Quote:
Originally Posted by drover
The main thing is plastic versus metal pulley, as said before if the bearing goes pear shape the plastic pulley melts the metal job doesn't but makes a hell of a noise. The takeover happened last year I believe.
If your going to do it yourself and your 3lt has the same bolts as the 2.7lt (both MB engines) then make sure your have the correct bit to fit the bolt head as they can be a bastard to remove, they are a torx head I think .
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Plastic pulleys just dont last. not only do they melt, they also crack. Replaced both idler pulleys on my XJ with metal ones that have bearings (Timkin) that can be replaced. IIRC they were for a ford Mondeo. I just took the old ones into my favorite bearing shop & they found ones that were suitable. ~ $ 25 each.
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