Re: Disc Brakes

Posted by Janicholson on October 28, 2012 at 11:34:22 from (96.24.99.126):

In Reply to: Re: Disc Brakes posted by The tractor vet on October 28, 2012 at 07:58:02:

I imagine the cupped washers were put in place to increase the thickness of the expander by a previous owner with no understanding of how the device works. The idea of making the expander thicker is reasonable, but not easily accomplished. The balls and tracks are not shimable. The common method of making the brakes work well is to assure that the total stacked thickness of the disks and expander (when collapsed flat) are .040 to .060" less than the space they are located in. This is made smaller by machining the cover where it touches the trans case/pinion carrier. The geometry of the diagonal lever/links that pull the expander open gets progressively less effective as the disks and cover,and carrier wear. Jim

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