Removing and installing air-to-oil cooler - RA18001201300X(18-1300)

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.

Preceding work:

Bottom engine compartment panel removed

(Maint. Man. 6190).

Front bumper removed (REMOVAL AND INSTALLATION OF FRONT BUMPER ).

Operation no. of the operation texts and work units or standard texts and flat rates

18-6820

Model 129

Fig 1: Identifying Air-To-Oil Cooler (Model 129)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Air scoop (4) at front	take off, fit on.
Oil lines (11) and (9) of air-to-oil cooler (2)	unbolt, bolt on (30 Nm); brace with wrench (WAF 22) at hexagon head (14).
Clips (5) out of left and right mounting brackets (8)	take off, fit on
Air-to-oil cooler (2) with rubber bushes (6)	detach from mounting brackets (8), remove, install.
Leaks NOTE: The oil circulates in the air-to-oil cooler (2) once the thermostat valve in the oil filter housing opens	check when engine warm. see (18-1000) .
Oil level	check, adjust to correct level.
Preceding work: Front bumper removed (REMOVAL AND INSTALLATION OF FRONT BUMPER ).	Operation no. of the operation texts and work units or standard texts and flat rates 18-6820

Model 140

Fig 2: Identifying Air-To-Oil Cooler (Model 140)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Front bottom engine compartment panel (7)	take off, fit on (Maintenance Manual 6190).
Oil lines (9 and 11) of air-to-oil cooler (2)	unbolt, bolt on (30 Nm); brace with wrench (WAF 27) at hexagon head (14).
Bolts (5)	unscrew, screw on.
Bracket (4) with rubber bushes (6)	pull off, fit on.
Installation note The retaining lug (arrow) on the bracket (4) must engage in the recess (arrow) at the mounting bracket (8). Air-to-oil cooler (2) at mounting brackets (8)	take off, fit on.
Leaks	check when engine warm.
NOTE: The oil circulates in the air-to-oil cooler (2) once the thermostat valve in the oil filter housing opens	see function of oil filter (18-1000) .
Oil level	check, adjust to correct level.

TIGHTENING TORQUES IN NM

Oil lines to air-to-oil cooler