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Air Leak from air dryer in 1984 dm688sx dump Tri axle


Monk31

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When I start truck up in the morning air leaks from the air dryer causing air pressure not to raise past 30psi . I give a few taps with a 3lb hammer and the air leaks stops and pressure builds up and will work for the rest of the day occasionally I will have to tap dryer after I had been shut down wondering why it is happen how to fix maybe or should I just replace Mack told me the carry a smaller air dryer in place of the old long air dryer I currently have and said some plumbing or air hose might have to be done . Any ideas or suggestions ? Thanks for any responses

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Edited by Monk31
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How do you know that it is discontinued if you don't know what it is? Make\model

I would bet that a rebuild kit is available if you took a picture and posted it to get it identified.

If you can't post a picture for us to respond intelligently and help you than save the electrons and just replace it with a new one

Robert

"I reject your reality and substitute my own."

 

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As stated previously, the Bendix AD9 (reman) is a cheap alternative and they are good dryers. Another good dryer is the Bendix ADIP, it costs a little more than the AD9 but it has a spin on replacement desiccant filter. Much easier to replace than disassembling to replace a descant filter like on the AD9.

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