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Jet 1336 spindle removal help needed

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yooper

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#1
My dad called me to look at his jet lathe because it was making a noise. I tracked it down to what I think is in the spindle bearings. The noise is a steady clunking sound, that goes away when I push on the spindle with a block of wood. I need to find out how the piece that the chuck screws on to can be removed. Also any advise on how to remove the spindle.

Thanks Rick
 

tertiaryjim

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#2
A sound like that could be the pin that locks it in high gear.
Make certain the pin is released and is firmly seated in the mating hole unless your running in back gear.
If your running in back gear then make certain the pin is raised and captured so it can't ride on the spindle and bounce over the mating hole.
I'm assuming your lathe isn't a gear head machine.

Jim
 

yooper

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#3
A sound like that could be the pin that locks it in high gear.
Make certain the pin is released and is firmly seated in the mating hole unless your running in back gear.
If your running in back gear then make certain the pin is raised and captured so it can't ride on the spindle and bounce over the mating hole.
I'm assuming your lathe isn't a gear head machine.

Jim
I already checked the pin and that isn't the problem. When I push up on the spindle with a block of wood the noise goes away. We have the left side loose but need to get the right side loose so we can get the spindle out.

Thanks for the advice.

Rick
 

Ulma Doctor

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#4
my first thought was the bearing preload seems to have been lost.
were any locking collars or locknuts loose on the spindle?
does the sound get worse as he operates?
i'm assuming he's kept oil in the bearing reservoirs and the clunking is not caused by a lack of lubrication.

from what i have seen and read,you remove, spindle locknut and retainer, the chuck, and bearing retainer & set screws and spindle set screws the spindle comes out towards the bed.
i have read that a man made a custom puller that went through the spindle kinda like a reverse collet closer, that draws the spindle out from the headstock using allthread and some nuts and a couple fabricated collars.

i imagine you could be a little more cro-magnon and use soft materials (lead,brass,wood,aluminum, etc) to use as a drift to drive the spindle out (being careful not to damage spindle or threads of course).

i hope the information helps out!
 
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kd4gij

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#5
A picture would be a big help.
 

yooper

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#7
Ulma Doctor. It is possible that he lost the preload, however he tried to take it apart before he called me for help. I have the lock nuts and the pulleys loose except for the one closest to the bed. I can see that one has a key slot in it and it slides with the shaft up to the casting and I don't want to break the casting. I will check to see if I can make a puller of some sort the next time I head down there. Its a 25 or 30 year old machine and I am not sure if he kept an eye on the lubrication level. I do know that we need a new o-ring for the spindle - oops on my part. I will keep you posted and maybe try to learn how to post pics.
 

Shadowdog500

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#8
Ulma Doctor. It is possible that he lost the preload, however he tried to take it apart before he called me for help. I have the lock nuts and the pulleys loose except for the one closest to the bed. I can see that one has a key slot in it and it slides with the shaft up to the casting and I don't want to break the casting. I will check to see if I can make a puller of some sort the next time I head down there. Its a 25 or 30 year old machine and I am not sure if he kept an eye on the lubrication level. I do know that we need a new o-ring for the spindle - oops on my part. I will keep you posted and maybe try to learn how to post pics.
Is it a belt drive that looks like this one?

jet-002.jpg

jet-001-e1380048676625.jpg

jet-002.jpg jet-001-e1380048676625.jpg
 

yooper

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#9
Yes it looks very similar, his is a BD-1336 , Stock number 321345, Probably the same machine.
 

Steve Shannon

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#10
Yooper,
Did you succeed in removing your spindle? I'm working on removing mine (Jet 1336 PBD) right now and if you have any suggestions, I would appreciate them. Did you tap it out or pull it with a piece of all-thread? Did you happen to take any pictures?
 

yooper

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#11
Yooper,
Did you succeed in removing your spindle? I'm working on removing mine (Jet 1336 PBD) right now and if you have any suggestions, I would appreciate them. Did you tap it out or pull it with a piece of all-thread? Did you happen to take any pictures?
I took the head completely off the lathe and brought it to my shop and used my press to get it out. A little pressure on it and it popped right out. It was easier for me as my dads shop was 50 miles away, and it made it easier to get it out and get parts. I would try the the all thread first, make sure to keep track of how it all comes apart, my dad started taking his apart and then called me for help:frown 2:. The bearings and seals were obtained locally, Applied Technologies. HTH
Rick
 

Steve Shannon

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#12
Thank you for that. After seeing Timken produced videos where they tapped bearings out I figured I would try a little harder. The spindle came right out. Now I have to remove the bearing cups from the headstock and large cone from the spindle. First I'm going to work on my shop.


Sent from my iPhone using Tapatalk
 
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