Dakota 2WD V8-4.7L VIN J (2005)
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Regulator valve(2)
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Solenoid switch valve(7)
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Manual valve(5)
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Converter clutch switch valve(6)
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Converter clutch control valve(4)
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Torque converter regulator valve(2)
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Low/Reverse switch valve(3)
In addition, the valve body also contains the thermal valve, #2, 3, 4 & 5 check balls and the 2/4 accumulator assembly.
OPERATION
NOTE: Refer to the Hydraulic Schematics 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
