RAM 2500 Truck 4WD L6-6.7L DSL Turbo VIN A (2007)
CHECK BALLS
REGULATOR VALVE
Regulator Valve in Park Position
The pressure regulator valve is needed to control the hydraulic pressure within the system and reduce the amount of heat produced in the fluid. The
pressure regulator valve is located in the valve body near the manual valve. The pressure regulator valve train controls the maximum pressure in the lines
by metering the dumping of fluid back into the sump. Regulated pressure is referred to as "line pressure."
The regulator valve has a spring on one end that pushes the valve to the left. This closes a dump (vent) that is used to lower pressure. The closing of the
dump will cause the oil pressure to increase. Oil pressure on the opposite end of the valve pushes the valve to the right, opening the dump and lowering
oil pressure. The result is spring pressure working against oil pressure to maintain the oil at specific pressures. With the engine running, fluid flows from
the pump to the pressure regulator valve, manual valve, and the interconnected circuits. As fluid is sent through passages to the regulator valve, the
pressure pushes the valve to the right against the large spring. It is also sent to the reaction areas on the left side of the throttle pressure plug and the line
pressure plug. With the gear selector in the PARK position, fluid recirculates through the regulator and manual valves back to the sump.
