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Reply to "valve assembly brake pressure differential"

Yes, I have cracked one by over tightening one of the tube nuts. The shuttle valve is brass and the steel nuts can readily crack the housing and cause it to leak.
I don’t think they are repairable.

I once bought a used one and it was already cracked. Someone had overtightened the brake light switch and cracked the housing.

Mustangs and other cars use a shuttle valve that looks the same as Pantera but the thread sizes for the tube nuts and brake light switch are different.

Last edited by stevebuchanan
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