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Leaking c6 need info

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Old Sep 21, 2016 | 10:50 AM
  #1  
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Leaking c6 need info

I have looked and haven't found a good enough answer for me to feel comfortable moving forward on my leak. A little back ground .I'm working on my 73 f350 390 c6 2wd. I have replaced the pan gasket straightened the pan flanges cleaned the transmission to find where the leaks are coming from. Found the vacuum modulator leaking replaced it. Now there is a cover to something on the passenger side right above the pan rail it has 4 bolts holding it on. What is behind that? Can I pull it off and reseal it with out causing more headaches? I can post pics of it if needed. Sorry for the long post
 
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Old Sep 21, 2016 | 11:14 AM
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I had this same exact thing. I even replaced my pan before figuring it out. It's called the "Servo". And you can not get the gasket by itself without buying the entire gasket kit. Funny when I shopped, my local parts store priced the kit at close to $90 tax and all. But you can find the kits online for as little as $25 on up to $180 with this particular gasket in it. I pulled my cover, cleaned off the gasket and then just used gray permatex and fixed mine. Has been leak free for over a year now.
 
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Old Sep 21, 2016 | 12:10 PM
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Thank you gittinwidit for the quick response. I will do that this evening. Have a good day.
 
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Old Sep 21, 2016 | 01:06 PM
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Gasket, intermediate band servo cover
D4AZ-7D026-A

There are tons of them still available. There are over 50 Ford dealers that have them in stock, not to mention the obsolete suppliers and aftermarket.

Green Sales in Cincinnati, OH has 63 in stock (800) 543-4959
If you want some more contacts, let me know.
 
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Old Sep 21, 2016 | 01:09 PM
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Originally Posted by mikeo0o0o0
Gasket, intermediate band servo cover
D4AZ-7D026-A

There are tons of them still available. There are over 50 Ford dealers that have them in stock, not to mention the obsolete suppliers and aftermarket.

Green Sales in Cincinnati, OH has 63 in stock (800) 543-4959
If you want some more contacts, let me know.

Well blow ME down... But for $8 shipped I'd still go for the gray ATV...

 
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Old Sep 21, 2016 | 03:52 PM
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Originally Posted by gittinwidit
Well blow ME down... But for $8 shipped I'd still go for the gray ATV...
Actually, that price isn't too bad. The last dealer cost was $7.87 and last suggested list was $12.11.
 
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Old Sep 21, 2016 | 03:59 PM
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Or if you have a good parts house you can buy a piece of gasket material for around $4 and make 1.
 
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Old Sep 21, 2016 | 04:05 PM
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Originally Posted by mikeo0o0o0
Actually, that price isn't too bad. The last dealer cost was $7.87 and last suggested list was $12.11.
Mike, that price was for a package quantity. Since the part number is obsolete, I couldn't find how many came in the package, but would guess at least 4.
 
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Old Sep 21, 2016 | 06:00 PM
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A leak at the shift lever shaft can drive you nuts. $3.00 part for the seal but you have to drop the valve body to replace it.
 
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Old Sep 21, 2016 | 06:28 PM
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Originally Posted by NumberDummy
Mike, that price was for a package quantity. Since the part number is obsolete, I couldn't find how many came in the package, but would guess at least 4.
Oops!, you're right Bill. I forgot the prices are always package quantities. Too bad they don't also list what that "quantity" is .
 
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Old Sep 21, 2016 | 07:00 PM
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Your leak could also be the servo cover o ring that's gone bad.
Here is the L code servo cover that I pulled from my C6.



So I would inspect it while you are there.

Replacement part (not Ford):

C6 Transmission gaskets & O rings C6 Transmission

I ended up putting an aftermarket R type servo (to go with the A servo lever) in mine and it works well.
 
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Old Sep 21, 2016 | 07:11 PM
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Thank you all for the advice. Mike ooo and numberdummy you guys have my respect for the knowledge you guys share. Ford can you post a side pic so know if that is the same cover as mine. That would be cool if I could replace a oring and use a little right stuff rtv to stop my leaks
 
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Old Sep 22, 2016 | 11:00 AM
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Upper picture at right of the basic part numbers for the C6 servo cover and its associated gaskets/seals. Here are the complete part numbers:

D5TZ-7D024-B (replaced C6AZ-7D024-C) .. Intermediate Band Servo Piston Cover Seal / Obsolete

C6AZ-7D025-A .. Intermediate Brake Piston (7D021 in pic) Seal / Obsolete

D4AZ-7D026-A .. Intermediate Band Servo Cover Gasket / Obsolete

DAMSKOV AUTO SALES in Omak WA (509-826-2000); KLIMESH MOTOR SALES in Calmar IA (563-562-3241); GREEN SALES CO. in Cincinnati OH (800-543-4959) have all of these parts.
 
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