Hello Shopbot friends,,,, I have installed 3 of my 4 new pinions, even though only one, on the Z car assembly was fairly worn. In cleaning out all the gunk inside the Z housing, the rack looked good. But on both sides of the Z rail, where it engages the V-rollers, there was significant "mushrooming". This was worse than any other mushrooming than I have had on the rest of my machine. The mushrooming is on all 4 areas where the V-rollers engage the Z rail, but it is worst on the lower end (near the collet) of the Z mounting plate. The worn areas are all 5" long.
I'll of course carefully dress the mushroomed areas with a file, and make those areas match the undamaged/worn parts of the z-rails. But my question is, is this suggestive of anything being mis-adjusted that I should watch for upon reassembling? Does it suggest anything else? (Sorry, the macro function on my camera is pretty bad....)
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