Hi all, this will be my first post since I joined, though I’ve frequented the site over the past few years. I could always find the info I needed, but not this time, so maybe you folks can help…
I have a G0752Z lathe, and it came from the factory with the 3-jaw chuck installed. I’ve been using this chuck from the beginning, and it’s now about two years later that I decided to try the 4-jaw chuck. This is where I ran into a major problem.
Simply put, the 3-jaw chuck is stuck. As in, will not budge an iota. I removed the safety collars per the instructions, and inserted the two chuck keys, and tried to spin the chuck off in a counter-clockwise direction. Nothing. Nada. So I sprayed some penetrating oil in the seam between the chuck and the spindle collar, and let it sit overnight. No luck. I found a length of drill rod blank that just fit into the hole on the spindle collar (where the small chuck key would go) and I put a thick layer of leather on the ways, then braced the drill rod blank against it so I could try again with more leverage. Nothing. I even tapped the large chuck key with a soft-headed mallet, with no success.
Before screwing up anything, I contacted Grizzly tech support. Their answer was basically what’s been posted on YouTube - use a strap wrench on the pulley on the left while using a large adjustable wrench on one of the jaws in the chuck. That didn’t work since the strap on the wrench kept slipping under force, so I put a layer of sandpaper underneath for added traction. That still didn’t work.
What I think I’ll need to do is immobilize the spindle completely so I can really wrench down on the chuck with both hands. Aside of taking all the pulleys, gears, spacers, keys, etc. off the spindle so I can remove the spindle with the chuck still attached, and put the spindle in a padded vise - is there anything else I can try to get the chuck off the spindle??
Thanks in advance!
I have a G0752Z lathe, and it came from the factory with the 3-jaw chuck installed. I’ve been using this chuck from the beginning, and it’s now about two years later that I decided to try the 4-jaw chuck. This is where I ran into a major problem.
Simply put, the 3-jaw chuck is stuck. As in, will not budge an iota. I removed the safety collars per the instructions, and inserted the two chuck keys, and tried to spin the chuck off in a counter-clockwise direction. Nothing. Nada. So I sprayed some penetrating oil in the seam between the chuck and the spindle collar, and let it sit overnight. No luck. I found a length of drill rod blank that just fit into the hole on the spindle collar (where the small chuck key would go) and I put a thick layer of leather on the ways, then braced the drill rod blank against it so I could try again with more leverage. Nothing. I even tapped the large chuck key with a soft-headed mallet, with no success.
Before screwing up anything, I contacted Grizzly tech support. Their answer was basically what’s been posted on YouTube - use a strap wrench on the pulley on the left while using a large adjustable wrench on one of the jaws in the chuck. That didn’t work since the strap on the wrench kept slipping under force, so I put a layer of sandpaper underneath for added traction. That still didn’t work.
What I think I’ll need to do is immobilize the spindle completely so I can really wrench down on the chuck with both hands. Aside of taking all the pulleys, gears, spacers, keys, etc. off the spindle so I can remove the spindle with the chuck still attached, and put the spindle in a padded vise - is there anything else I can try to get the chuck off the spindle??
Thanks in advance!