Community Forums

dreamer · 03-24-2013, 08:55 AM

Does anyone want to explain the function of the front and rear air tanks?

We stopped for lunch and upon our return to the motorhome the rear air bags seemed to have deflated and the front ones didn't. The gauges indicated 60 # in the rear tank and 125 # in the front tank. After looking for any obvious problems and not seeing any, started it up and everything aired up to normal. Shut if off and listened for any leaks and heard no air leaks, both gauges stayed up. I haven't been able to reproduce the problem and am wondering what was going on. It was very windy that day and the motorhome was rocking back and forth while parked, would the leveling function of the airbags caused this with the key off? Any ideas? Thanks.

dreamer.

Pusherman · 03-24-2013, 04:06 PM

If it's losing air that fast, you have a leak. But don't worry, as the air compressor is obviously keeping up with the leak. It should be safe to drive.

My air bags stay up for days, as do my air pressures. If I lower my jacks, now that's another story, as it dumps the air bags.

Wizard · 03-24-2013, 06:59 PM

I'm not an expert, but I do know that if I park really unlevel, my chassis will bleed air from some of the bags, I believe it's trying to level the MH, otherwise as Pusherman states it will sometimes stay up for days.

TRAILERKING · 03-24-2013, 07:06 PM

You say it was rocking in the strong wind. It is a mechanical linkage on the ride height valve so yes it could have consumed air and dropped during the rocking in the wind and the engine not running.

dreamer · 03-25-2013, 08:17 AM

Thanks for the replies, I see where the leveling system could give me the situation I had, that was what I was thinking too.

dreamer.

MaverickBBD · 03-25-2013, 11:27 AM

You do know you have five air tanks don't you? Only two gauges on the dash labeled front and rear. The two cylinder looking things under you coach that look like two air tanks are actually compartmentalized to make five tanks. Mike Cody at Camp Freightliner spends a lot of time hitting this message home.

Now for the air bags. If you look under the coach you will see a rod with a loop on both ends. One end is attached to a lever that opens and closes the air valve to the bag. You should have three of these. One is for both front OR both rear air bags. The other two are individuals. Check to see if these are sticking and hanging up.

dreamer · 03-25-2013, 11:37 AM

Quote:

Originally Posted by MaverickBBD

You do know you have five air tanks don't you? Only two gauges on the dash labeled front and rear. The two cylinder looking things under you coach that look like two air tanks are actually compartmentalized to make five tanks. Mike Cody at Camp Freightliner spends a lot of time hitting this message home.

Now for the air bags. If you look under the coach you will see a rod with a loop on both ends. One end is attached to a lever that opens and closes the air valve to the bag. You should have three of these. One is for both front OR both rear air bags. The other two are individuals. Check to see if these are sticking and hanging up.

Didn't know I had 5 air tanks. Could you explain their function? Thanks.

dreamer.

MaverickBBD · 03-25-2013, 12:20 PM

You have a wet tank, two ping tanks (with lanyards probably taped to top of tank) a primary tank and a secondary tank (labeled front and rear on dash). Why they are so labeled I don't know. Hope the crude picture helps.