Posts: 29,152
Threads: 1
Joined: Aug 2002
remove the assembly, take it all apart, clean it up ( most important step) and put it back together and install.
A little dry lube on threads and moving parts will keep it functioning
Let us not seek the Republican Answer , or the Democratic answer. Let us not seek to fix the blame for the past. Let us accept our own responsibility for the future John F. Kennedy
Posts: 4,439
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Joined: Jan 2005
The knurl that is missing is what advances the bearing.Look at your top guide and you will see the knurl has a groove.This part looks like a tiny pulley . The groove engages a lip on the bearing support arm.
When you adjust the knurl which is internally threaded the bearing moves in or out.Then their will be a locking screw to keep the knurl where you set it.
Delta should have a million of these parts as they are standard for many machines.Worse comes to worse I'll make you the part.
I would need the OD ,the width of the part and the groove dimensions,width and depth.Lastly I would need to know the threads,probably metric.Often another machine vendor will use the same type of knurl.You could call Grizzly tech after trying to get a Delta tech,good luck with that.
One other possible solution.Get one nut that fits the threads. File a groove on each side.Easy with a metal lathe,laborious for any body else.
mike