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TH400 Leaking from plug

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TH400 Leaking from plug

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May 5, 2016 | 07:27 PM

#1

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From: Fayetteville, NC

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TH400 Leaking from plug

My new TH400 is leaking from the plug in the pic. I think an O-ring goes around it, anyone know the size? I would like to pick one up before I pull the old one. Been chasing what I thought was a pan leak, and 5 gaskets and 6 fluid drains later I finally see my problem.

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May 7, 2016 | 11:29 AM

#2

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From: burbank ca

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any trans shop should have it, it is the same on the 2004r old plastic sometime shrinks so l wouldn't be afraid to use hi temp silicon also

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May 7, 2016 | 09:07 PM

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Hopefully I got it fixed. The one on the right was the one leaking. The O-ring seems to be almost half the size as the one I pulled from another trans.

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May 7, 2016 | 09:09 PM

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You can see better in this pic. But its rotated, so the one on the left is the leaky one

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May 9, 2016 | 06:21 AM

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From: woodbine, md

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Someone prob put the wrong o ring on it

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May 9, 2016 | 12:59 PM

#6

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O ring on the left doesn't fit the recess very well. Looks like you should be good!

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