRING

4 - RETURN SPRINGS

5 - PISTON

The 2/4 accumulator (5) is located in the valve body. It is retained by a cover and retaining screws. See Fig 3.