#
OIL PUMP CONSTRUCTION/OPERATION

BHE051319220T02

## Construction

• The oil pump, mounted behind the torque converter, is driven directly by the torque converter.

• Inner and outer rotors are built into the pump housing in the oil pump.

• The inner rotor is driven by the torque converter in the same rotational direction as the engine.

1 | Torque converter
2 | Oil pump
3 | Oil pump housing
4 | Outer rotor
5 | Inner rotor
6 | Oil pump cover

## Operation

• When the inner rotor in the oil pump rotates, ATF is drawn from the oil pan to the oil pump and then discharged to the pressure regulator valve.

• The amount of ATF discharged is proportional to the rotational speed of the torque converter.

1 | Pressure regulator valve
2 | Out
3 | In