Bent Ramrod
06-19-2020, 01:55 PM
Finally got my Grinder running after a few weeks of Lockdown devoted to cleaning and parts replacement. Only got a few grind sessions out of it before the motor started smoking. Tried to keep the run times down, but apparently it fried anyway; it just hums now when I throw the switch.
I have another motor to replace it, but the pulley hub is very odd. Never seen one like this before; it generally has a key or set screw to hold it on the shaft. This has a split hub with a hex nut threaded on the periphery. I oiled the threads up good, but there's no purchase on the pulley, and when I apply a wrench to the flat on the shaft and turn the nut, the whole pulley turns and nothing loosens. I have to get the pulley off to get the motor detached from the pulley guard.
263823
I tried to wedge the hub from turning by jamming a screwdriver in, but can't get the nut to turn. Does it even loosen, turned counterclockwise? Am I turning it in the right direction? Do I need another tool? Anybody have any advice? Anybody even know what this fastening is called? (Can't find anything like it in the Pulley sections of machine catalogs.) Thanks in advance.
I have another motor to replace it, but the pulley hub is very odd. Never seen one like this before; it generally has a key or set screw to hold it on the shaft. This has a split hub with a hex nut threaded on the periphery. I oiled the threads up good, but there's no purchase on the pulley, and when I apply a wrench to the flat on the shaft and turn the nut, the whole pulley turns and nothing loosens. I have to get the pulley off to get the motor detached from the pulley guard.
263823
I tried to wedge the hub from turning by jamming a screwdriver in, but can't get the nut to turn. Does it even loosen, turned counterclockwise? Am I turning it in the right direction? Do I need another tool? Anybody have any advice? Anybody even know what this fastening is called? (Can't find anything like it in the Pulley sections of machine catalogs.) Thanks in advance.