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Old 10-23-2004, 03:43 AM
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Air checking intermediate/direct clutch?

I'm rebuilding a TH350 and have air checked the intermediate and direct clutch piston seals. I applied about 30 psi of air to both and they pumped up immediately, however I did hear a little air leaking when I did. I applied a continuous 30 psi of air and they both remained pumped up but with air leaking from somewhere. Is this considered normal...this is my first rebuild so I'm not sure. I thought I read somewhere that as long as they pump up this is ok.

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Old 10-23-2004, 08:25 AM
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Cool

IF you air checked the intermediate clutch with the pump out of the tranny... it is possible the piston over extended.

The intermediate is the large piston in the pump body sections.

If you checked the clutch drums ( direct & forward) on the pump & stator , there will be some minor air leakage heard from the sealing rings and pump halves. Experience can tell a person if it is too much.

If you air check the drum assembly directly ( alone off the pump) there should be little air leakage
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Old 10-23-2004, 03:36 PM
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Thanks, I think I'm ok. I did check the direct clutch on the stator and the intermediate by its self and they displayed some leakage as you described.
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