Th400 Torque Converter Shaft Seal

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perky

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Going through the truck fixing up leaks and such, and figured I would replace the torque converter shaft seal while the transmission will be dropped for front pump seal replacement, just to be safe while it's out. Was looking around, and didn't find much on it, so figure I'd ask where it's located on the converter and how to replace it. Thanks in advance guys.
 

NickTransmissions

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Going through the truck fixing up leaks and such, and figured I would replace the torque converter shaft seal while the transmission will be dropped for front pump seal replacement, just to be safe while it's out. Was looking around, and didn't find much on it, so figure I'd ask where it's located on the converter and how to replace it. Thanks in advance guys.
Check the pump bushing once you have the front seal off. If it's excessively worn, trans would have to come out so it can be replaced.
 

NickTransmissions

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Sounds good. Thank you for the tip.
You're welcome...I should clarify my above to say the pump would have to come out and apart so you can replace the bushing, if worn as the transmission will already have been taken out so you can replace the seal. Also wondering if Rock Auto is listing the pump's perimeter o-ring seal that seals the pump against the case as the "pump seal" and the front seal itself that seals off the torque converter hub as the "torque converter seal". I haven't looked on their website but that's my guess as to why you're seeing two very similar listings for a pump seal.
 

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