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Phil and Ginni Lyons

Phil Lyons has been a Bus Nut and moderator of the BCM forum for many years. He and his wife Ginni live in the central highlands of Arizona.  Phil’s day job is in IT Security ...

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Phil and Ginni Lyons
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Why Is My Air Dryer Hissing? A Busnut’s Troubleshooting Journey

Post by: Glennman

I have a series of green air lines fitted together below the driver’s seat that were apparently once connected to an air dryer. On the wall next to them, where they are connected, there is a label showing the valve directions for on/off. However, there are no valves, only fittings, where it appears that someone took the dryer out and bypassed it by connecting the hoses together. What would that air dryer look like, and is it the kind that requires a filter assembly? I would like to install another one and get it back to OEM. Any thoughts? (My bus is a 2002 MCI D4500, 12.7 Detroit)

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