Chrysler laser 1990 Technical Information Manual page 279

AUTOMATIC TRANSAXLE
HYDRAULIC CONTROL SYSTEM
The hydraulic control system consists of an oil pump which
generates hydraulic pressure for the system, and valves and
solenoid valves to control the pressure
passages. The valves and solenoid valves are all built in the
valve body.
OIL PUMP
Oil pump generates the pressure for supplying oil to the torque
Reaction shaft
converter, for lubricating frictional parts of the planetary gear
support
set and the overrunning clutch, etc., and for activating the
hydraulic control system.
The pump is of the inner-teeth engaging involute gear type. It
always generates the oil pressure when the engine is running
Bushing
since the drive gear is driven by 2 pawls of the pump drive hub
welded at the center of the torque converter shell.
21-55
the oil
or switch