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post #1 of (permalink) Old 04-17-2002, 12:13 PM
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TH350 leaking like a stuck pig!

The TH350 in my plow truck has developed a leak... a pretty big leak. The leak appears to be coming from inside the bell housing. It leaks when parked and not running... not sure if it does it with the engine on.

Any ideas what the culprit might be - is there a seal up there that blew out (where the torque converter slides in)?

I've got a B&M high capacity pan (2 extra quarts) on it if it makes a difference.
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post #2 of (permalink) Old 04-17-2002, 04:29 PM
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Re: TH350 leaking like a stuck pig!

Sounds like the input seal, although I had a bad leak in mine and it turned out the dip stick was not inserted all the way into the housing
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post #3 of (permalink) Old 04-18-2002, 08:39 AM
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Re: TH350 leaking like a stuck pig!

If its the input seal, make sure you replace the bushing in the pump behind the seal.
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post #4 of (permalink) Old 04-18-2002, 07:11 PM
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Re: TH350 leaking like a stuck pig!

I would say, that since it leaks when it is not running, it probally is not the seal. More like something that leaks when the converter dumps it's oil after being shut down, raising the fluid level in the pan. That dipstick response would be a good example.
post #5 of (permalink) Old 04-19-2002, 10:26 AM
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Re: TH350 leaking like a stuck pig!

I originally thought it might be the dipstick grommet, too. I have checked the grommet a couple times since the deleuge started and it's not the culprit... the tranny is leaking from somewhere up front. The fluid seems to be coming from the drain hole in the bottom of the flywheel cover.

I'm going to track it down more precisely this weekend. If the issue is too much of a hassle to fix (requiring removal of the trans & case anyways), I have another 350/203 in good shape I can swap in.
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