Tom Gardner wrote:
The 3-jaw chuck has been on for at least a year. I need to change chucks.
It mounts on a taper and is drawn in and pushed off with a threaded collar.
The taper is holding tight after beating the spanner wrench for an hour with
a BFH. I even heated the collar. I'll try to get some Kroil in there but
it looks like a tough road. Any ideas from someone familiar with a RP?

Here's a pix of one like mine.
http://www.purplewave.com/cgi-bin/mn...?091006/8905/2



Sounds like an L fitting as I have a lathe with a L00 but have never had
a problem with it sticking. I think in the circumstance I would tighten
the collar to try and remove it, maybe even pound on the C spanner a bit
to make sure it's tensioned, then warm the chuck to try and break the
grip and hopefully it'll pop free. I've suggested this to my neighbour
to free the rear axle hubs on his Morgan, IIRC a 5 degree included angle
taper on the end off the half shaft, and once the puller was done up
tight and the hub warmed they just popped off.