Normal case wear from piston oscillating in bore results in loss of line pressure.
Use this repair kit to fix the accumulator bore and save the case.
Common complaints with the 727, 904, 42-46-47RH/RE transmissions are soft 1-2 shifts, forward clutch failure, poor line rise and delayed forward engagement caused by a worn or scored accumulator bore in the case. Sonnax offers a kit, 22841-01K, to repair the accumulator bore. This kit is a drop-in solution and does not require any special machining.
Contact a Sonnax Parts Distributor.