Re: 70 amx brake warning switch

[neprocap@xxxxxxx]

It is called a brake pressure differential warning switch. In theory it is supposed to allow pressure to the front or rear brakes in the event that either or fail. So if your front brakes fail, the car will be able to stop with the rear brakes or visa versa. The horizontal piston is supposed to move, this is what defers the pressure. When cleaning this valve you should always remove the switch (plastic cap, top center) to avoid cutting the actuating pin in half. If your brake light on the dash of your car is on all the time, this switch is probably the culprit.



On January 10, 2006 Michael Verbel wrote:

> Hi all looking for some more help on my neighbor's ' 70 AMX. On the passenger side firewall is a brass block, 4 brake lines go in and it has a switch and two plugs at opposite ends shaped like a H . I believe it's to let you know if you lose front or rear brakes. I removed it (we're changing all the lines and hoses) and took out the plugs on the sides to clean it out. There is a pin (horizontal) that I believe should move. If it doesn't move is this thing wasted?


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