Modulator seal

[johnny]

What should the transmission modulator seal look like, and what size. Also, how does the holder mount? Bend away from the housing, or against it?
I have the bend away from the housong, and it seems to hold the modulator in place and solidly against the case. I've two generic O-rings on it. I
STILL get drips which libne up on the rear of the pan. It loses maybe a cup of fluid a week sitting, driving back from Augusta indicates about the
same.
It is my contention that the coach can run dry underneath. I now have the oil lines and cooler baqck in stock configuration, and no more oil leaks.
Using J.R.'s stainless braded hoses and stainless pipes. The pan has had a new gasket and black sealer listed for transmissions, I don't think that's
where it's oozing.
What kind of seal is >supposed< to be on the modulator? The book shows a seal without being real specific.

--johnny
--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased

 

[RF_Burns]

Johnny,
I had my modulator out more than a couple of times this past summer. It had just a single O ring. It did not leak, but it was not snug, I could turn
it when the bracket was tight. We tried to bend the forks of the bracket a couple of times, then it snapped. Luckily I was at Al Hamilton's and he had
a spare tranny so I got the bracket from it.

Finally put a new modulator on and fixed my shifting issue and now this one is snug (doesn't turn)

I'm away from home otherwise I'd measure the O ring from the old modulator for you.

--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

 

[powwerjon]

Check out NAPA part

JR Wright

>
> What should the transmission modulator seal look like, and what size. Also, how does the holder mount? Bend away from the housing, or against it?
> I have the bend away from the housong, and it seems to hold the modulator in place and solidly against the case. I've two generic O-rings on it. I
> STILL get drips which libne up on the rear of the pan. It loses maybe a cup of fluid a week sitting, driving back from Augusta indicates about the
> same.
> It is my contention that the coach can run dry underneath. I now have the oil lines and cooler baqck in stock configuration, and no more oil leaks.
> Using J.R.'s stainless braded hoses and stainless pipes. The pan has had a new gasket and black sealer listed for transmissions, I don't think that's
> where it's oozing.
> What kind of seal is >supposed< to be on the modulator? The book shows a seal without being real specific.
>
> --johnny
> --
> Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> "I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

 

[johnny]

Thanks. I'll hit the local NAPA store. And compare woith the one which comes with the modulator. Which I managed to lose.

--johnny
--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased

 

[johnny]

the NAPA crossed to a Cardone HELP! package of Viton o-rings. The NAPA is .103 thick, the Cardone is .106. I dont thin 3/100 of an inch is gonna
matter. Anyhow, one on it was broken so I expect this will stop the drip. I hope I'll run it up to the Dixielander's 30th tomorrow and see if it
stays dry.

--johnny
--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased

 

[johnny]

Followup - A trip to Chattanooga and partway home shows no leaks or drops. I think I've beat this one.

--johnny
--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased