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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Leaking tranny fluid

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Old Aug 25, 2013 | 09:47 AM
  #1  
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Leaking tranny fluid

72 with the C6.

Now this ole girl has leaked fluids from the day I bought her. Mostly motor oil cuz the pan gasket is probably the original.

I don't drive this rig a whole lot. It's kinda like the neighborhood everybody gets to borrow it truck to haul stuff. Anyway, the trans will leak every now and then and I have to get up under there and tighten the pan bolts and that usually fixes it.

Had to add 4 qts the other day. I drove it a few miles away and back. When I parked it I looked under it and it was pouring tranny fluid from that little drain hole where the bell housing meets the engine block. From what I know about tranny's all that's in there is the torque converter right? How would a torque converter leak?

Can anyone helpa bruthu out?
 
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Old Aug 25, 2013 | 10:02 AM
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Its probably your front seal.
 
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Old Aug 25, 2013 | 10:17 AM
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fluid leak

QMAN, In addition to the front seal , the front pump "O" ring as well as all of the seals and gaskets have served their time. Cheapest fix, a bedpan to catch the oil and repour thru a filter. Otherwise pull it for a correct repair and rebuild. Since it seems to be a loner to friends and neigbors, try taking up a collection.
Good Luck, Kenny
 
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Old Aug 25, 2013 | 10:28 AM
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thanks dudes.

is that a do-it-yourself type of fix or is this a job for the shop?
 
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Old Aug 25, 2013 | 12:22 PM
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leak repair

QMAN, If the transmission is not slipping and the pan is not filled with metal parts you can reseal it with the help of a good repair manual. Or if you know of a reputable mechanic just bring it to him after you pull it. In the long run this will save the most time, tears, blood and $. Kenny
 
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Old Aug 25, 2013 | 01:55 PM
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If you keep cranking on the pan bolts , you probably have destroyed the pan gasket making the leak worse .
buy a filter and pan gasket kit and change it (don't over tighten the bolts or you'll destroy new gasket too)
 
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Old Aug 25, 2013 | 11:19 PM
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Again, thanks bros.

I don't crank on the pan bolts. Just every now and then they're a tad loose so I have to get em right.

Sucker has no shavings in the pan and it shifts like silk.
 
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Old Aug 26, 2013 | 12:24 PM
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little lock tight will fix the loose bolts
 
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Old Aug 26, 2013 | 01:40 PM
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Originally Posted by kenny nunez
QMAN, In addition to the front seal , the front pump "O" ring as well as all of the seals and gaskets have served their time. Cheapest fix, a bedpan to catch the oil and repour thru a filter. Otherwise pull it for a correct repair and rebuild. Since it seems to be a loner to friends and neigbors, try taking up a collection.
Good Luck, Kenny
2X Kenny. There is an o-ring, gasket, and the torque convertors front pump seal there needs changing. Easy to do if you have the means to pull the tranny.
I cracked up on the "try taking up a collection" line!
 
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Old Aug 27, 2013 | 12:52 PM
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Is there a seal kit I can buy or is it all onsies?
 
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Old Aug 27, 2013 | 02:14 PM
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Originally Posted by qman
Is there a seal kit I can buy or is it all onsies?
All three separate from Ford. I do not know about the aftermarket world.

C6AZ7A136A gasket
C6AZ7A248B o-ring
F2VY7A248A seal this part still available from Ford

If you don't get them aftermarket and want these genuine Ford let me know. I'll do a locate on them for you.
 
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Old Apr 21, 2015 | 11:25 AM
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I know, this is an old thread . . . but it's mine.

I'm finally gonna seal this puppy up. On quick question. When I shift this trans into drive (or reverse) it takes 3-4 seconds to engage. Is this a sign of something wore/broke/etc or is it what all C6's do?
 
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Old Apr 21, 2015 | 01:05 PM
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Hesitation is a sign of low fluid, clutch wear or trash/contamination in the hydraulic circuits.

Transmission fluid should be checked with the engine/transmission running and at operating temperature so that the transmission isn't over-filled.

It would also be good to check and make sure there's no leak in the vacuum line/modulator.
 
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Old Apr 21, 2015 | 01:42 PM
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Fluid is good and not overfilled. I will check the vacuum line.

Thanks
 
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