- Joined
- Aug 29, 2017
- Messages
- 30
I have a 5" three-jaw South Bend scroll chuck I am trying to dismantle for cleaning The chuck is very dirty, but has some external but no internal rust.
I got the back off the chuck, which uncovered the three screws which I removed.
Here is my problem: I need to remove the scroll pinion next, and there is a very small slotted setscrew located near the chuck body OD (see photos). I can only turn this screw a few degrees before it becomes impossible to turn.
I rotated the pinion as I attempted to remove this screw, and discovered that when I apply CCW torque to the tiny screw the pinion rotation becomes more difficult. The pinion will move very slightly when I try to loosen the tiny screw. When I turn the little screw CW, the pinion will turn freely as the interference disappears.
Does anyone have an exploded view of this chuck, or any suggestions? How do I remove this tiny screw?
Thanks for any suggestions.
Bill
I got the back off the chuck, which uncovered the three screws which I removed.
Here is my problem: I need to remove the scroll pinion next, and there is a very small slotted setscrew located near the chuck body OD (see photos). I can only turn this screw a few degrees before it becomes impossible to turn.
I rotated the pinion as I attempted to remove this screw, and discovered that when I apply CCW torque to the tiny screw the pinion rotation becomes more difficult. The pinion will move very slightly when I try to loosen the tiny screw. When I turn the little screw CW, the pinion will turn freely as the interference disappears.
Does anyone have an exploded view of this chuck, or any suggestions? How do I remove this tiny screw?
Thanks for any suggestions.
Bill