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steering box reinforcements at frame


DonaldSmith

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As part of the power steering modifications to my 1047 DeSoto, I installed a Saginaw power steering gearbox in place of the manual box.  The new box exerts considerably more force to the frame than the manual box. 

 

2015:  At the suggestion of James Douglas, who had witnessed frame cracking in similar applications:  

Added tubular reinforcements to prevent the bolts collapsing the sides of the box frame.  Enlarged the openings in the outboard gusset, and added steel pipe sections. 

 

2019:  Experienced slop in the steering.  Observed the steering box moving when the wheel was turned, deflecting the sides of the frame (both sides moving in unison).  The tee-shaped gussets had not spread the forces to the edges of the box frame.

Added quarter-inch steel gusset plates, inboard and outboard, to prevent deflection of the sides of the box frame.  Deleted the inboard tee gusset.  Retained the sleeve spacers and the outboard tee gussets, and added shims to fill in the surface reinforced by the new gusset plates.  (Shims shown on the plates; installed behind the plates.)  (The front plates could have been trimmed more closely; the rear plates did not need so much curvature.)

 

 

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