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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transmission - 6T40 - Description And Operation) >> Description and Operation >> Drive Range, Sixth Gear (Gen 2/Hybrid) >> 2-6 Clutch Applies

2-6 Clutch Applies

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2-6 Pressure Control (PC) Solenoid 

The 2-6 PC solenoid is commanded ON, allowing actuator feed limit fluid to enter the PCS 2-6 clutch fluid circuit. PCS 2-6 clutch fluid is then routed through orifice #24 to the 2-6 clutch regulator valve.

2-6 Clutch Regulator Valve 

PCS 2-6 clutch fluid, at the 2-6 clutch regulator valve, opposes 2-6 clutch regulator valve spring force and orificed 2-6 clutch fluid pressure to regulate drive fluid pressure into the 2-6 clutch circuit. 2-6 clutch fluid is then routed through orifice #22 to the 2-6 clutch assembly in the transmission case, and through orifice #4 to the spring end of the 2-6 clutch regulator valve.

2-6 Clutch 

The 2-6 clutch fluid from the 2-6 clutch regulator valve is routed through the transmission case to the 2-6 clutch piston assembly. The 2-6 clutch fluid pressure moves the piston against 2-6 clutch spring force to apply the 2-6 clutch plates.

Accumulator 

PCS 2-6 clutch fluid is also routed to an accumulator valve. The accumulator valve is used to dampen any pressure irregularities occurring in the PCS 2-6 clutch fluid circuit. This helps to control clutch apply fluid pressure and clutch apply feel.