GF27.55-P-2001NQ Transmission Oil Cooler, Component Description

GF27.55-P-2001NQ Transmission oil cooler, component description
- Transmission 722.9
- with CODE (P98) Black Series

Component Identification:

Location
The transmission oil cooler is located at the front in the left wheel well.

Task
The transmission oil cooler lowers the temperature of the transmission oil and thus prevents overheating damage in the transmission.

Component Identification:

Function
At a transmission oil temperature less than 90 degrees C the transmission oil flows from the feed of the transmission oil heat exchanger via a bypass to the return of the transmission.

As the transmission oil temperature increases the expansion element is heated up by the transmission oil flowing along the bypass.

The expansion element expands and presses the thermostat piston downwards against the spring of the thermostat piston.

As a result the return from the transmission oil cooler to the transmission is opened at a transmission oil temperature greater than 90 degrees C and the bypass is closed off.

The transmission oil flows through the transmission oil cooler, the oil being cooled by the oncoming air which is flowing past.