I started cleaning up the pork chop last night. I initially thought it was in good shape but once I got all the sawdust cleaned off and began putting the screw through its paces, I am a little concerned. The Quadrant Assembly rack teeth are pretty worn, and on one side at that. The drive screw (worm control shaft) is much harder than the cast aluminum so it dug in.
This shot illustrates what I'm trying to describe.
The screw turns freely though about 2/3 of the range but it begins to bind about the position shown in the picture below. It takes some wiggling to get any more movement out of it but once it passes that first bind it does OK until it reaches the about the same point in next revolution.
Looking back through my photos, I believe this position corresponds with the slow end of the speed range. I cleaned up the "squeeze out" edges in the aluminum with a micro file but it doesn't move any better.
1. Is this the normal position the worm screw would stop at the low end of the range?
- My gut tells me I should go ahead and replace the quadrant assembly but do I need to?
I'm also wondering if this condition might have something to do with the problem tsaguy was having.
