04-13-2019, 09:44 PM | #1 |
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Join Date: Jul 2013
Location: boise idaho
Posts: 115
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Th350 leaking
My th350 is leaking...I replaced trans filter and gasket and seems fine there...I definitely have a leak where the Speedo cable goes in and also somewhere towards the front of the motor but idk where...I'm not very familiar with the th350 and don't know where to start
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04-13-2019, 10:00 PM | #2 |
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Join Date: Jun 2017
Location: Cherryville, NC
Posts: 2,155
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Re: Th350 leaking
Speedo cable fitting itself has an O ring around its body...they go hard and leak...there is also a small lip seal where the cable itself screws on to the fitting...
Remove the cable, then remove the small bolt retaining the lock tab then pull the speedo fitting out....the O ring will be visible...look in the end of the fitting for the small lip seal.... The trans output shaft seal should also be replaced while you are under there. The leak at front could be the filler tube seal...or the front pump convertor seal... If the convertor seal is leaking the trans will need to come out...the leak in that area could also be the rear main oil seal on the engine... Hope this helps...
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Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2012 Chevy Equinox |
04-13-2019, 10:08 PM | #3 | |
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Join Date: Jul 2013
Location: boise idaho
Posts: 115
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Re: Th350 leaking
Quote:
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04-14-2019, 12:19 PM | #4 |
Moderator
Join Date: Jun 2017
Location: Cherryville, NC
Posts: 2,155
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Re: Th350 leaking
The filler tube seal is an easy replace...follow the tube where it crosses the trans/engine block join line and you will find a bracket on one of the trans/engine bolts...remove the bolt, pull the tube,,,,the seal is a thimble looking seal that usually stay in the trans...pop it out with a screw driver and push new seal into hole...
Little trans fluid on fill tube and push it back into hole/seal...replace and tighten bolt...
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Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2012 Chevy Equinox |
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