Richard Line
09-22-2018, 4:44 PM
I recently picked up a dirty MF 77 drill at a garage sale for $3. Seemed to work well, but really needed cleaning of all the moving parts and a replacement side handle. After some soaking and then oiling it is working well. That is except for the chuck. The chuck wants to stick when it has been tightened against a bit or itself. I've oiled it several times, but it still often sticks. From what I can see looking into it, the outsides of the chucks teeth(?) maybe scratched and causing the sticking.
My question is how does the chuck come apart. I thing there is a threaded disk on the back end of the chuck that gives access, but I'm not sure and don't want to attack it without better knowledge. I've got a Goodell-Pratt egg beater whose chuck opens that way. I've tried lightly to open it, but its tighter than I want to force unless I get or make a better fitting screw driver blade.
Thanks for the help. Oh, I did make a new, but very simple, side handle to replace the missing one.
My question is how does the chuck come apart. I thing there is a threaded disk on the back end of the chuck that gives access, but I'm not sure and don't want to attack it without better knowledge. I've got a Goodell-Pratt egg beater whose chuck opens that way. I've tried lightly to open it, but its tighter than I want to force unless I get or make a better fitting screw driver blade.
Thanks for the help. Oh, I did make a new, but very simple, side handle to replace the missing one.