BAC Forum
General Boards => Technical Support => Topic started by: Duane Kunze on October 09, 2025, 08:35:19 PM
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2000 Marquis
Does anyone have experience accessing this valve for service. It is mounted up against floor, and very difficult to access. I was told it has to be accessed from inside the coach , by disconnecting the pedal assembly and removing the carpet, etc. Has anyone done this. It is leaking air. Thanks for your input.
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Duane
The treadle valve is not easy to get to or replace.
On the inside of the coach you will find three bolts in the foot pedal assembly which go through the pedal bracket and down through the floor securing the treadle valve to the floor and bracket.
The easiest way to replace the valve is to remove those three bolts which will allow you to get the valve down far enough to remove the air lines and change the valve .
There are a couple of common faults mostly caused by dirt or corrosion.
Often the foot pedal will stick on its hedge point or dirt will cause the plunger to stick or jamb.
The brake valve should be a bendix E12 .
It may be a good idea to disassemble the valve and clean and serviced it
This is a link to a repair maintenance kit
https://mpparts.com/part/bendix-108367-brake-valve-repair-kit-e-12-aftermarket-replacement-108367
This is a link to the service manual for the valve
https://www.google.com/url?sa=j&url=https%3A%2F%2Fwww.bendixvrc.com%2FitemDisplay.asp%3FdocumentID%3D4462&uct=1700847382&usg=WssROBNvIC8Hd0dc7f_OSf1vhns.&opi=89978449&ved=2ahUKEwj2nYLPm5iQAxUDQLAAHbldBOMQwtwHKAB6BAgBEAE
Eric
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Thank you Eric for this information. Super helpful, exactly what I was hoping for. Appreciate you taking the time .
Duane