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Old 06-20-2017, 11:46 AM   #1
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Join Date: Oct 2015
Location: Fulltiming beginning Dec 7
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Air bag/Suspension Issues

Greetings everyone. We have a 2008 Newmar MountainAire 4523. We've had several routine issues we've dealt with but I think we have our first major issue. We were driving from Indy to Cincy and the road was horrible. After cincy on our way to Kentucky I heard something and stopped and the Newmar flap was dragging - held on by one screw. We heard a hissing sound. Pulled in to truck repair shop and they took off Newmar flap and said there was hole in airbag.
Ever since it has ridden rough and while the airbags fill up they are at varying pressures.
I have it in the shop now at a reputable Newmar dealer. They are not sure it is airbag - said it could be any number of things related to the air suspension systems. It sits very low to the ground.
I'm just looking for any input/advice/questions to ask as I talk with the service people. Thanks for any help you can give.

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Old 06-20-2017, 01:32 PM   #2
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Join Date: Nov 2013
Posts: 347
It is possible that one of the ride height adjustment rods fell off and therefore the bags will not air up. I had this happen to me on a brand new 2005 Dutch Star, I crawled under the coach replaced it and the coach aired up normal.

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Old 06-20-2017, 01:32 PM   #3
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Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 18,633
Phone the chassis manufacturer , Freightliner or Spartan ; and get them to e mail you an air system diagram for your coach , anyone trying to service the system will need it . Have your serial number handy.

Freightliner , free help line . 1-800-385-4357
Spartan Motor Home Support . 1-800-543-4277

Was there an air bag replaced ?
The low air pressure , do you have multiple air gauges on your suspension system?
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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Old 06-20-2017, 05:04 PM   #4
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We have a 04 Essex with a Spartan K2 chassis which should be the same as your MA. We were at Spartan and they replaced our drive and front air bags and since they didn't have tag bags I replaced them and all the shocks. Our air bags were very cracked and after 12 years and 130K miles that made sense. The ride height valve which you have 2 in the front would be the easiest to replace. If low on one side that could either the bag or ride height valve. The rod sometimes comes of because the rubber bushing come off or brakes which is easy to replace. I bought some extras because we have had both the ride valve and the rubber bushing come apart. Real job replacing air bags. Do need to set ride height if replacing valve. On our coach 9 inches is front ride height adjustment.
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Old 06-20-2017, 05:45 PM   #5
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Location: British Columbia
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In the compartment below the driver you will find the Spartan electrical connections, breakers and fuses. There are one or two wires that may be marked as Hadley air. Unplug these and re-plug them into their connections. They can tend to oxide and fail to make a good connection. Re-plugging these can bring them back to life. I had this issue on my King Aire.

Hope you get everything working properly.

Peter - Doctor of Mixology
KADB 2013
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