Throttle Valve B

Throttle Valve B

Throttle valve B converts changes in the throttle opening to changes in transmission hydraulic pressure. The end of throttle valve B contacts the throttle cam which is connected by a cable to the throttle body. The cable pulls the cam which, in turn, moves the throttle valve B. The throttle valve B-to-cam engagement is adjustable for shift smoothness and lock-up. Throttle valve B controls the accumulators to ensure smooth changes from one gear to another.

Modulator Valve

The modulator valve maintains line pressure from the regulator to the shift control solenoid valves A and B and lock-up control solenoid valves A and B, thus maintaining accurate shift and lock-up characteristics.

A 2nd orifice control valve
B From clutch pressure control valve

2nd Orifice Control Valve

For smooth shifting between 2nd and 3rd, the 2nd orifice control valve relieves the 2nd clutch pressure. As 3rd clutch pressure is increased, the 2nd orifice control valve moves to uncover the oil port relieving the 2nd clutch pressure.