Flush out oil cooler lines and oil cooler - AR27.55-P-0001A

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

TRANSMISSION 722.6 /7

Fig 1: Flushing Out Oil Cooler Lines And Oil Cooler Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shown on model 168

Fig 2: Flushing Out Oil Cooler Lines And Oil Cooler Components - Shown On Model 168

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Extracting oil
1	Connect pump (2) to vacuum connection on reservoir (3)	See: Fig. A
2	Attach plastic hose to connection fitting (1) and push all the way down the oil filler pipe into the oil pan
3	Actuate pump	The extracted oil runs into the reservoir (3).
	Flushing
4	Connect pump (2) to pressure connection on reservoir (3)	See: Fig. B
5	Fill reservoir (3) with kerosene
6	Attach plastic hose to connection fitting (1), screw onto one of the two oil cooler lines using the appropriate connection piece (4) and flush out with kerosene	Ensure that the kerosene can flow through freely. Blow out oil cooler and oil cooler line thoroughly with compressed air.
7	Connect the second plastic hose to the second oil cooler line and collect the escaping transmission fluid	Secure the plastic hose on the connection fitting with a hose clamp if necessary.

Fig 3: Identifying Hand Pump (210 589 00 71 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.