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Troubleshooting A Roadmaster Even Brake Portable Braking System That Isn't Building Pressure

Question:

I have the Roadmaster Even Brake RM-9400 that I purchased in 2007. I have a 2007 Tiffin Phaeton and am towing a 2005 Honda CRV. Recently I noticed that after plugging the unit in it would build up pressure and shut off. When I push the test button it extends the piston out to move the brake pedal but then stops, lets out a small amount of compressed air apparently left in the cylinder and then doesnt re pressurize

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Expert Reply:

Based on the symptoms you've been experiencing with your Roadmaster Even Brake Portable Supplemental Braking System - Proportional # RM-9400 it sounds to me like your exhaust valve has failed and needs to be replaced. This is fairly common over time and can be replaced with part # RM-450601-50.

I've included a video below where David will walk you through replacing the exhaust valve on your Even Brake.

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Kevin C

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