1-2-3-4 Clutch Applies

1-2-3-4 Pressure Control Solenoid 5 

The 1-2-3-4 pressure control Solenoid 5 is commanded ON allowing actuator feed limit to enter the PCS 1-2-3-4 clutch fluid circuit. PCS 1-2-3-4 clutch fluid is then routed through orifice #27 to the 1-2-3-4 clutch regulator valve. PCS 1-2-3-4 clutch fluid is also routed through orifice #29 and then to the 1-2-3-4 clutch boost valve.

1-2-3-4 Clutch Regulator Valve 

PCS 1-2-3-4 clutch fluid moves the 1-2-3-4 clutch regulator valve against 1-2-3-4 clutch regulator valve spring force to allow 1-2-3-4 clutch feed fluid to pass through the valve and enter the 1-2-3-4 clutch fluid circuit. The 1-2-3-4 clutch fluid is then routed to the 1-2-3-4 clutch boost valve and the 1-2-3-4 clutch.

1-2-3-4 Clutch Boost Valve 

PCS 1-2-3-4 clutch fluid pressure acts on a differential area moving the 1-2-3-4 clutch boost valve against the 1-2-3-4 clutch boost valve spring. The 1-2-3-4 clutch fluid passes through the valve and enters the 1-2-3-4 clutch feedback circuit. As PCS 1-2-3-4 clutch fluid pressure is increased to a given value, the 1-2-3-4 clutch boost valve opens the 1-2-3-4 clutch feedback circuit to exhaust. This results in the 1-2-3-4 clutch regulator valve moving to the full feed position sending full 2-6 CL/1-2-3-4 CL feed pressure (full line pressure) to the clutch.

1-2-3-4 Clutch 

The 1-2-3-4 clutch fluid enters the 1-2-3-4 clutch to move the piston against spring force to apply the 1-2-3-4 clutch plates.