RAM 1500 Truck 4WD V8-5.9L VIN Z (2002)
The metering at land #2 establishes the line pressure throughout the transmission. It is varied according to changes in throttle position and the
transmission's internal condition within a range of 57 - 94 psi (except in REVERSE) (Fig. 275). The regulated line pressure in REVERSE (Fig. 276) is
held at much higher pressures than in the other gear positions: 145 - 280 psi. The higher pressure for REVERSE is achieved by the manual valve
blocking the supply of line pressure to the reaction area left of land #4. With this 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.
