Quote:
Originally Posted by Skippy
I was doing some searching and found a suggestion that a stuck fan clutch can be rebuilt by taking it apart, cleaning it, and re-filling with gear oil. That was on a Datsun Z car site. Has anyone tried this with a Mercedes fan clutch?
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I've done it to a clutch for an OM606.
There is a temperature sensitive spring plate across the front. Remove that, underneath is a seal and a little pin. Remove both, you have access to the hole through which you can add silicone fluid.
I went to a hobby store and bought a small bottle of silicone oil, I think it was 5000 cst or 3000 cst.
Heated the fan clutch with a heat gun, allowed cooling action to pull oil in from syringe. Trial and error to figure out how much oil to add.