Removal of Accumulator Pistons on 1982 Volvo 240
Accumulator: Service and Repair
Accumulator Pistons Installation
1. BW55 accumulator pistons. Pistons have been modified on several occasions.
Type 1, To Reduce Scoring:
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outer bore reduced
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larger grooves for 0-rings
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new type 0-rings
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increased bevel on pistons.
NOTE: Pistons can be fitted to all type BW55 transmissions.
Type 2, To Improve Oil Flow
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Accumulator piston C1 modified to improve oil flow to front clutch C1.
