Hello everyone,

Two questions for a 1987 300E M103 engine:

1. My valve cover gasket is leaking, what is the correct torque for the valve cover bolts?

2. I have tested and determined that the auxiliary fan switch (green 3-pole) in the cylinder head has failed. Is there any sealant I should put on the threads such as teflon tape? The new one didn't come with an o-ring or anything. Also how much should I tighten it?

Thanks much!

-Chris

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Streetside: 1987 Mercedes 300E Petrol Blue/Green
2014 Ford Mustang Grabber Blue
1999 Ford Ranger Green

Dockside: 1968 Eltro 17
1985 Silverton 34C