Jacobs Chuck Restore

[OldeTimeEtc]

Starting assembly - before any grease is applied I recommend a dry run assembly of the jaws and nut unit. So first order of business is to note what hole position each jaw sits in. First check out the illustration I DLed from Jacobs website. You will notice that although each jaw looks the same there is a small difference at the end of the threads on the business side of the jaws. If you look at the jaws from their side you will see what the illustration is showing..somewhat. I found it doesn't look quite exactly like the drawing BUT...if you will not the spaces are get wider on each jaw.....starting from 1 which is the narrowest to 3 which is the widest. Take a piece of paper and number it like I did.......makes it easier to remember which is which once you identify each one....or simply number them with a sharpie.

 

[OldeTimeEtc]

Now that you have the jaws identified, take a good look on the main chuck body in front of each jaw's position hole and you'll see a number.....each hole should be numbered for each jaw so you know where they go back but just in case the numbers are worn away or unreadable you can fall back on having marked their positions earlier that I mentioned.
In fact on my chuck the number 1 is completely worn away but since 2 and 3 are still readable there's no doubt where #1 goes. If only one number is visible note that the numbers travel around the body clockwise if you're looking at the body from the top....least this is what I've found on several chucks I have already restored...best to not assume and mark them to be sure.

 

[nine4gmc]

Good info, thanks for posting!!!

 

[Ryan]

Someone jumped the gun about something I'm already aware of but hadn't had the chance to address yet. So I guess I'll have to pretend its not there or just toss over 2 hours of my work away......so I guess I'll try to continue...

Hey man, this is a great tutorial... However, I think maybe you are misconstruing "lametec's" post. I don't believe he is trying to hijack your thread at all. He is simply trying to add to it and be helpful.

This is a community... and we try to help each other out here.

 

[OldeTimeEtc]

SORRY FOLKS.......DUE TO DIFFERENCES OF OPINIONS WITH THE ADMINISTRATOR HERE I WILL NO LONGER BE DOING ANY MORE TUTORIALS or even finish this one although I was going to continue on restoring a ball bearing super chuck. . MY APOLOGY TO EVERYONE ELSE HERE....if you have any questions about the restorations feel free to PM me. Here is a pic of the finished chuck.

 

[Ryan]

SORRY FOLKS.......DUE TO DIFFERENCES OF OPINIONS WITH THE ADMINISTRATOR HERE I WILL NO LONGER BE DOING ANY MORE TUTORIALS or even finish this one although I was going to continue on restoring a ball bearing super chuck. . MY APOLOGY TO EVERYONE ELSE HERE....if you have any questions about the restorations feel free to PM me. Here is a pic of the finished chuck.

Well, that escalated quickly... Wow. Good luck to you and sorry to disappoint.