RAM 2500 Van V8-5.9L VIN Z LDC (2000)
pressure blocked, there is less area for pressure to act on to balance the force of the spring on the right. This allows line pressure to push the valve
train to the right, reducing the amount of fluid returned to the pump's inlet, increasing line pressure.
KICKDOWN VALVE
Fig. 26
When the throttle valve is as far over to the left as it can go, the maximum line pressure possible will enter the throttle pressure circuit. In this case,
throttle pressure will equal line pressure. With the kickdown valve (Fig. 26) pushed into the bore as far as it will go, fluid initially flows through the
annular groove of the 2-3 shift valve (which will be in the direct drive position to the right).
After passing the annular groove, the fluid is routed to the spring end of the 2-3 shift valve. Fluid pressure reacting on the area of land #1 overcomes
governor pressure, downshifting the 2-3 shift valve into the kickdown, or second gear stage of operation. The valve is held in the kickdown position by
throttle pressure routed from a seated check ball (#2). Again, if vehicle speed is low enough, throttle pressure will also push the 1-2 shift valve left to
seat its governor plug, and downshift to drive breakaway.
KICKDOWN LIMIT VALVE
Fig. 27
