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Air Springs for Towing

24 messages,  Last post on Nov 19, 2009 at 1:29 PM

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#20 of 24 Firestone Coil-Rite Air Springs 4170 by ronkennedy61 Nov 01, 2009 (12:38 pm)
Plan to order from truckspring.com for $101.59 for self-install on 09 Santa Fe or have Les Schwab do all for #219.30. Appears Air Lift does not offer kit for 07-09 . Appreciate advice on where to drill for inflation valves, psi for when not carrying load, etc. Appears that kit now includes rubber grommets but called "flat washers"? Replies to this message: notlawd (Nov 01, 2009 8:21 pm)
#21 of 24 Re: Firestone Coil-Rite Air Springs 4170 [ronkennedy61] by notlawd Nov 01, 2009 (8:21 pm)
Replying to: ronkennedy61 (Nov 01, 2009 12:38 pm) I placed the valves on the 7-pin elec. hookup mounting bracket. One on each side above the plug, I run about 7 psi when not towing and 12-18 when towing. Make sure you keep some pressure above 5 psi at all times to avoid damage to the air bags.
#22 of 24 firestone coil-rite air springs 4170 by ronkennedy61 Nov 11, 2009 (10:41 am)
Decided to have Les Schwab install and glad I did as took them a long time. They used existing holes behind left rear mud flap for valves as I do not have bracket mentioned by notlawd. Very slow leak on left bag so back to Schwab soon. They had great difficulty removing jounce bumpers and did not like the sharp angle the air line has to take coming out of the mount, and if this results in pinching, they want to install a right angle fitting at no extra charge. As others have mentioned, be very careful adding air to these low pressure bags, as you will overinflate almost instantly with a compressor. Replies to this message: regan9663 (Nov 11, 2009 10:54 am)
#23 of 24 Re: firestone coil-rite air springs 4170 [ronkennedy61] by regan9663 Nov 11, 2009 (10:54 am)
Replying to: ronkennedy61 (Nov 11, 2009 10:41 am) I concur with you on the issue regarding the angle of the line as it comes out the jounce bumper and pinching the line. The instructions do not accurately reflect the angle of the suspension arm in relation to the bag and coil spring. I am having to replace one of my bags due to the line finally splitting because of the pinching and a small leak developing from the valve on top of the bag. I'm going to try and enlarge the hole where the jounce bumper bolt threads into and hope that this provide more flexibility in the line as the coil spring is compressed and eliminate the pinching issue with the air line.
#24 of 24 Firestone Coil-Rite Air Springs 4170 by ronkennedy61 Nov 19, 2009 (1:29 pm)
for regan9663 etal. Les Schwab had to drill a 3/8" hole to reduce the pinching, they fixed the leak on the left side. and no more leaks after two weeks, but I have my fingers crossed. Now I have fairly loud creaking in the rear which may or may not be the air bags since I am more sensitive to rear noises after the air bag installation. I wonder if anyone else has noticed this noise. I carry 11psi in the bags when not pulling the trailer.

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