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1970 - 1971 Mopar Brake Tube Tee Autopsy #1120721
11/24/11 05:23 PM
11/24/11 05:23 PM
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Posts: 32
Virginia, USA
sah62 Offline OP
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I just finished writing an article that describes how to disassemble the brake tube tee and pressure differential warning switch that was used on 1970 and 1971 Mopars (B, J, R, and W-bodies) equipped with drum brakes. Here's a link to the article:

https://www.musclecarresearch.com/1970-71-mopar-brake-tube-tee-autopsy

I'd appreciate any insights, additions, or corrections to make the article more useful. I know that a similar-looking part was used in earlier model years. Was this valve used on any other vehicles? Is anybody interested in a seal and spring kit to rebuild valves like this?


Scott Hollenbeck Administrator, Mustang 428 Cobra Jet Registry Owner, Muscle Car Research LLC 1970 Ford Mustang Mach 1 2006 Dodge Charger SRT8 1995 Chevrolet Impala SS
Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: sah62] #1120722
11/24/11 06:07 PM
11/24/11 06:07 PM
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Sacramento CA
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Morty426 Offline
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It's very well written as a guide. Would like to see the restoration part.

Are you planning on removing the bracket to replate it?

Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: Morty426] #1120723
11/24/11 06:16 PM
11/24/11 06:16 PM
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NORTHERN VA
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THESHAKERPROJECT Offline
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I reall would like to see a re-build kit made that contains the o-ring seals and all other seals needed. When putting the valve together again, do you use any type of sealent on the top and bottom ?

Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: THESHAKERPROJECT] #1120724
11/24/11 06:46 PM
11/24/11 06:46 PM
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Montreal,Quebec,Canada
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JulesdaWiperman Offline
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Good article Scott.
You can skip the step of removing the end seat by removing the hex head brass screw and then with air pressure
blow out the springs and cups. You will have to plug the hole where the switch goes and the other holes with the old brake line fittings.
If you Dremel out the crushed brass around the bracket, you can remove it and send it out to be plated.
Below is a picture of one that I did in the past. I no longer do them as repros are now available.
Jules

6934584-011.JPG (107 downloads)
Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: JulesdaWiperman] #1120725
11/24/11 08:43 PM
11/24/11 08:43 PM
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Posts: 32
Virginia, USA
sah62 Offline OP
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Thanks for the comments! I wasn't sure about the need to remove the seat until after I had it all apart and saw the internal parts. You're right, though, compressed air could do the trick.

Quote:

It's very well written as a guide. Would like to see the restoration part.

Are you planning on removing the bracket to replate it?




I'll figure out what to do with the bracket once I have it all cleaned up. The plating I can see under the grime looks pretty decent, but it will probably have to be re-done to have something that's worth putting on a restored car.

Quote:

I reall would like to see a re-build kit made that contains the o-ring seals and all other seals needed. When putting the valve together again, do you use any type of sealent on the top and bottom ?




Sealants aren't needed to put the parts back together. With new o-rings and good brake line fittings there shouldn't be any leaks.

I'll look into the cost to come up with a seal kit. I'm not yet sure if it makes sense to include the springs - if they're not rusted they can probably just be cleaned and re-used. Even though repros are available I'm sure there are people who want to rebuild these parts to preserve the date codes.


Scott Hollenbeck Administrator, Mustang 428 Cobra Jet Registry Owner, Muscle Car Research LLC 1970 Ford Mustang Mach 1 2006 Dodge Charger SRT8 1995 Chevrolet Impala SS
Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: sah62] #1120726
11/24/11 08:48 PM
11/24/11 08:48 PM
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Today? Who Knows?
1_WILD_RT Offline
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There are known issues with the Chinese Repo valves... Get a seal kit together & you'll make some guys restoring these cars very happy...


"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: 1_WILD_RT] #1120727
11/24/11 09:10 PM
11/24/11 09:10 PM
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Lima, Peru
domingo Offline
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Yes, the repros dont work!

if somebody could come up with a rebuild kit, it would sell a lot IMO.

Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: domingo] #1120728
11/25/11 06:49 PM
11/25/11 06:49 PM
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California
1970mopar Offline
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I have the correct o-rings -
I believe there is three or four different ones.

I do not have the cup seals.

I sourced out most of the parts about 7 years ago when I was rebuilding/ restoring originals. Like Jules I no longer do them but I do have some of the parts.

Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: sah62] #1120729
11/26/11 12:40 PM
11/26/11 12:40 PM
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Virginia, USA
sah62 Offline OP
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Has anyone ever seen one of these parts with a hex head plug like the one in this picture? Is the plug original or a replacement?


Scott Hollenbeck Administrator, Mustang 428 Cobra Jet Registry Owner, Muscle Car Research LLC 1970 Ford Mustang Mach 1 2006 Dodge Charger SRT8 1995 Chevrolet Impala SS
Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: sah62] #1120730
11/26/11 02:23 PM
11/26/11 02:23 PM
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NORTHERN VA
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THESHAKERPROJECT Offline
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the brass hex plug on the far rt in you pic is orig. I have the same valve on my car. Look at Jules pic above. Its the same plug.

Last edited by THESHAKERPROJECT; 11/26/11 02:39 PM.
Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: THESHAKERPROJECT] #1120731
11/27/11 11:30 AM
11/27/11 11:30 AM
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Virginia, USA
sah62 Offline OP
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Quote:

Look at Jules pic above. Its the same plug.




Thanks, but I see more than one plug in that pic. They can't all have been used on the same part. Did the plug style change over time or was a different plug used for different applications?


Scott Hollenbeck Administrator, Mustang 428 Cobra Jet Registry Owner, Muscle Car Research LLC 1970 Ford Mustang Mach 1 2006 Dodge Charger SRT8 1995 Chevrolet Impala SS
Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: sah62] #1120732
11/27/11 12:43 PM
11/27/11 12:43 PM
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The brass plug in Jules pic above is like the one I have on my valve from a 70 car. The valve looks just like the one in your artical except for the bottom plug. May have changed over time.

Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: THESHAKERPROJECT] #1120733
11/27/11 01:27 PM
11/27/11 01:27 PM
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Posts: 32
Virginia, USA
sah62 Offline OP
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Thanks for the insights! I've updated the article to note the different plugs and to note that you can avoid removing the seat if you have access to a compressor.


Scott Hollenbeck Administrator, Mustang 428 Cobra Jet Registry Owner, Muscle Car Research LLC 1970 Ford Mustang Mach 1 2006 Dodge Charger SRT8 1995 Chevrolet Impala SS
Re: 1970 - 1971 Mopar Brake Tube Tee Autopsy [Re: sah62] #1120734
11/28/11 01:18 PM
11/28/11 01:18 PM

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My end plug is stripped out. Is there anyone or anyplace that I can get a new end plug?







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