FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: 338Raptor on February 23, 2023, 01:34:32 AM
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Does anyone have part numbers for the chain idler and tensioner bearings?
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Reading the bearings that I have, the fuel pump gear gets a 6205 C3, and the stub cam nose and idler arm gear get a 6204 C3. The box for the the stub cam nose and idler arm gear says 6204-2NSE9. Hope that helps - Jay
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Yes that helps. Thanks.
By the way, before he passed away I spoke to Jim Greene about modifications he did to his cammers. He mentioned modifying the mounting location of the idler gear pedistal/base to prevent it from tilting or flexing under load. I believe he attributed the flex from the gasket under the center of the pedistal (behind the back plate) with no support on the sides of the pedistal/base. He felt this flexing was causing a slight misalignment of the chain and sprocket causing premature wear. He said before he performed this modification he was only getting 15,000 miles from a chain set. After the modification he never experience another failure well beyond 15k miles.
I don't remember exactly what he modified but I believe he replace the gasket directly under the pedistal/base with a steel shim (same thickness of the gasket). This shim still wouldn't support the edges of the pedistal/base but it would not flex under load like a cork gasket would thus preventing slight misalignment.
Have you heard anything about this? Or is this a non-issue?
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I've never heard of that issue, and I've never had a chain actually wear out, although I have had a couple break. One thing is that the gasket under the backing plate is not cork, they are just paper gaskets so they don't have a lot of flex to them. In any case, I don't see any reason why you couldn't cut a piece of sheet metal to the same dimensions as that gasket, RTV it on both sides and use that instead of the paper gasket. Couldn't hurt...