I have an air leak wear my finger is pointing, which I assume is the pop off valve. Sometimes when it blows off it stops leaking, but a lot of the time it does. Can something be replaced or is the whole dryer bad?
Air dryer pop off valve leaking
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by OldeSkool, Sep 7, 2022.
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Big Road Skateboard Thanks this.
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you need to get the kit. make sure there is no air in the system.
Big Road Skateboard Thanks this. -
Most cases the valve spool gets gunked up and sticks.
Big Road Skateboard Thanks this. -
Might as well change the desiccator cartridge in the dryer while you're at it.Big Road Skateboard Thanks this. -
Those things really shouldn’t go bad if the system is functioning efficient and kept clean. It’s always a good idea to spray some brake clean through them a few times a year. The dirt that sticks to them on the outside is just as bad as the oil from inside.
How many guys actually think to scrub them clean with dawn or degreaser when washing the truck or at least hit them with water out a garden hose to keep dirt and grease buildup at minimum? Kinda like washing out the brake dust from the drums and shoes, hardly ever done till replacement time.OldeSkool Thanks this. -
Well I replaced it. It was nasty corroded up in there. Broke the old one all up getting it out. It still leaks despite the fact I’ve took it back out and cleaned it as well as I can so I’m replacing the whole dryer. Went from $65 to $612 lol. At least I can do it myself.
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stop throwing money at it and find the cause. does your compressor unload when it comes up to purge? pull off the compressor hose and find out.
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