Location of Air Tank Drains

[Stolaas]

purge valve rebuild kit

Does anyone have a part number handy? I've searched everywhere and seems MCI made has used several dryer models. I went to the NAPA site but nothing came up with just text searching.  MCI website doesn't help because I can't access anything...  There used to be some sites for model specific busses but those seem to of disappeared or the host of those sites no longer maintaining them.

Thanks for all the help.  Want to get the part ordered so next time I'm in Huntsville I can repair it.

[lostagain]

MC9 probably has a AD9 dryer. To be sure, take the purge valve assembly off and go to a truck parts store. They will have it on the shelf. Very common part.

JC

[buswarrior]

In the pic at thread beginning, the air drier is tall.

AD2 air drier would be my bet.

MCI just kept using them, and using them, and using them...

Stolaas, you really need to pull off the existing part and take it to the local truck parts place so you only take one trip.

Call ahead/around to be sure they have one in stock to compare to. The mechanical sizing is the same for 12 and 24 volt models. You may have to wait for a 24 volt to be ordered in, unless there is a pocket of obscure demand in your area and they have them in stock.

happy coaching!
buswarrior

[bevans6]

I happen to have a Bendix AD-2 purge valve kit in my hand, awaiting warmer weather for an install.  Bendix part number 287053N.  Does NOT include anything related to the heater except for a new rubber boot to cover the wire connection, contains only the instruction sheet, various seals, springs, silicone grease and O-rings.  It was ordered from Bendix by my local truck parts place in Truro, Nova Scotia, no problems, in stock at the warehouse.  Cheap.

Edit;  if you download the AD-1 and AD-2 manual sheet PDF from Bendix (google it) the last page has all the rebuild kit numbers, including the thermostat kit, and several others.  And instructions.

[Jim Eh.]

http://www.bendix.com/en/servicessupport/documentlibrary/doclib_1.jsp

Enter "dryer" in the search box

Page 4

TCH-008-000   AD-2 AIR DRYER SERVICING

Select download

[Stolaas]

Wanted to show a picture of the Purge valve in case anyone in the future would like to know what it looks like.  Really easy to get off and got the rebuild kit online.  Had to dig a trench from the front of the bus to get to the location directly behind the front axel.

Works great now.  Only problem is now there is some kind of loud purge at the rear keeping the bus from building to 120 psi to allow the front purge to operate.  I took a video of the sound from the engine compartment.  Was happening just like a purge every minute or so, even when I killed the engine it still continued every minute for about four or more cycles till the rear end was deflated.  Front bags still had air...

[Stolaas]

Video of the rear Purge?  I can't tell wear it is coming from or where the rear tank might be if it is coming from there.  The bus is drivable now at least, got it moved out of the yard.  FYI it is for sale with Offer

https://www.dropbox.com/s/hwjcrl8nrkmf49j/IMG_1850.MOV?dl=0

[Paul S]

I figure there is much dirty water to be drained in my immediate future...