Replacing the automatic transmission oil cooler (BMW X5 E53)

Replacement of oil radiator (heat exchanger) Automatic transmission should be carried out in the following order. Drain the coolant from the engine cooling system and send it for disposal. When disconnecting the oil lines, transmission oil flows out, which must be collected and sent for disposal. Disconnect the oil lines, for which press the pipelines (1 and 2, Fig. 9.33) towards the heat exchanger and pull the retaining ring back. Keeping the retaining ring in the pressed position, disconnect the oil pipes (1 and 2) from the heat exchanger.



Remove the heat exchanger retainer and remove the heat exchanger from the mounting plate on the engine cooling system radiator.

When installing a heat exchanger, it is necessary:

• check and, if necessary, replace the O-rings;
• press the lock to return it to its original position;
• install the heat exchanger onto the mounting board until it locks into place with a clearly audible clicking sound.

(The original version is on the portal «BMWman.ru»)