Impreza Brighton Coupe AWD F4-2.2L SOHC (1997)
Band: Description and Operation
Band Brake
DESCRIPTION
The band brake consists of a flex type brake band, a band brake adjusting mechanism, two servo pistons, two retainers, two return springs, a stem, a
strut, and others. The band brake can be adjusted as installed on the vehicle.
OPERATION
One end of the brake band is secured to the transmission case via the brake band adjusting screw.
When no hydraulic pressure is applied to the servo piston from the hydraulic pressure controller, the servo piston and band servo piston O.D. are
forced downward by the return spring, as shown in (A).
When hydraulic pressure 2A is applied to the servo chamber (II), it causes the band servo piston to come into contact with the stepped portion of the
band servo piston stem, thereby pushing the band servo piston stem upward to state (B). Under this condition, the brake band slowly tightens the
reverse clutch drum and fixes the front sun gear of the front planetary gear. (2nd speed state).
