GF27.57-D-1010H Oil Pump Component Description

GF27.57-D-1010H Oil Pump Component Description
- TRANSMISSION 722.6






6 Oil pump (crescent-type pump)
6a External gear
6b Internal gear
6c Crescent
6d Pressure chamber
6e Suction gallery

Arrow: Direction of rotation

Location

The oil pump (crescent-type pump) is installed behind the torque converter in the torque converter housing and is driven via the drive flange of the torque converter.

Task

To produce the necessary oil pressure for the hydraulic sequences.

Design

An external gear supported excentrically on bearings in the pump housing is located on the internal gear connected to the drive flange. The crescent guides the external gear.

Function

When the engine is running, oil is delivered through the suction gallery along the top and bottom side of the crescent to the pressure chamber of the housing. The meshing of the teeth prevents oil from flowing from the pressure side to the suction side.