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View Full Version : Anyone ever work on a Pacemaker head stock?



jkilroy
08-27-2014, 11:13 PM
So my Pacemaker, a 16x54, late 40's, 27 speed model, has developed a knock in the head stock. The good news is the spindle doesn't seem to be involved in generating the noise, if I put the machine in neutral and run it the noise is still there, doesn't change, with the spindle still. So it appears that I don't have to look around for bearings that would certainly cost more than I paid for the whole machine. Take a look at these pics and then check the question.

https://www.dropbox.com/s/zdi918h7hrfpscg/IMG_0233.JPG?dl=0
https://www.dropbox.com/s/kxkjkjc4e49kyr6/IMG_0234.JPG?dl=0
https://www.dropbox.com/s/lxdcxebkk5thl91/IMG_0235.JPG?dl=0
https://www.dropbox.com/s/qltdgyyy7jzppo3/IMG_0236.JPG?dl=0
https://www.dropbox.com/s/e2qyvjjs6emwt67/IMG_0237.JPG?dl=0

Ok, first off, has anyone got any experience in digging into one of these?

Is that girdle, for want of a better word, with all of this shifting gear attached, removable in one piece?

Is the counter shaft removable without taking off the head stock?

Has anyone every seen, or just heard of, a service manual for these things?

Also, the oil pump is pumping but there is a lot of air coming out in cycles. There is one good push of oil, then a big bubbly mess, then a good push of oil, etc. I guess the oil pump is way down in the bottom of the head stock no doubt?

mattthemuppet
08-28-2014, 02:09 AM
Not the exact same machine, but this might help http://www.hobby-machinist.com/showthread.php?t=21250

Good luck!

Fasttrack
08-28-2014, 09:36 AM
Ok, first off, has anyone got any experience in digging into one of these?

Is that girdle, for want of a better word, with all of this shifting gear attached, removable in one piece?

Is the counter shaft removable without taking off the head stock?

Has anyone every seen, or just heard of, a service manual for these things?

Also, the oil pump is pumping but there is a lot of air coming out in cycles. There is one good push of oil, then a big bubbly mess, then a good push of oil, etc. I guess the oil pump is way down in the bottom of the head stock no doubt?

I will look when I get home tonight and see if I have any files on my other computer. I have a hard copy of a parts breakdown for the whole lathe but it is about about 800 miles away at the moment! I did tear into the headstock of one of my Pacemakers. That "girdle" is removable in more-or-less one piece. Some shifting components will slide out as you remove it so proceed with caution. The actual "girdle" is located with blind taper pins, IIRC and removing it was somewhat challenging. I seem to recall using some 5/16" bolt and nuts as "jacks" to pull it evenly and smoothly off.

I also think the counter shaft comes out without removing the headstock. In fact, the bearing covers for the counter shaft should be visible and easily removable.

I own a service manual for these! But it's a hard copy and it's 800 miles away :(

Oil pump: at risk of asking a dumb question, have you tried turning the filter and scraping off the gunk?

Can you turn it on in neutral but with the clutch engaged and then in gear with the clutch out and one in neutral AND clutch out? Post the results here!

Good luck and keep us posted!

Edit: Also, you might try MikeC on practical machinist. I think he pointed me towards some of the manuals for mine and he has a history with ATW.

2nd Edit: Here is an operating manual with some sketches that might help...
http://vintagemachinery.org/pubs/1004/3613.pdf

loose nut
08-28-2014, 02:47 PM
Sell it and buy a nice new Chinese machine.

Incoming!!!!!

Glug
08-28-2014, 03:02 PM
Sell it and buy a nice new Chinese machine.

My use of just such a Jet lathe makes it seem like headstocks are supposed to make knocking noises. Maybe it is a feature to count the rpm?

jkilroy
08-31-2014, 01:14 AM
I got a video recorded today, I'll get it up online tomorrow and post a link, thanks for the assistance. There is a plate on the front of the lathe, next to the spindle, looks to be held in by a few bolts, I assume that will give me access to that end of the counter shaft. And I am guessing I have to remove the rear cover and the clutch housing to get at the other end? This is going to get messy, better get out the go-jo!

Old Hat
08-31-2014, 01:25 AM
I'd give it a few second guesses before unbolting things you arn't sure of.
have dinner, watch a movie, take another looksee.

I've blocked out a memory of taking out some bolts and hearing a heavy fall inside.
I can't recall anything after that but a white light and organ music.