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Old 06-08-2015, 09:46 PM   #11
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Originally Posted by arpipeliner View Post
As others have said it is with the camper on the TV.

When you unhook you can check it and it should be a lower PSI and you will know the range to have it at before hooking up again. Just remember each air check will drop the PSI about two to three PSI on mine.


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Exactly what he said! You definitely do not want to over inflate the airbag prior to adding the weight. My bags on my truck are 25psi unloaded. With the 5er hooked up, they are 50psi. Jerry


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Old 06-08-2015, 10:19 PM   #12
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My TrailAir is something close to 60psi unloaded and 90psi loaded. I have a hitch weight of 2,600lbs.Your mileage my be different.
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Old 06-09-2015, 01:05 PM   #13
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Trailair bag leaking?

Is it common for the air bag to leak a small amount during non use? Seems like every time I hook up the fiver the bag has leaked and needs to be aired up again. Sure does make a world of difference in ride when properly aired up though.

I've never checked the bag pressure when parked or towing so I'll make these measurements very soon. Pin weight on my Brookstone is ~3500lbs.

My el cheapo Harbor Freight compressor has a difficult time making over 65psi, tough to find 80psi air anywhere these days.
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Old 06-09-2015, 01:12 PM   #14
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My el cheapo Harbor Freight compressor has a difficult time making over 65psi, tough to find 80psi air anywhere these days.
Good bike pumps go up that high. My hybrid bike requires 95 psi or something like that. Worked beautifully for my TrailAir:




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Old 06-09-2015, 04:30 PM   #15
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Bike pump is too much work for me. I purchased a portable air tank from Harbor Freigth that holds 11 gallons of air at 125psi on sale. I fill this up at home and carry this in the bed of the truck. I have used the same tank since 2010 on both of my trailers that have the Trailair bag installed. I do not worry about the air pressure reading since it only requires you to adjust the bag pressure so the arrows line up to the end of the shock.

I have found out where one day I had to air up and the next day I had to air down change in elevation and temperature. So air pressure is not that really important to me.
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Old 06-09-2015, 05:09 PM   #16
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Bike pump is too much work for me. I purchased a portable air tank from Harbor Freigth that holds 11 gallons of air at 125psi on sale. I fill this up at home and carry this in the bed of the truck. I have used the same tank since 2010 on both of my trailers that have the Trailair bag installed. I do not worry about the air pressure reading since it only requires you to adjust the bag pressure so the arrows line up to the end of the shock.

I have found out where one day I had to air up and the next day I had to air down change in elevation and temperature. So air pressure is not that really important to me.
I carry a 3 gallon pancake compressor, also. But found it was pretty easy to throw the bike pump into the truck bed and climb in. With the dually, it's more of a hassle getting into/out of the bed than anything else!
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Old 06-10-2015, 10:10 AM   #17
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I carry a 3 gallon pancake compressor, also. But found it was pretty easy to throw the bike pump into the truck bed and climb in. With the dually, it's more of a hassle getting into/out of the bed than anything else!
Side note: I have purchased two "AMP BED STEPS" one is attached at the rear bumper and the other is attached on the LH side ahead of the rear tires; at the front corner of the pick-up box. Just open the step and climb on tire making it very easy to service the air bag or getting into the bed.
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Old 06-10-2015, 10:41 AM   #18
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Air up the Trailair bag after hitching up. You don't know the pressure needed to bring it to the proper point until you are hitched up. It should be close to 100 psi or you need a different size air bag to achieve the proper ride characteristics. If a dealer installed your pin box, it's probably got the wrong air bag. They usually put in the biggest one thinking more is better.
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Old 06-10-2015, 05:07 PM   #19
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Air gun pump?

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Originally Posted by ependydad View Post
Good bike pumps go up that high. My hybrid bike requires 95 psi or something like that. Worked beautifully for my TrailAir:
I have a typical Walmart bicycle pump but doubt I can get that kind of pressure out of it. My other hand pump is made for high pressure air guns up to 3300 psi. I'd have to come up with an adapter as it is set up for high pressure quick disconnect. It wouldn't bother me to pump a few minutes to get my air bag right.
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Old 06-10-2015, 05:42 PM   #20
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Lowes just offered a Husky inflator pump, 130 psi, 12 vdc or 120 vac, your choice, $25. Why would you mess with something complicated?
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