I have a belt driven pump on a sprayer that is powered by a small engine. The keyway on the shaft of the pump is a little worn and at some point the key worked itself out. Unfortunately I did not catch it before the pulley started to wear down the shaft. I replaced the key with a new one that appears to be snug and tightened down the screw, but the pulley keeps wanting to ride off.
The sprayer is used for fruit trees and I am in the middle of the season, so rebuilding the pump is going to take up precious time.
Is there a way to keep this pulley on the shaft or am I simply out of luck and replacing the shaft is the only route to go? Would a product like Loctite work (temporarily or otherwise)?