Shop Manual

20-43
Main Pressure Control Valve
Function
 The main pressure control valve
regulates the oil pressure flowed to
the clutch loop and solenoid valve
loop and distributes the oil flow
between the clutch loop and torque
converter.
Operation
1. The oil comes from the oil pump
enters into the main pressure control
valve, the oil will pass through the port
A and port B and flow to the shift
valve when the oil pressure is lower
than the specified pressure of main
pressure control valve (1).
2. If the oil pressure is higher than the
specified value, the oil passing through
the throttle port c and d of main
pressure control valve (1) will push the
valve cartridge (1) to left and release
the oil to port E and keep the pressure
under specified value. The oil releases
from port E will flows to torque
converter.