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 torque converter check valve, the reverse CPC valve, the lock-up shift valve, the lock-up
control valve, the cooler check 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.
S E R V O C O N T R O L V A L V E
M A N U A L V A L V E
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 relief valve.
R E G U L A T O R V A L V E
L O C K - U P T I M I N G V A L V E
14-40