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Old 05-05-2015, 09:21 PM   #11
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The air coupler in your genset compartment is used primarily for towing. If you ever need to be towed the driver will hook his air line to your coupler so your air brakes will have the proper air pressure to keep them from locking up. It is also a handy air source for topping off your tires, bicycles, rafts etc.
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Old 05-06-2015, 07:37 AM   #12
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The air coupler in your genset compartment is used primarily for towing. If you ever need to be towed the driver will hook his air line to your coupler so your air brakes will have the proper air pressure to keep them from locking up. It is also a handy air source for topping off your tires, bicycles, rafts etc.

Wow now that you mentioned it that makes sense. I always thought it was for airing up none nitrogen filled tires. Never considered towing aspect thanks for the enlightenment.
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Old 05-06-2015, 08:43 AM   #13
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Don't use it to fill your tires. The air that comes out of it is not compatible with the nitrogen you put in your tires. I think it's a different kind of nitrogen.
The primary use of nitrogen in tires is because it is a large molecule and does not seep through the somewhat porous rubber tires. Plain old air is 78% nitrogen. Check out the differences between air filled tires versus nitrogen filled......

Should You Fill Your Car's Tires With Nitrogen?

If you spent a lot of money filling your tires with nitrogen, then do not use the MH's air coupling. Otherwise, the air coupling can be used for topping off your MH's tires.
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Old 05-06-2015, 09:42 AM   #14
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Since the oxygen molecules in air are "smaller" then over time as the oxygen seeps out and you refill your tires with air to bring them to proper pressure you would tangentially approach having just nitrogen in your tires.
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Old 05-06-2015, 09:51 AM   #15
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As you can tell I don't buy into the Nitrogen hype!
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Old 05-06-2015, 02:13 PM   #16
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Originally Posted by RodneyD View Post
The air coupler in your genset compartment is used primarily for towing. If you ever need to be towed the driver will hook his air line to your coupler so your air brakes will have the proper air pressure to keep them from locking up. It is also a handy air source for topping off your tires, bicycles, rafts etc.
If you ever have to be towed you have to tap into the air system at the air dryer. I know as I have been there. The air source by the generator will not work. Only for airing tires and other user air needs.
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Old 05-06-2015, 02:28 PM   #17
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If you ever have to be towed you have to tap into the air system at the air dryer. I know as I have been there. The air source by the generator will not work. Only for airing tires and other user air needs.
Oh and whys that?



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Old 05-06-2015, 03:47 PM   #18
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We have a 2015 38Rb. Does anyone know what size air coupler that is in the front generator compartment. I'm going to get a 50' hose this weekend.


Thanks in advance!
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Old 05-06-2015, 03:49 PM   #19
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There's several "sizes or should I say styles of couplers.
I'd take your coupler off to be sure you get the right one.

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Old 05-06-2015, 03:51 PM   #20
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