Posted by WellWorn on November 11, 2013 at 11:57:55 from (184.108.40.206):
In Reply to: 65 lift cover posted by Brendon Warren on November 10, 2013 at 16:07:22:
Brendon, sorry about mispelling your name - I'm usually more observant than that...
Another FYI, slide fit is only slightly worse than snug fit. Snug is where you have to tap it with a persuader to get in in (or out). "Press fit" means you use an arbor press (a few tons of pressure) to push the part into (or out of) place. Any slop in a bushing under potentially several thousand pounds of load, especially a place that can collect dirt, is asking to wear even faster. If you rarely use the 3pt, new bushings may take up most of the slop and you'll be good for years. If you don't have bore gages, make sure you test fit the bushings on the shaft and in the cover bores before you attempt assembly. My replacement bushings came about .020 undersized (inside bore) probably to allow for them to be cut to fit an undersized (turned) shaft. Bushings pressed into the bores will lose a very slight amount of inside diameter, so you may still need to have the bushings installed, line bored to shaft size + clearance, then removed, shaft installed, and bushings reinstalled. Depending on how worn and/or out of round your rockshaft is, boring may not be necessary, but I doubt it.
I had a special tool made to get the inside bushings put into place (a shouldered sleeve that bottomed on the cover when the inner bushing was at correct dimension with room for the O ring in the middle). I also had the outer bushings drilled and grease fittings added to the cover to provide some way of lubrication to the outer bushings and to push dirt and moisture out, rather than running the shaft 'dry' on the outside. The inside bushings are splash lubricated from the PTO ground drive gear on the pinion shaft.
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