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[GMCnet] tranny cooler lines [message #75637]

Thu, 04 March 2010 10:31

Messages: 1262
Registered: September 2009

Karma: 0

Senior Member

The PO installed an exterior/additional transmission cooler at the front
of the coach. He didn't replace the hard lines, just cut one off and
clamped on rubber lines. Those hard lines are in tough shape, so I bought
a nice pair of stainless ones from JimK.

My question: any suggestions on what to replace the rubber hoses with?

thanks,
Karen
1973 23' Patience Tester
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Karen 1975 26' San Jose, CA

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Re: [GMCnet] tranny cooler lines [message #75641 is a reply to message #75637]

Thu, 04 March 2010 11:28

WD0AFQ

Messages: 7111
Registered: November 2004
Location: Dexter, Mo.

Karma: 207

Senior Member

Karen, you will get lots of responses on this. The pressure in those lines is not that great. But, I like to take mine to a shop and have custom hydraulic hoses made. That is just me. I think most folks do as the po did on your's and that may be fine.
I have a cooler waiting for me at home that will be mounted in my radiator gaurd and hooked to the trans line. My old one was hooked up by po just like your's was.
Dan

3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer

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Re: [GMCnet] tranny cooler lines [message #75646 is a reply to message #75637]

Thu, 04 March 2010 11:41

Gary Worobec

Messages: 867
Registered: May 2005

Karma: -1

Senior Member

The issue here is to prepare the stainless lines correctly for flexible hose
whether Aeroquip type or oil compatible. On my stainless lines when I put
the tranny cooler on I used Aeroquip SS over hose and then did inverted
flares on the cut ends of the SS lines to do the connections using fittings.
Cost wise I only like to cry once. I think that proper hose that will handle
the heat and pressure is fine. But you should have some sort of bead or
inverted flare on the cut ends of the SS line so the hose does not slide
off. Even using a regular flaring tool and then carefully smoothing the
edge of the flare with a file to get rid of the sharp edge would in my
opinion help a lot. Also make sure that the SS lines are supported.
Stainless steel does not like vibration.

Thanks

Gary and Joanne Worobec
1973 GMC Glacier
Anza, CA

----- Original Message -----
From: "KB" <kab7@sonic.net>
To: <gmclist@temp.gmcnet.org>
Sent: Thursday, March 04, 2010 8:31 AM
Subject: [GMCnet] tranny cooler lines

> The PO installed an exterior/additional transmission cooler at the front
> of the coach. He didn't replace the hard lines, just cut one off and
> clamped on rubber lines. Those hard lines are in tough shape, so I bought
> a nice pair of stainless ones from JimK.
>
> My question: any suggestions on what to replace the rubber hoses with?
>
> thanks,
> Karen
> 1973 23' Patience Tester
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

_______________________________________________
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Re: [GMCnet] tranny cooler lines [message #75647 is a reply to message #75637]

Thu, 04 March 2010 12:08

emerystora

Messages: 4442
Registered: January 2004

Karma: 13

Senior Member

Buy some 3/8" steel brake line at about any auto parts store and bend
them to fit. They come in various lenghts and are pre flared with
fittings attached. You can get a brass "reverse flare coupler that
will connect to the end of your new stainless steel line.

I have the external cooler connected to the outlet of my transmission
cooler that is built into the radiator and the outlet of the external
cooler connected to the return line to the transmission

Emery Stora

On Mar 4, 2010, at 11:31 AM, KB <kab7@sonic.net> wrote:

> The PO installed an exterior/additional transmission cooler at the
> front
> of the coach. He didn't replace the hard lines, just cut one off and
> clamped on rubber lines. Those hard lines are in tough shape, so I
> bought
> a nice pair of stainless ones from JimK.
>
> My question: any suggestions on what to replace the rubber hoses with?
>
> thanks,
> Karen
> 1973 23' Patience Tester
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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Re: [GMCnet] tranny cooler lines [message #75650 is a reply to message #75647]

Thu, 04 March 2010 12:39

WD0AFQ

Messages: 7111
Registered: November 2004
Location: Dexter, Mo.

Karma: 207

Senior Member

Emery, I like your's. Let me look at it when we get to Montgomery, please. Will save me some money.
Thanks,
Dan

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