GF27.55-P-2000AHV Transmission Oil Cooling, Function

GF27.55-P-2000AHV Transmission Oil Cooling, Function
- TRANSMISSION 722.930 in MODEL 204.0 /2 /3

Function requirements for transmission oil cooling, general

^ Circuit 87 (connected circuit 15) ON
^ Circuit 61 (engine running)

Transmission oil cooling, general

The transmission oil is heated at a temperature less than 80° C to reach the transmission's operating temperature quicker.

Transmission oil cooling lowers the temperature of the transmission oil and thus prevents overheating damage in the transmission.

Function sequence for transmission oil cooling

The transmission oil is drawn out of the transmission oil pan by a mechanical pump in the transmission and is pumped via the feed to the transmission oil heat exchanger (integrated into the engine radiator). Then the transmission oil flows from the transmission oil heat exchanger to the transmission oil thermostat. At a transmission oil temperature less than 90° C, the transmission oil thermostat routes the transmission oil back to the transmission via the return flow

At a transmission oil temperature greater than 90° C, the transmission oil thermostat opens and the transmission oil flows through the transmission oil cooler, before it flows back through the return to the transmission.