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Old 11-04-2007, 01:09 PM   #1
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I have a 2005 Alpine motorcoach 40 foot after setting up the leveler jacks. I heard a dumping of air, went back to start the motor home to feel the airbags and the compressor would not start. Is there anyone that knows of a breaker or something that this coach has on it before I call a repair person.

I am not sure how to cancel this request for help, but I have now resolved the problem . Somebody repaired it and use it in proper fitting. They used a copper pipe compression fitting for a polyethylene which was not DOT approved. Thanks for all of your interests and help in trying to resolve this. One thing I have learned their air compressors on these are not like the ones on trucks. They are not as large and don't make the same amount of noise and don't put out the same amount of air so that was the reason I was unable to hear it working
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Old 11-04-2007, 01:09 PM   #2
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I have a 2005 Alpine motorcoach 40 foot after setting up the leveler jacks. I heard a dumping of air, went back to start the motor home to feel the airbags and the compressor would not start. Is there anyone that knows of a breaker or something that this coach has on it before I call a repair person.

I am not sure how to cancel this request for help, but I have now resolved the problem . Somebody repaired it and use it in proper fitting. They used a copper pipe compression fitting for a polyethylene which was not DOT approved. Thanks for all of your interests and help in trying to resolve this. One thing I have learned their air compressors on these are not like the ones on trucks. They are not as large and don't make the same amount of noise and don't put out the same amount of air so that was the reason I was unable to hear it working
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Old 11-04-2007, 05:14 PM   #3
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I'm not clear on what it is you were expecting that was not working. The air compressor is engine driven - did you start the engine? How did you determine the air compressor was not functioning? Did the dash gauge show air pressure increasing to a point sufficient to release the park brake and the low air pressure alarm to go off?
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Old 11-04-2007, 06:05 PM   #4
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Have you checked your owners manuals for information on how the leveling system operates. On mine when you initiate the leveling process, the air bags dump pressure to lower the coach before the leveling jacks activate and complete the leveling process. Deflating the air bags insures the jacks do not have to extend any more than necessary and helps compensate for an unlevel parking site. The air bags on my coach will not reinflate while the jacks are extended, yours are probably the same. The engine driven air compressor should operate as RV Roamer said but not inflate the air bags while the jacks are extended.
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Old 11-05-2007, 06:25 AM   #5
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yes I know the air automatically dumps when I originally set up. But when I retracted Jack's. Started the engine the pressure would not fill the airbags and let me released the emergency brake or should I say parking brake I was listening for the air compressor to kick on, but it never came ON as an ex-truck driver. I am quite familiar with air brakes and such. I have never seen an air compressor that is controlled by any type of a switch But with the motor home. It is so advanced and controlled by a computer, I thought maybe they would be something that I have missed that he compressor is not running when the engine is running. Otherwise I would hear air escaping if there is a leak or something. Is there something like a switch that controls a air-conditioner. That is magnetized at will turn it on and off? And I do not hear any blow by our air exhaust coming from the compressor. Like I have heard in the past. I have driven track for over 40 years and have quite a bit of experience with air compressors. I realize that the compressor is either gear driven our belt driven but I don't seem to be able to figure this one out
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Old 11-06-2007, 06:44 AM   #6
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OK, Mod, I guess you understand truck air systems! I can't "hear" my compressor "kick in" either - it is pretty much silent. Takes about two minutes to fill both air tanks enough to turn the low air alarm off (65 psi) and thus release the brakes and another 4+ minutes to raise the suspension to normal ride height.

Anyway, glad you got it fixed and are back on the road.
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