Automatic Transmission
System Description (cont'd)
Hydraulic Controls (cont'd)
Main Valve Body
The main valve body contains the manual valve, the modulator valve, the shift valve C, the shift valve D, the shift valve
E, the servo control valve, the cooler check valve, the torque converter check valve, the reverse CPC valve, the lock-up
shift valve, the relief valve, and the ATF pump gears. The primary function of the main valve body is to switch fluid
pressure on and off and to control hydraulic pressure going to the hydraulic control system.
SHIFT VALVE C
REVERSE CPC VALVE
MANUAL VALVE
SERVO CONTROL VALVE
Regulator Valve Body
The regulator valve body is located on the main valve body. The regulator valve body contains the regulator valve, the
lock-up timing valve, and the lock-up control valve.
REGULATOR VALVE BODY
14-44
MODULATOR VALVE
SHIFT VALVE D
SHIFT VALVE E
COOLER CHECK VALVE
TORQUE CONVERTER
CHECK VALVE
LOCK-UP TIMING VALVE
RELIEF VALVE
LOCK-UP SHIFT VALVE
MAIN VALVE BODY
REGULATOR VALVE
LOCK-UP CONTROL VALVE