Fluid Pressure Directed in Preparation for a Shift

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

Manual Valve

Mechanically controlled by the gear selector lever, the manual valve is in the Park (P) position and prevents line pressure from the pressure regulator valve from entering the reverse and drive fluid circuits.

Actuator Feed Limit Valve

Line pressure is regulated through the valve into the actuator feed limit circuit. Actuator feed limit fluid passes through orifice #10 to a differential area to move the valve against actuator feed limit valve spring pressure. Actuator feed limit fluid is routed to the pressure control solenoids, the shift solenoid, and to the #5 and #6 ball check valves.

Compensator Feed Regulator Valve

Line pressure is regulated through the valve into the compensator feed fluid circuit. Compensator feed fluid pressure is routed through orifice #30 to the 3-5-reverse clutch regulator valve, and also fills the 3-5-reverse clutch and 4-5-6 clutch piston dam areas.

3-5-Reverse Clutch Regulator Valve

35 reverse clutch feed/compensator feed fluid is routed through the valve into the 35 reverse clutch fluid circuit. 35 reverse clutch fluid passes through orifice #6 to assist spring pressure in keeping the valve open. 35 reverse clutch fluid is routed to the 3-5-reverse clutch, and through orifice #33 to the #6 ball check valve.

3-5-Reverse Clutch Assembly

35 reverse clutch fluid fills the 3-5-reverse clutch piston apply cavity in preparation for a shift to Reverse range. However, in Park range, 35 reverse clutch pressure is limited to compensator feed pressure of 9 PSI and is not strong enough to apply the clutch.

TCC Regulated Apply Valve

Shift solenoid fluid is routed to the TCC regulated apply valve and moves the valve against TCC regulated apply valve spring force.