Pressure Regulator Valve

NO.2 PRESSURE REGULATOR VALVE
This adjusts the hydraulic pressure operating on the center differential control clutch according to the throttle opening angle and shift position in order to provide clutch operation pressure suited to the driving conditions.
- Operation in D, 2 range.
Throttle modulator pressure acts on the lower part of the No.2 pressure regulator valve and the line pressure is adjusted to a pressure corresponding to the throttle valve opening angle. Accordingly, the center differential control clutch operates at a pressure corresponding to the throttle valve opening angle.




- Operation in L range.
When the shift lever is shifted into L range, the line pressure acts between plungers (A) and (B), and plunger (A) and No.2 pressure regulator valve are pushed up. Thus pressure adjustment does not occur at No.2 pressure regulator valve and the line pressure acts directly on the center differential clutch to provide strong operation pressure.




- Operation in R range
When the shift lever is shifted into R range, the line pressure acts on the lower part of plunger (B); plunger (A) and (B) and No.2 pressure regulator valve are pushed up. Thus pressure adjustment does not occur at No.2 pressure regulator valve and the line pressure acts directly on the center differential clutch to provide strong operation pressure.