Air Bag question

[Rexsname]

We just recently bought a 2002 Dodge 1500 long bed pick up. It is fitted with air bags on the rear axle to help with the load. I 'think' I remember that the minimum air pressure should be not less than 10psi but I don't know where I hear or read this little nugget. I can see no brand name on the bags or brackets so, no help there.


REX

 

[brian90744]

Rex,
your right, see pic.
brian

We just recently bought a 2002 Dodge 1500 long bed pick up. It is fitted with air bags on the rear axle to help with the load. I 'think' I remember that the minimum air pressure should be not less than 10psi but I don't know where I hear or read this little nugget. I can see no brand name on the bags or brackets so, no help there.


REX

 

[Bayou Boy]

For another datapoint, my firestone bags have 5psi as the minimum. I think it's more important just not to have them empty than to have a particular pressure in them.

 

[Rexsname]

Thank you so much!
REX

 

[Buliwyf]

Kinda depends how they were installed. I set mine to max length recommended. As far as the plates could go. Basicly, when your suspension compresses for a pothole or something, when the bag gets squished, you don't want it to fold up and collapse on itself. That'll tear it.
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But most bags increase pressure when they're squished enough so that this really is a non-issue. 5psi is plenty.
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The new Airlift premium bags have a Timbren style bumper inside them. This reduces volume alot. And they'll increase pressure rapidly when compressed. So those bags are good down to zero pressure as long as your sealed up (don't remove the valve cores or pop the lines off). They also act very progressive when loaded and you hit a bump, but still very soft on small bumps. Very nice bags, and a good upgrade.