1 - 2 - 7 - 8 Reverse Clutch Applies

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1 - 2 - 7 - 8 Reverse Control Solenoid Valve Assembly

The 1-2-7-8 reverse control solenoid is energized (HIGH) allowing actuator feed fluid to enter the S1 VFS SIG fluid circuit which applies fluid pressure against the S1 VFS ACCUM spring force and against the 1278R control valve spring force. This allows line fluid to pass through into the 1278R CLUTCH fluid circuit.

1 - 2 - 7 - 8 Reverse Clutch Assembly

1278R CLU fluid is routed to the 1278 reverse clutch piston to hold the piston against spring force which holds the 1278R clutch plates.

#14 Ball Check Valve

Line fluid travels through the 1278R control valve orifice #40 into the 1278R CLU FDBK fluid circuit and into the #14 ball check valve unseating the ball allowing fluid into the ACT FEED circuit.