Oil pump component description - GF27.57-P-1010G
TRANSMISSION 722.6 in MODEL 204.0, 216, 221 up to Model Year 8
Location
The oil pump (crescent-type pump) is installed in the torque converter housing behind the torque converter and is driven via the drive flange of the torque converter.
Task
It produces the necessary oil pressure for the hydraulic sequences.
Design
An external gear supported on bearings eccentrically 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 pressure chamber of the housing. The meshing of the teeth prevents oil from flowing from the pressure side to the suction side.