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Old 04-13-2014, 11:28 AM   #1
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Air Dump

I have a 2008 Monaco Knight with a Air Dump Switch. Why did they put a Air Dump Switch in if they tell you to pump the brakes to dump the air. I can push the Air Dump and nothing happens. Do I have a bad dump switch? I see other MH that all the do is use the Air Dump Switch to dump and do not have to pump the brakes.
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Old 04-13-2014, 11:39 AM   #2
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If it's like my Country Coach the air dump is for the leveling system and pumping the brakes gets rid of the air brake pressure for service or checking.
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Old 04-13-2014, 11:43 AM   #3
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Are you using the air dump with the engine turned off? We need a little more info on what you are doing when the air won't dump. Pumping the brakes is not efficient way to do it and it can be annoying to neighbors especially if you're doing this at night.
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Old 04-13-2014, 11:46 AM   #4
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The Air Dump does Switch does nothing when I level and I have to pump the brakes to get rid of the air in the air bags so the chassis will drop.
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Old 04-13-2014, 11:50 AM   #5
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The engine is off. Should it be on or off. I do not like pumping the brakes, bad for the neighbors.
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Old 04-13-2014, 01:47 PM   #6
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I think I would give Monaco a call to see just how a Knight is supposed to level.
The Beaver Thunder always levels to the highest corner, meaning if the front is a little higher the front will basically drop all the way down. The only time I dump the air in the suspension is when I park it in storage and dumping the suspension air does not empty the service brake air system, they are separate systems.
My manual states to have engine running while leveling the coach.
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Old 04-13-2014, 01:57 PM   #7
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The engine is off. Should it be on or off. I do not like pumping the brakes, bad for the neighbors.
My air dump works but very slowly. It can take 3-4 minutes for it to fully dump. There is no big whoosh of air, it's a quiet hiss which is difficult to even hear from inside.
Pumping the brakes actually doesn't dump air from the suspension, only the air tanks. There is a non-return valve on the suspension so it will hold air even with empty air tanks.
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Old 04-13-2014, 02:47 PM   #8
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Thanks for the info. I will hold the Air Dump a little longer.
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Old 04-13-2014, 02:52 PM   #9
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Thanks for the info. I will hold the Air Dump a little longer.
Are you leaving your key I'm the acc. Position while holding the switch? You need to do that if you are not. You will hear a sound but may not be that loud and like another poster mentioned, it can take a couple of minutes.
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Old 04-13-2014, 03:05 PM   #10
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Yes, in acc. I am not holding the dump long enough because I did not hear the air escaping so I did not think it was working. When we leave Branson at the end of the month I will give it a try. Thanks for all the great info.
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Old 04-13-2014, 03:14 PM   #11
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I can hear the air dumping clearly if things are quiet inside. If I open the front door it's really loud! I always dump all the air before I level to get the front step as low as possible.
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Old 04-13-2014, 03:22 PM   #12
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Yes, in acc. I am not holding the dump long enough because I did not hear the air escaping so I did not think it was working. When we leave Branson at the end of the month I will give it a try. Thanks for all the great info.
I have a HR. Engine off but key to on, not ACC, press air dump while looking out front window. You can see the coach lower.
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Old 04-13-2014, 03:31 PM   #13
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air dump

On my 05 knight I take the air pressure down by pressing the emergency brake partially down. If you don't bring the pressure down the air bags will just fill back up again. Holding the dump button takes FOREVER.

FYI, on my unit even with the air pressure down the bags will not empty until the dump button is pressed
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Old 04-13-2014, 04:34 PM   #14
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Go to a truck shop and have them install a dump valve that works. My Providence dumps right away after tripping valve.
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