1972-02-01

GMC ASTRO AIRE REAR SUSPENSION 720106

The purpose of this paper is to describe the recent development by GMC, of an over-the-highway 34,000# tandem rear axle air suspension system for heavy duty truck/tractor applications.
Various design approaches for truck air suspensions during the past two decades, are touched upon to trace the evolution process leading to the present design philosophy which provides roll resistance comparable to steel leaf spring suspension systems.

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