1-2 Accumulator

The 1-2 accumulator charges the rear servo accumulator in 1st gear in preparation for the apply of the intermediate clutch on the 1-2 shift.

On most models the valve train consists of a 1-2 accumulator valve and 2 springs. The 1-2 accumulator oil pressure controls application of the intermediate clutch to obtain smooth shifts.

On other models the valve train consists of a 1-2 primary valve and
spring, a 1-2 accumulator valve, spring and plug. The 1-2 accumulator oil pressure is a two-step pressure to obtain greater flexibility in obtaining the desired curve for various engine requirements.