Importance

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Abstract

A tandem axle suspension wherein alignment of one axle relative to the other may be adjusted. The suspension includes a pair of spring hangers attached to each side of the chassis frame and a leaf spring assembly interconnecting each pair of spring hangers. Each leaf spring assembly includes a leaf with a spring eye at one end and a spring pin extending through the spring eye and through a transverse aperture in an aperture-providing insert rotatably mounted in the spring hanger to which the end of the leaf spring with the spring eye is interconnected. The spring hanger in which the insert is mounted has an upper portion by which it is attached to the vehicle chassis frame and depending portion having a transverse opening in which the insert is rotatably mounted. The depending portion is transversely bifurcated by a slot extending upwrdly into the transverse opening. A horizontal bolt-receiving opening extends fore-and-aft through the depending portion and fore-and-aft through an upwardly extending fore-and-aft slot in the lower portion of the insert. A clamping bolt extends through the bolt-receiving opening. The fore-and-aft slot in the insert straddles the calmping bolt with sufficient upward clearance to permit the insert to be rotated through a substantial angle. The outboard side of the insert has a tool-engageable formation thereon. Since the aperture in the insert is eccentrically located fore-and-aft adjustment between the leaf spring and the chassis may be obtained by rotating the insert.

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First Claim