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| If they are e same as an STS, there isn't much to do to them.
Replace broken parts as needed.
They should be just truck air bags and truck suspension rods and valves. Get them from a truck shop and save 75% over what Hagie gets for the same part.
The towers should have bushings that DO need to be replaced from time to time, depending on use and grease frequency.
On our STS, the valves either work, or they don't. The control rods had the ends go once. We have blown a few bags and that's about it.
Mostly of our problems have been caused by foamer water getting into the air system.
We rarely have trouble, always keep a bag on hand, but haven't blown one in years. Valves, rods, governors and the like my truck shop stocks, so it's easy to replace them when needed.
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