3-5 Reverse Clutch Releases

3-5-R Pressure Control Solenoid 2 

The 3-5-R pressure control Solenoid 2 is commanded OFF, allowing PCS 3-5-Reverse clutch fluid from the 3-5 reverse clutch boost valve and the 3-5 reverse clutch regulator valve to exhaust through the solenoid.

3-5 Reverse Clutch Boost Valve 

The 3-5 reverse boost valve spring force moves the valve to allow 3-5-Reverse clutch feedback fluid from the 3-5 reverse clutch regulator valve to enter the 3-5-Reverse clutch fluid circuit and exhaust.

#9 Ball Check Valve 

The 4-5-6 Clutch fluid pressure seats #9 ball check valve to force fluid through orifice #39 and applies the 4-5-6 Clutch.

3-5 Reverse Clutch Regulator Valve 

The 3-5 reverse clutch regulator valve spring force moves the valve to allow 3-5-Reverse clutch fluid from the 3-5 reverse clutch to pass through the valve and enter the exhaust backfill fluid circuit. The 3-5-Reverse clutch fluid then enters the exhaust backfill fluid circuit and is routed through orifice #30 to the exhaust backfill pressure relief valve where excess pressure is exhausted.

3-5 Reverse Clutch 

The 3-5 reverse clutch spring force combined with force from the compensator move the 3-5 reverse clutch piston to release the 3-5 clutch plates and forces 3-5-Reverse clutch fluid to exhaust from 3-5 reverse/4-5-6 Clutch housing. The 3-5-Reverse clutch fluid is then routed to the 3-5 reverse clutch regulator valve and exhausted.

#4 Ball Check Valve 

The 4-5-6 Clutch fluid pressure passes through orifice #14 to seat #4 ball check valve against PS4 fluid passage. The 4-5-6 Clutch fluid is then directed into the CSV 2 latch circuit.

456 Accumulator 

The 4-5-6 Clutch fluid enters the 456 accumulator to move the piston against spring force to cushion the 4-5-6 Clutch piston apply.