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70 AMX combination valve

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Bill F View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bill F Quote  Post ReplyReply Direct Link To This Post Topic: 70 AMX combination valve
    Posted: Feb/13/2020 at 2:46pm
Who supplied the brake valve on the firewall?Would like to rebuild it while the car is apart. Looking on the muscle car research site and they list a few AMC applications but I'm not sure what I have for sure.
Bill Frazer
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ramblinrev View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote ramblinrev Quote  Post ReplyReply Direct Link To This Post Posted: Feb/13/2020 at 2:57pm
See this post, including an offer to rebuild them:


You're actually dealing with a Distribution block/Brake pressure differential switch. The 'combination valve', term applies better to the later AMC's which combined a Pressure differential switch and a Proportioning valve and the distribution block all in one!

If you do Advanced search, you'll likely find the answers you need.

Good luck!

74 Hornet Hatchback X twins
62 American Convertible (still worth the $50 I spent in 1973!)
70 AMX 360 4-speed
70 Javelin SST 390
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madams View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote madams Quote  Post ReplyReply Direct Link To This Post Posted: Feb/13/2020 at 6:00pm
I ordered the rebuild kit for the distribution block and rear propotioning valve from these guys and was happy with the results


I have installed the distribution block kit and it seems to work well on a 68 AMX.  It doesnt include the aluminum pistons and I had to rob one of the pistons from a second valve as one was too corroded.  Not too difficult to rebuild, just make sure you dont twist the o-rings as you put it together.  Follow the instructions to remove the switch plunger when ever you bleed the brakes or the plastic plunger will get broken (my bet is that the brake light circuit is faulty on most cars as it was broken on both valves i took apart).

I havent gotten around to the proportioning valve (for front disc - mounted near the rear axle).
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White70JavelinSST View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote White70JavelinSST Quote  Post ReplyReply Direct Link To This Post Posted: Feb/14/2020 at 9:34am
This link will get you to the site that the link in the above post won't


madams, there's one too many https:// in your link, when you use the link icon highlight the https:// in the window and delete it first, then paste the link in.
70 Javelin SST, second owner, purchased 1972
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