102c3 Air Tank Draining?

[Jcparmley]

Hello

I am new to this bus world.  I am looking to do some regular maintenance on the bus.  Ihave a MCI102c3.  I looked in my service manual for how to locate all the air tanks and I could only find a couple paragraphs that say to drain regularly. I also tried a search on this forum and the Internet but didn't find anything. The manual says my bus has 4 reservoir tanks.  One Wet, One Dry, One Park and one Accessory Suspension.  I was able to find one tank in the engine bay to the right of the compressor with a red arrow that says "drain daily".  But the drain is rusty and won't budge. Does anyone know what tank this is?   Of course the manual shows a pic of the location of the Park and Wet Reservoirs in the "front Bogie Area" but the picture is so poor I can't really tell where they are nor do I know where the "front Bogie Area" is.  My assumption is behind the spare wheel?  But I really have know idea.  So that is only three of the four reservoirs.  Does anyone know where the other reservoir may be on a 102c3?  Your help is greatly appreciated.

[Dave5Cs]

the two up front are in the middle between the wheel well. Park on curbside and the wet tank on driver side. The one in the back drivers or middle behind bay is your dry tank. In the front tool bay up front drivers side up near the ceiling of that bay is the accessory tank. One in the back that says drain daily is your ping tank that come off your compressor, generally just 5 to 8 inch long about a 1 inch piece of pipe with a drain at the bottom. HTH

[Jcparmley]

So there is 5 tanks including the ping tank? 

the two up front are in the middle between the wheel well. Park on curbside and the wet tank on driver side. The one in the back drivers or middle behind bay is your dry tank. In the front tool bay up front drivers side up near the ceiling of that bay is the accessory tank. One in the back that says drain daily is your ping tank that come off your compressor, generally just 5 to 8 inch long about a 1 inch piece of pipe with a drain at the bottom. HTH

[windtrader]

That 5th tank Dave refers to is a quite small cylinder. It comes directly after the air compressor pump. The manual calls it the discharge muffler.