Oil leak, Real Main seal?

Discussion topics on Willys Overland M series vehicles
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Raider2532
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Location: Cynthiana, KY

Oil leak, Real Main seal?

Post by Raider2532 »

My M38A1 appears to only leak oil around the front(bottom) of the bellhouse when I turn the engine off, not while its running. Is this the rear main seal?
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MODIFIED
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Post by MODIFIED »

Hi Raider, chances are it is oil leakage from your rear main or possibly the cam's rear welsh plug.. Though best to take a smell of the oil residue you mentioned to rule out gear oil that could also migrate from your trans to the same bottom area of your bell-housing.

The Gear oil (transmission /transfer case) has a distinct sour/burnt scent.

Are you seeing noticeable motor oil loss between changes?
Are you experiencing clutch-slippage?
Any evidence of oil residue along the rear of the oil pan?

keep in mind, you may have a leak elsewhere that may migrate to the bell-housing by turbulence when vehicle is driven.
Always Looking for M170 Parts and bits ;)
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