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The auxiliary fan on a Mercedes is located in front of the radiator. To remove it, one should remove the wiring connection from the fan first, then unscrew the bolts holding the fan in place.
The electric fan is operated by a switch on the aircond receiver drier. The engine fan on the water pump is operated by an electric switch on the front of the head
Blower is a dual squirrel cage unit located under the wiper arm assembly. You will need to remove this and the engine bay fire wall center section to gain access.
well if it has the same engine layout as my 1993 190e in the front of the engine there is a fan, and that fan has a clutch integrated into it, to engage when the engine starts to over heat, and they do wear out which means you can stop the fan with your hand while the engine is running. not recommended to try doing with your fingers.
how do you remove the fan clutch on a 1992 318i 1.8 liter?
i had a similar problem i ended up replacing the fan clutch
start by popping the bonnet
It is probably the motor itself it sounds like u have a bearing going bad you can view my tutorial on this at the following link it will help u test this problem http://www.benzworld.org/forums/w201-190e-d-class/1358590-troubleshooting-mercedes-benz-190-e-d-210-tempmatic-climate-control-system.html#post2716281
Take it to a mercedes garage
Drain the radiator. Remove the pump belt. Remove the fan and shroud if needed. Unbolt the pump and remove it . Bolt on the new pump. Reinstall the fan and shroud, the belt, then refill the radiator.
relay is in fuse box, near break booster, fan switch is in left front of the intake, blue sensor has two pin.
how to install fan clutch sensor in mercedes 1984 500 sel