When the gear selector lever is moved to the Reverse (R) position (from the Park position) the normally high 35R pressure control solenoid 2 is commanded ON and the following changes occur in the transmission’s hydraulic and electrical systems:

Manual Valve

With the manual valve in the reverse position, line pressure is directed into the reverse fluid circuit to the clutch select valve.

Clutch Select Valve

Shift solenoid fluid, present at the valve from Park position, continues to hold the clutch select valve against clutch select valve spring force. Reverse fluid enters the 3-5 Rev CL FD circuit and is also routed to a differential area of default override shuttle valve. R1/456 CL FD fluid, present at the valve from Park position, continues to pass through the valve in the R1 supply circuit in preparation for a shift into low or reverse gear.

#2 Ball Check Valve

3-5 Reverse fluid passes through orifice #5 and seats the #2 ball check valve against the Drive 1-6 fluid passage and fluid is forced through orifice #25 into the 35 Rev clutch regulator valve.

Clutch Select Valve

Reverse fluid from the manual valve is routed to clutch select valve to combine with clutch select valve spring force to keep the valve in the off position. This allows reverse fluid to pass through the valve and enter the 3-5 clutch reverse feed circuit. The 3-5 clutch reverse feed fluid from the clutch select valve is also routed to #2 ball check valve.

Low & Reverse Clutch

R1 supply fluid passes through the clutch select valve and enters the low and reverse clutch piston circuit and moves the piston against the spring force to apply the low and reverse clutch plates.

#2 Ball Check Valve

The 3-5 clutch reverse feed fluid seats #2 ball check valve against the drive 1-6  circuit allowing 3-5 clutch reverse feed fluid to pass through orifice #25 and enter the 3-5 reverse clutch regulator valve and fill the 3-5 reverse supply circuit.

35R Pressure Control Solenoid 2

The 35R pressure control solenoid 2 is energized (HIGH) allowing actuator feed limit fluid to enter the PCS 3-5 reverse clutch circuit. PCS 3-5  reverse clutch fluid is then routed through orifice #26 to the 3-5 reverse clutch regulator valve.

3-5 Reverse Clutch Regulator Valve

PCS 3-5 reverse clutch fluid moves the 3-5 reverse clutch regulator valve against 3-5 reverse clutch regulator valve spring force and 3-5 reverse clutch feedback fluid. This allows 3-5 reverse feed to pass through the valve and enter the 3-5 reverse clutch circuit. The 3-5 reverse clutch fluid is then routed to the 3-5 reverse clutch. The 3-5 reverse supply fluid is routed through orifice #6 to the regulator valve and to orifice #33. The 3-5 reverse feed passes through orifice #33 to the #6 ball check valve.

3-5 Reverse Clutch

The 3-5 reverse clutch fluid enters the 3-5R/456 clutch housing to move the piston against spring force and compensator feed fluid to apply the 3-5 reverse clutch plates.

#6 Ball Check Valve

#6 ball check valve is held against the seat by actuator feed limit fluid not allowing 3-5 reverse clutch fluid to pass.