Hello Forum
Acquired a used Series 3 that needs a tune-up.
I placed a mag dial indicator on the mill bed with a zero'd dial indicator touching the Y axis. Looking down from the top (Z axis perspective), I torqued the table in both a clockwise and counterclockwise direction to observe +/- .005" deflection on the needle.
My studies from watching various videos and readings lead me to understand that tapered gibs;
they are one piece with one adjustment screw that functions to tighten the gib, the other is to "set" the gib. The adjustment screws push the gibs in one direction or another. Making an adjustment on one screw requires that the opposite screw be backed off a similar amount so that the gib does not "bow". That over tightening the screws can "bow" the gib and accelerate wear, that when making an adjustment on the y axis influences the x axis adjustments as well. Finally, indications of a over tightened gib can present itself as lost motion when reversing table direction.
Yes, it's f'n with me. Any suggestions, advice or realigning my reasoning would be appreciated
Thank you again