Re: Wingshaft clearances

Posted by Marco Tahtaras on November 24, 1997 at 18:49:56

In Reply to: Wingshaft clearances
posted by Bob Carabbio on November 22, 1997 at 18:48:23

: What I've never seen in shock absorber writings is a statement of the necessary diametric clearance between the wingshaft ends, and the housing bore, and the wing dams and the center diameter of the wingshaft hub.
: also the clearance between the top/bottom surfaces, and the wings with the inner cap screwed down.It appears that these would have to be quite small to meet the leakage specs in the service bulletins.
: The truth is out there somewhere -
: Bob Carabbio

I haven't any factory specs or blueprints on the shocks, however I measured one from my 25,000 mile Fordor. These are not the best I have worked with but are far better than most. The difference between the hub of the wingshaft and the dams is between .0025 - .003". I don't have proper micrometers for the other measurements but appears to be .004 - .005 difference between the outer bore and total width of wings. The shaft has about .005" slop in the bushing. I believe the later measurement should be around .002 - .0025"
I've used shocks that were nearly impossible to wobble the wingshaft WITHOUT the bushing in place indicating how closely fitted they were originally. Ford did specify that parts were not interchangeble as each shock was individually fitted.
Although I've never tried, I do believe shocks would still be usefull with up to .010" total space at the ends of the wingshaft as long as there is no rust and the bushing is sleeved and refitted to the shaft.

E-Mail Comment to Webmaster