Grand Cherokee 4WD SRT-8 V8-6.1L VIN 3 (2006)
overlap).
Command Valve
When the end face is unpressurized (stationary phase), the working pressure (p-A) is directed to the actuated shift element. If the end face of the
command valve is subjected to the shift valve pressure (p-SV) (shift phase), then the shift pressure (p-S) is switched to the activating element and the
overlap pressure (p-0) is switched to the deactivating element.
Shift Valve Holding Pressure
The holding pressure shift valve (1) is actuated by the pressures present at the end face in the actuators and a spring. It assigns the working pressure
(p-A) to the actuator with the higher pressure (taking into account the spring force and the effective surface area). The other element of the shift group
is then unpressurized. The valve switches over only during the shift phase and only at a certain pressure ratio between the overlap pressure (p-0) and
the shift pressure (p-S).
Shift Pressure Shift Valve