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Old 12-13-2015, 02:06 PM   #31
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Looks good!!!

2016 Sabre 36QBOK
2015 Ram 3500 CUMMINS

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2017 Dynamax Isata 4
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Old 12-13-2015, 02:17 PM   #32
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Location: KY
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Mine was a bolt in install as well. About an hours worth of work. I ran the lines to the licence plate. I got a cheapo compressor to inflate the bags as needed. I have a 12 volt plug in the rear of the truck bed. Super easy to use and very handy.
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I'm a little too truthful, I guess.
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Old 12-13-2015, 03:08 PM   #33
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Great job, now you can reap the benefits. Firestone has done a marvelous job of engineering the bags with no drilling required.
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Old 12-14-2015, 10:40 PM   #34
Join Date: Nov 2011
Location: Langley, BC
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Originally Posted by PenJoe View Post
Ditchooker, Firestone recommends a minimum of 10 lbs pressure in the bags to prevent bag damage. If the air lines have square cuts at the connections and fully seated into the connection, they should not leak. A little squirt of soapy dish water on the connections should tell you if they are leaking. Also check your fill valve as they sometimes leak if defective or not fully seated. The valve cap must also be in good condition and tight. I have been told that the cap is actually the part of the filler valve that prevent air from escaping. I have done 3 installs on different TVs over a 10 year period. The bags and connections have been trouble free.
My installation manual stated 5 psi minimum, so I am going with that. My profession as a diesel tech, I see those quick connect fittings on a daily basis over many different brands, and they are common to leak with low psi applications, but the convenience is hard to beat vs the old crush sleeve style fittings that always seem to be overtightened.

Originally Posted by PenJoe View Post
Not sure I understand what you are doing in paragraph 2. A single air valve with a tee airs both bags at the same time which is okay. Not clear on the ball valve or how one bag and the empty/closed sentence relates. If running empty, the bags should be filled a minimum of 10 lbs that has little effect on a comfortable ride. When running loaded or towing a heavy load, the bags should be aired to level front to rear. When we had a slide-in camper, the dealer recommended 60 lbs. and he was correct. For a TV pulling a fully loaded cargo trailer with 7,000 GVW, we generally run about 30-40 lbs in the bags. This is on 1500 series TVs with HD towing packages, which is about your equivalent. Never have we had the need to air to the maximum 100 lbs.
My Firestone Manual lists 1 psi=32lbs of weight. Knowing that my hitch weight is approx 850lbs, I fill up to 24 psi, and close the ball valve, and connect the trailer. Truck is pretty much dead level when all hooked up. (front axle is only 30lbs lighter with no air bags, so the WDH is good) I found that when I have the bags isolated (my initial install) on the rural rough roads driving to and from work, even at 5-7 psi, the ride was quite noticeably harsher, (my P rated tires are only @ 30 psi, so they are also soft - not towing ) especially with the sunk sections in the road. Once I linked the bags together with the T, and with one fill port, the ride was much less harsh (virtually the same as stock) and the suspension seemed to articulate much better on the rough roads when I had no load. My Tundra is not equipped with the TRD package, so it does not have the rear sway bar, but by closing the ball valve, I get improved sway control while towing on the curvy back roads.

'07 Toyota Tundra 5.7L DC 4x2
'16 Surveyor 226RBDS
Nights camped 2016 - 3
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