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Old 03-15-2003, 04:48 PM
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Post th400 leaking fluid

Hey, i have a gm th400 in an s10 and whenever it is shut off tranny fluid pours out. not much leaks out when it's running, but as soon as it's shut off it starts leaking...looks like it is coming from around the torque converter. any idea's?

Steve

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Old 03-15-2003, 06:17 PM
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damaged seal, worn convertor or worn bushing.
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Old 03-15-2003, 07:20 PM
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Take off flywheel,then cover look up between converter and pump the front seal it will leak when engine is running more than when engine is off more likely pump o-ring or loose pump bolts at trans case. also check dipstick tube( filler tube) o- ring if old style ring will leak if tube is bent in ring land up date with late style tube with boot style
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Old 03-16-2003, 08:54 AM
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thanks for the help. It barely leaks at all when running, just when it's shut off, a minute or so later the fluid starts dripping out and it's a pretty steady stream, leaves a pretty good puddle then it stops a few minutes later.

Steve
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Old 03-16-2003, 12:57 PM
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I had a Ford with an FMX 'box that did the same thing, the convertor hub was pitted in a few places. Being the cheapskate that I am ,I degreased the hub and sweated the oil out of the pits with a blowtorch then filled the pits with two pack epoxy,let it dry overnight, then sanded it smooth. Worked a treat,it also works on motorcycle fork stanchions too.
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