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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: Ross on May 16, 2006, 11:07:01 AM

Title: Servicing air dryer
Post by: Ross on May 16, 2006, 11:07:01 AM
Guys...Is there a service "kit" available for the air dryer from MCI parts?  Anyone have the part number?  I'm talking about the dryer between the two front wheels on an MC9.  I looked through the parts manual and found listing for a number of different air dryers and/or automatic air tank drains.
Title: Re: Servicing air dryer
Post by: gumpy on May 16, 2006, 11:26:03 AM
There is a kit. I'm thinking my dryer is an AD-2 (someone will beat me up if that's incorrect). I got my kit from C&J Bus Repair (www.cjbusrepair.com - ask for JD). You'll need to provide the dessicant core. Check for a kit at a local truck repair shop, also, as I think these are standard items, not specific to buses.

Title: Re: Servicing air dryer
Post by: tomhamrick on May 16, 2006, 12:07:14 PM
I found all the replacment parts at NAPA and cheaper than anywhere else I could find. You can find them also at napaonline.com.
Title: Re: Servicing air dryer
Post by: Sammy on May 16, 2006, 12:36:21 PM
Ross, your local truck parts house will have everything you need too.
Best of luck with your repair.
Sammy  8)
Title: Re: Servicing air dryer
Post by: ChuckMC8 on May 16, 2006, 01:10:10 PM
Ross, I think its easier to remove the dryer from the bus to work on it. When you get your decissant, be sure to get a kit to rebuild the purge valve as well.
    The Bendix website has great info on servicing the AD-2 dryer, as well as a toll free help line that you can get correct advise.
 One thing the Bendix tech told me is that it would be better to update to an AD-9 dryer instead or rebuilding the AD-2.
If you decided to persue that route, the AD-9 can be picked up on ebay usually for $50, and then rebuilding it cost comparable to fixing your AD-2.
 Also, check the current to the 24V heater on the dryer. Mine was mis-wired (imagine that!) and power was on any time the main dosconnect was on.
   In retrospect, I would have bought the 9 dryer, however,my AD-2 works properly now-hope this helps-Chuck Lott
Title: Re: Servicing air dryer
Post by: Ross on May 16, 2006, 01:50:06 PM
I found the MCI number so I can order it from MCI parts.  Need some windshield rubber anyway.  In my local search, everyone asked "Are you sure it's not an AD-9?"  Maybe I'll go that route.  The truck shop siad thay usually just upgrade which is why they don't keep parts around for the old ones.  I assume the 9 works the same way as the 2.  It has a purge that blows off at around 120PSI, right?
Title: Re: Servicing air dryer
Post by: NCbob on May 16, 2006, 04:01:08 PM
On the windshield rubber...Is this getting redundant?  Call Luke @ US Coach. 1-888-262-2434.

I just bought two windshield gaskets from him (don't forget the lock bead) and he's was as, if not more, competitive than MCI or anyone else I spoke with.  MCI wanted to sell me bulk (read continous) gasket which my glass man said couldn't be sealed in the mitred corner.

I might be a "newbie" but I've very quickly learned to lean on the expertise of Luke and his gang.  Can't be beat!

NCbob
Title: Re: Servicing air dryer
Post by: Ross on May 16, 2006, 04:33:44 PM
On the windshield rubber...Is this getting redundant?  Call Luke @ US Coach. 1-888-262-2434.



How much were they from Luke?  They are $47.79 each from MCI parts and $20.85 for 30 feet of lock bead...and free shipping over $100.
Title: Re: Servicing air dryer
Post by: tomhamrick on May 17, 2006, 12:25:48 PM
If I remember correctly the AD-9 is shorter and fatter the and AD-2 and it would not fit as well in my location on the Eagle model 10. Before changing make sure it will fit okay in your location.
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