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Installing air springs, hose question.

Sycostang67
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Sycostang67

Sycostang67

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I ordered a Firestone air spring kit for my truck, installation appears pretty straight forward.  I had a question about the air hose routing though.  I got the optional "T" fitting as I mostly need the kit for leveling while pulling a trailer.  I want to mount the schrader valve near my tool box on the passenger side of the truck close to my compressor for quick easy filling.  Will it matter that the air lines from the bags to the "T" are different lengths or do I need to have them equal with a central meeting point?

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Tractorman

Tractorman

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3 hours ago, Sycostang67 said:

I got the optional "T" fitting as I mostly need the kit for leveling while pulling a trailer. 

 

Personally, I would not join the two rear airbags together with a T fitting.  If they are joined, then truck lean will be accelerated while traveling through a curve because air will be transferred from one airbag to the other during the travel through the curve.  The last thing I would want is additional body roll on a winding road while towing.

 

- John

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Dieselfuture

Dieselfuture

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Keep them separate no T . Length of lines doesn't matter. I ran mine to rear lisence plate bottom holes. Someday I'll get some solenoids to operate it from inside the cab, already have on board air and rear bumper acts as a tank. Just need time and will now. You can even see my air coupler sticking on the bottom side of the bumper next to rear camera. IMG_20201031_090323.jpg.7ba6f1ec66a00798701559b3ac635304.jpg

I love my bags, not that I need them much but nice when I do. 

20190110_183001.jpg.18a5e68964d924c90abe3724b17125b2.jpg

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Royal Squire

Royal Squire

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33 minutes ago, Dieselfuture said:

Keep them separate no T . Length of lines doesn't matter. I ran mine to rear lisence plate bottom holes. Someday I'll get some solenoids to operate it from inside the cab, already have on board air and rear bumper acts as a tank. Just need time and will now. You can even see my air coupler sticking on the bottom side of the bumper next to rear camera. IMG_20201031_090323.jpg.7ba6f1ec66a00798701559b3ac635304.jpg

I love my bags, not that I need them much but nice when I do. 

20190110_183001.jpg.18a5e68964d924c90abe3724b17125b2.jpg

Interesting license plate 

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AH64ID

AH64ID

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As others have said do not combine them with a T. 

 

Nearly everyone I know that has been unhappy with airbag performance has been unhappy for two reasons, 1 is plumbed together, the other is overinflating them. 

 

Keeping the separate not only allows for side-side adjustment but it's also a form of vehicle anti-sway as the spring rates change as you go into a corner making the outside spring stiffer and the inside spring softer. 

 

In terms of air pressure be sure you are letting the leaf springs still carry some payload. Let the truck sag 1-1.5" and then use the airbags to keep it there. The will provide the best ride and vehicle stability while towing. 

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Sycostang67

Sycostang67

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Well I'm glad I asked, I'll leave them separate then.  Still gonna run them up to the front of the bed so I don't have to uncoil my air hose every time I need to fill them.  One other question though.  When not in use, do I just leave the bags empty or should I leave some air in them?    

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01cummins4ever

01cummins4ever

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When fully loaded with my fifth wheel I have the rear end loaded to the max on pin weight, I have never had to go above 60 psi on the bags to level things out, when empty I generally just keep the minimum of about 5 psi. in the bags,  you will like having these, it really helps on the heavy loads to keeping it level and reducing sway

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Dieselfuture

Dieselfuture

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On 10/31/2020 at 9:45 AM, Royal Squire said:

Interesting license plate 

Yeah I'm not sure anymore where I live, seems common sense is not common and I just don't seem to follow the crowd for the most part, plus I've been called that more than once in my life, especially lately... so why not, can't go on serious all the time in this life. Plus DOT sent me new plates after 10 years it was a good time to upgrade. I wanted to get powerwagon on there but all the different combinations were taken in iowa, maybe you can get them yet in your states. I did it all on line, it was easy and then scheduled appointment to pick them up when they were available. I came up with lots of different themes, but kinda like the whole hillbilly one. Matches my sticker by the exhaust, not sure if anyone notice that one. 

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IBMobile

IBMobile

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You better stay out of Des Moines.  Some "snowflake"  might see it and complain to the state DMV that you're making fun of people with low I Qs then they will have to take the plate back because you offended someone.   It happened here in California when someone had their initials JAP2665.png.7639da8d11715f27b57d0b65e265799f.pngLTP  on the plate.  

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Dieselfuture

Dieselfuture

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46 minutes ago, IBMobile said:

You better stay out of Des Moines.  Some "snowflake"  might see it and complain to the state DMV that you're making fun of people with low I Qs then they will have to take the plate back because you offended someone.   It happened here in California when someone had their initials JAP2665.png.7639da8d11715f27b57d0b65e265799f.pngLTP  on the plate.  

It seems that we're getting closer to the theme in move idiacrocy. 

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Mopar1973Man

Mopar1973Man

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Late to the conversation but... If I was to upgrade to air bag I would do a in cab controller that is separated left and right controls. I had a job years ago where I was going to install a system like this then @MoparMom went into the hospital with kidney failure. I lost the job...

 

There is in cab controllers for air bags so you can do everything in cab and not have ot adjust left and right fighting with a tire gauge and air hose.

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Dieselfuture

Dieselfuture

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8 minutes ago, Mopar1973Man said:

There is in cab controllers for air bags so you can do everything in cab and not have ot adjust left and right fighting with a tire gauge and air hose

Do you have any leads by a chance, I'm thinking about doing it this winter for a project. Just wasn't sure how many gauges and switches and solenoids I need. I have one gauge already, guessing 2 is enough. One for psi in the tank and the other to monitor air bags. 

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Mopar1973Man

Mopar1973Man

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Just need to have the controller so when the switch is set for left your looking at left side pressures. Then flip to the right side now the gauge sees the right side pressures. So a singlwe switch and single gauge is fine. This allows for offset pressure for like your heavy one side you can adjust for the offset left and right weights then while you roll. 

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Dieselfuture

Dieselfuture

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Works good just wish the gauge was more accurate about 3-4 psi off digital and scale a 100 instead of 200 for better accuracy. Other than that I like it. Had to run 3 lines in the cab on my set up, one that I tied in to the air tank ( my rear bumper ) and 2 to the bags. I just used T's on the bags that way I can still use schrader valves or the switches. Btw these switches bleed air out in to the cab when you lower pressure, which is I figured they would do. To mount I used a long hose clamp and attached it to the rear view camera monitor. There are posts missing including a link to this switch, here is number for the guage set up, couldn't attach the link.

26229-200 psi airlift

IMG_20201106_202727.jpg.9a2c5429803d6c85de585b78ab5aa4b7.jpg

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