Bus won't air up

[buswarrior]

Get that fixed, the purge valve has fairly warned you...

When the trooper orders the tow truck on scene to remove your coach from the side of the road, you lose all cost control over this issue.

Tis the season, every vendor will have a supply of re-builts on the shelf, get this done before luck runs out!

Happy coaching!
Buswarrior

[luvrbus]

There is really nothing to rebuilding a air dryer a blind monkey can do one the AD-2 and AD-4's are real easy being you don't have the lines to deal with

[PP]

Jeez, now I'm in the same class as a blind monkey  Don F., the low temps are in the Cascades of central Oregon. It's been in the teens almost every night for several weeks now and barely reaches upper 40's during the day. They're expecting serious snow by this coming weekend. Now on the coast and 60 feels downright balmy. Thanks for all the advice. I'm leaning toward rebuilding my dryer since a blind monkey can do it. Just have to figure out which one I have and how many volts it uses 
Maybe I can find another blind monkey and we can put our heads together 
Will

[luvrbus]

LOL they are simple Will, the AD-9 are a little more complex

[bevans6]

In the coincidence department, I just picked up my brand new, direct from Bendix AD-2 purge valve rebuild kit for $25 (CDN).  The guy allowed as to how he can still get dessicant cartridges for it, but he said when you get tired of rebuilding it Bendix takes the AD-2 as a core on a new AD-9, and a new AD-9 with a core is around $200...    He said 24 volt heater was a little extra, and to make sure what size the connectors are because most buses he's sold air dryers for used a larger thread on the connectors than what he stocks for trucks.  Again, special order but no more expensive.

[luvrbus]

The AD-9's have a automatic thermostat just supply a hot feed and they do the rest,to me the old AD-2 is a lot easier to service than a AD-9 with all the bolts and they install a AD-9 in some of the worst places you can find   

[belfert]

Clifford is right about AD-9 dryers being in horrible locations.  Mine is stuffed into a space that is barely wider than the dryer.  I have removed it twice and man is it a pain laying on your back disconnecting air hoses and unbolting the dryer to remove it.

I rebuilt my purge valve with a kit and it leaked like crazy.  A rebuilt valve wasn't that much more so I just bought one and installed that instead.

[PP]

Couple of questions from the blind monkey here. Do I need to remove the entire unit to replace just the purge valve? And once the valve is removed, is it identifiable as to voltage, etc. when I go into NAPA with it?
Thanks in advance, Will

[luvrbus]

Nope just take the 3 retainer bolts if they are there disconnect the 1/4 in line from the governor remove the big snap ring and pop the assembly out of the housing watch the snap ring it can bite,the heater will be marked.You can buy the rebuilt complete purge assembly for under a 100 bucks the last one I got from FinditParts  

[PP]

Thanks Cliff. I think know which retainer bolts (phillips head screws x 3) and the airline that is connected on the bottom. The thing is still buried in thick sludge, so I will need to give it a good cleaning first but it sounds easy enough. Not sure if I'll be noticed by management if I'm crawling around under the bus here. Might have to wait until we move again. We'll see.
Will