chazola, replacing the fan clutch bearing bracket is quite involved, and requires extensive disassembly of the front of the engine ... at least on our 1991 300CE with the old style belt tensioner. For instance, the power steering pump bolts must be removed and the belt tensioner assembly. Plus, the allen head bolt for the coolant line bracket must be loosened/removed. This is the coolant line to the auxiliary water pump inlet. If the front of your engine is clean the job will be straightforward. I spent considerable time cleaning gunk off so I could see bolt heads.

I bought a reconditioned fan clutch bearing bracket from our local MB dealer, and gave the old one to the dealer to avoid paying the core charge.

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Fred Hoelzle