Self-Study Program

16
Note
Please note that impurities in the ATF (e.g. abrasion, chips, emulsions) are distributed
throughout the ATF cooling system and deposit here. The cooling system must, therefore,
be flushed thoroughly before repair or replacement.
For this purpose, the lines must be disconnected from the thermostat and the cooler in order
to rinse the individual components.
Make sure that all contaminants are removed.
If in doubt, components such as the ATF cooler or thermostat must be replaced.
Residual contaminants will lead to further complaints and damage the gearbox.
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ATF cooling
ATF cooling is thermostat-controlled by means of
an oil-to-air heat exchanger (ATF cooler).
The ATF cooler located in front of the engine cooler
and the air conditioning compressor, as seen in the
direction of travel.
Gearbox subassemblies
Oil temperature regulator (thermostat)
The thermostat is integrated in the supply and
return lines of the ATF cooling system.
An expanding wax thermostat with integrated
bypass (bypass thermostat) is used.
ATF cooler return line
ATF cooler supply line
ATF cooler
Oil temperature
regulator (thermostat)