Hendrickson Truck Commercial Vehicle Systems introduced the Progressive Load Spring for Haulmaax vocational rear suspension system. The PLS is an elastomeric spring that works in concert with the bolster springs in Hendrickson’s Vari-Rate system.
The PLS replaces the previously equipped auxiliary load spring and reduces the load spring shims from three to two.
The new PLS will improve the Haulmaax rear suspension system by providing key advancements in ride quality and stability, says the Illinois-based company.
As payload increases, the spring further engages and functions together with the rubber bolster springs to provide additional stability. The PLS’s constant engagement also eliminates the need for shim adjustments for most applications, resulting in reduced maintenance and lowered cost.