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63 Edorado. main oil seal always leaks replaced 3 times

Started by R Connors, December 31, 2020, 04:29:28 PM

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R Connors


russ austin

The Fel Pro is the wrong size and will leak, badly.  Best gasket has the correct rear main seal. You MUST use the special tool to install the upper seal. It prevents the seal from being shaved while installing the seal.  The block has a sharp edge that shaved the sealing surface off, and the special tool prevents that.  the tool is in the shop manual.
R.Austin

fishnjim

Could be grooving on the shaft at the seal surface or worn bearings, too.
Without a tear down, try the re-seal technique as outlined.

My old seal hypothesis says, replace the seal once, at most twice, and if it doesn't seal, it's probably not the seal.   

russ austin

Forgot to mention adding a think line of sealant at the back of the main cap. Oil can get through where the main cap bolts to the block.
R.Austin