Decided to do maintenance, had small issues and at 225 hours. Cleaned and replaced/rebuilt brushes Y/Z bearings. Put all back together, thought I would try a small carve to test my work. Never got there as I found I could not insert a bit into the chuck. I did replace the bearings on the Y truck as one was tight. Did nothing to the chuck except remove the bit. Machine was running OK when I started. Bit came out OK.
I've tried different bits, have tried easing a tapered awl into the chuck, used a mirror to look up into it for something in the way, removed the allen screw and looked into that channel and even tried to insert a 1/4 drill bit (failed). Bit came out why won't one go back? Pulled out flex shaft and can see through.
Haven't sprayed any type of lube/cleaner because I was afraid it might create a problem with grip while running.
Appreciate feedback from anyone with a Rock who might have experienced a similar problem on getting a bit back in the chuck.
Thx
Rick H