Hybrid Direct, 2-3-4 Clutch Applies

WARNING: This page is about a different variant/trim than selected.

Pressure Control (PC) Solenoid 2 Trim

The PC solenoid 2 trim is energized (ON) allowing actuator feed limit fluid to enter the PCS 2 signal circuit. PCS 2 signal fluid is then routed through orifice #38 to the hybrid direct, 2-3-4 clutch regulator valve.

Hybrid Direct, 2-3-4 Clutch Regulator Valve

PCS 2 signal fluid, at the hybrid direct, 2-3-4 clutch regulator valve, opposes hybrid direct, 2-3-4 clutch regulator valve spring force and HD 234 clutch feedback fluid pressure to regulate line or auxiliary line pressure into the HD 234 clutch/B cooling feed circuit.

#1 Encapsulated Ball Check Valve

HD 234 clutch feedback fluid unseats the #1 ball check valve, allowing excess pressure to pass into the actuator feed limit circuit. This helps to control clutch apply fluid pressure and clutch apply feel.

Shift Solenoid Valve - Mode A

HD 234 clutch/B cooling feed fluid passes through the shift solenoid valve - mode A into the HD 234 clutch supply fluid circuit and is routed to the shift solenoid valve - mode B.

Shift Solenoid Valve - Mode B

HD 234 clutch supply fluid passes through the shift solenoid valve - mode B into the HD 234 clutch circuit and is routed to the hybrid direct 2-3-4 clutch assembly.

Hybrid Direct, 2-3-4 Clutch Assembly

HD 234 clutch fluid is directed to the hybrid direct, 2-3-4 clutch piston to apply the hybrid direct, 2-3-4 clutch plates and achieve second gear.