Liberty 2WD V6-3.7L (2008)
Valve Body: Description and Operation
Operation
OPERATION
NOTE: See: Diagrams for a visual aid in determining valve location, operation and design.
THERMAL VALVE
The thermal valve (1) is a bi-metallic shudder valve that helps control the venting rate of oil pressure in the underdrive clutch passage during release of
the clutch. When the oil temperature is approximately 20 degrees Fahrenheit or less, the valve is fully open to assist in venting oil past the U1 orifice (2).
At temperatures above 20 degrees, the valve starts to close and becomes fully closed at approximately 140 degrees. The thermal valve is located in the
transfer plate of the valve body.
REGULATOR VALVE
The regulator valve (9) controls hydraulic pressure in the transmission. It receives unregulated pressure from the pump (6), which works against spring
tension (8) to maintain oil at specific pressures. A system of sleeves and ports allows the regulator valve to work at one of three predetermined pressure
levels. Regulated oil pressure is also referred to as "line pressure."
SOLENOID SWITCH VALVE
