Thanks for the quick replies, yes there is a key way setup,on the drive end and I have loosened the two Allen screws on the sleeve/coupler but is does not move freely and I did not want to start pulling or prying until I heard from the experts! The correct model number on the pump is U40 and not UA40 as posted earlier. I am also in search of a operations and maintenance Manual if one is available.
Thanks,
Wayne Bryant
