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Old 08-26-2022, 10:06 PM
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Ironman Ironman is offline
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Talking Oh, God no! I broke it

Today I had to make a couple of master link bushings for an excavator, and I stared taking down a 83 mm pin to make this 1-7/16 x 5" bore on it.
All power feed work, and after I had made a cut the carriage sputtered to a stop after 2.5 inches. So after thinking a bit I figured the apron had to come off.

It was a straight forward knock out the taper pin driving the feed screw and pull out the feedscrew from the tail of the lathe. Then I unbolted the apron and dropped it onto wood blocks I had piled in the chip pan.
For a shielded unit and hidden from the flying chips, it sure was a mess. I got it into the parts washer and cleaned it up and blew it clear of chips. By locking the pinion with a set of vise grips, I was able to see that one of the pins driving the intermediate gear that then turns the carriage pinion was broken in three places. Just had to figure which was the small end and punch out the remaining pin pieces.

As I have a taper pin assortment, it was an easy fix once I had the shaft and gear holes lined up.
By then it was too hot and I decided to get Margot to help tomorrow morning and we will get it into place and bolted back on.
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Gerry
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Last edited by Ironman; 08-26-2022 at 10:27 PM.
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Old 08-27-2022, 01:54 AM
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greywynd greywynd is offline
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Makes for a rough, and long day. At least it was readily found and fixed.


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Old 08-27-2022, 07:38 AM
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toprecycler toprecycler is offline
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Glad it wasn’t a gear!


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Old 08-27-2022, 07:58 AM
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Ironman Ironman is offline
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The gears in the apron are mild steel. I noted that there is no brass to be found. The half nuts slide up and down in a dovetail with adjustable ways. They are cast iron half nuts and have no wear and the lead screw is fresh looking.
I was expecting brass or cast aluminum like other lathes I've owned.

Still not sure how a pile of swarf got into the box.
It has a oil reservoir with 4 cotton wicks in copper tubes that guide the wicks to different bearing points, and of course I lost one. We spent a 1/2 hour hunting for it, and then made a wick from some cotton cord. I hope it works ok, time will tell. The oil reservoir in the bottom of the apron was way below the level of the gears to be able to pick up oil as well, but all looks good. Low mileage?.
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Gerry
You got freedom of speech, if you don't say too much.
Aaron Neville.

When a liberal screams racism, you can bet they were also born with white skin.

The countries whom the gods would destroy they first make green. Rex Murphy

Last edited by Ironman; 08-27-2022 at 08:03 AM.
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