FixVault

Fluid Pump

The fluid pump is of a "half-moon" pattern and delivers approximately 16 square cm of transmission fluid per revolution.

It is located between the torque converter and the transmission housing.

The torque converter is supported in the fluid pump by a needle roller bearing. The fluid pump is driven directly from the engine by the torque converter shell and supplies transmission fluid to the transmission and the hydraulic control unit.

The fluid pump draws in transmission fluid through a filter and delivers it at high pressure to the main pressure valve in TCM and main control valve body unit. This valve adjusts the pressure and returns excess transmission fluid to the fluid pan.

Fig 1: Identifying Fluid Pump Components
G00382696Courtesy of JAGUAR CARS, INC.