Bentley Tech Tips

Suspension performance suffers if they’re not in working order.

Air suspensions cushion the ride for drivers, vehicles and loads. Among their components are the springs themselves and shock absorbers, which help control the movement of the bags and the rest of the suspension. These parts are subject to wear and aging, and must be regularly inspected and repaired or replaced when necessary.

The American Trucking Associations’ Technology & Maintenance Council recently revised its Recommended Practice 643A, Air Ride Suspension Maintenance Guidelines.

“Generally speaking, air springs are very durable components,” says John Healy with Stemco, which offers Goodyear brand air springs.

Because they’re made of rubber, air bags usually “age out” before they wear out, notes Dave Vanette, new business development manager at Firestone Industrial Products. “This aging out process has a lot to do with the heat history of the part and exposure to ozone,” he explains. If an air spring is run predominately where the average temperature is high, it accelerates this process.

Read the full truckinginfo.com article here.

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