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06-28-2020, 02:07 PM | #1 |
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727 Torqueflight question
Gents, I have no experience with a 727 transmission.
I have a 1974 IH Scout II with that trans. If the scout sits for even a few days the converter drains back into the trans overfills it, then leaks on the floor. Is there a check ball or some other means in the valve body that is supposed to prevent this? It did not do this until recently. Kevin Panzino |
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06-28-2020, 06:02 PM | #2 |
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Re: 727 Torqueflight question
Where is it leaking from , the pan gasket or dipstick tube ? Best to fix those leaks , not much you are going to do to solve converter draindown .
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06-28-2020, 06:49 PM | #3 |
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Re: 727 Torqueflight question
Also check the case seal where the shift lever attaches to the valve body on the driver's side.
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LOCOMOTION Racing |
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06-29-2020, 03:16 AM | #4 |
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Re: 727 Torqueflight question
Had 727,s in a couple bracket cars. If i filled them to the exact full mark on the stick, they would leak down to their happy spot. Probably about 1/4 quart then stop. So i finally quit filling them back to the full mark and they would stay right there.
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06-29-2020, 07:57 AM | #5 |
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Re: 727 Torqueflight question
Ok, I see. It probably always drained back to the trans, just now what has changed is that its leaking. I changed the pan gasket, no love. Hard to see where its coming from because it just runs along the pan rails and drips from the pan bolts.
Gonna take a close look at the dipstick tube seal, and the shifter linkage seal now. Thank you all for the input !!! Kp |
06-29-2020, 11:01 AM | #6 |
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Re: 727 Torqueflight question
If the dipstick is the 1974 style there is an o-ring on the bottom where it inserts into the transmission unlike the push-in seals that they use today and I've had those o-rings get hard and leak. So the best fix for that is to get a new style seal and dipstick but unfortunately I don't know the part numbers for what you need but maybe someone else knows.
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