Method for manufacturing a vehicle cross-beam rear axle

摘要

A method of manufacturing is disclosed for the installation of a one piece damper member for retaining the midpoint of a torsion tube on the torsional axis of a channel-shaped cross beam vehicle rear axle. The damper member is formed during the axle assembly line advancement by injecting a first mass of hardenable urethane paste material into a side gap portion and arcuate shaped central gap portion of a D-shaped recess defined intermediate the channel interior and the tube. A second mass of the urethane paste material is injected into the remaining side gap portion and channel upper open end space. As an adjunct to the axle being advanced through assembly line washing, wax coating and heat treating operations the first and second masses coalesce and attain an accelerated final curing of the tube retaining damper member.