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KWM Machine Maintenance

John Rausch

NAWCC Member
Mar 16, 2015
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Bradenton, FL
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I have a KWM Bushing Machine that I inherited from my Dad, so it's easily 40+ years old. The Pressure Shaft (that slides down & up and takes the reamer) has at times not slid smoothly. I've tried cleaning the shaft off with alcohol and that seems to work for a short time and then it starts binding again. I have no manual for this so I don't know the proper care for the shaft.... heck, I'm not even sure how to take it apart. I usually ask for the proper method before I forge ahead and do what I THINK is the right thing... so here I am asking.

1) What is the right way to "care" for the shaft?
2) How do I take it apart?
 

wow

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Jun 24, 2008
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Mine just pulls out from the top. I occasionally clean it with naptha and oil it with a light synthetic oil. I use Slick 50 ONE oil. It should slide up and down easily.
 

John Rausch

NAWCC Member
Mar 16, 2015
86
12
8
Bradenton, FL
Country
Mine just pulls out from the top. I occasionally clean it with naptha and oil it with a light synthetic oil. I use Slick 50 ONE oil. It should slide up and down easily.
Mine looks like this one. There is a keyway that runs down the shaft so there is a key or setscrew somewhere in the mechanics making so I can't just pull it out like on my Bergeons.

KWM.jpg
 

Willie X

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Feb 9, 2008
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Looks like a collar with two setscrew holes just above the chuck?

You shouldn't need to take it apart unless it's rusty, or gauled out. Just add a few drops of 10W spindle oil, or machine oil, or clipper oil, to the quill and crank bearing every time you use it. Wipe off the old oil each time before you oil.

The new oil flushes away the old and the machine will keep itself clean as long as it's being used regularly. I would lightly coat the bevel gears and the leaver cam at the top with lithium grease.

My 2, Willie X
 
Last edited:

shutterbug

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Oct 19, 2005
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If you do want to take it apart, it looks like the upper plunger arm could be unpinned and removed. That would allow the spindle to slide out the top. Maybe. :)
 

John Rausch

NAWCC Member
Mar 16, 2015
86
12
8
Bradenton, FL
Country
If you do want to take it apart, it looks like the upper plunger arm could be unpinned and removed. That would allow the spindle to slide out the top. Maybe. :)
I can pivot the arm out of the way, but the shaft is captured somewhere by a key or setscrew, and will not slide out the top.
 

John Rausch

NAWCC Member
Mar 16, 2015
86
12
8
Bradenton, FL
Country
Looks like a collar with two setscrew holes just above the chuck?

You shouldn't need to take it apart unless it's rusty, or gauled out. Just add a few drops of 10W spindle oil, or machine oil, or clipper oil, to the quill and crank bearing every time you use it. Wipe off the old oil each time before you oil.

The new oil flushes away the old and the machine will keep itself clean as long as it's being used regularly. I would lightly coat the bevel gears and the leaver cam at the top with lithium grease.

My 2, Willie X
Thank you Willie.

Oiling it is what I am tempted to do, but was waiting in hopes someone has a manual for the little beastie. When I worked on some punch-card machines many years ago, I was told by a senior-tech that certain bearings were oil-impregnated bronze bushings, and that oiling them would attract dust and ultimately lead to early failure. With that in mind, and not knowing what's inside or exactly how to get it apart, I ask first, then proceed. Just hoping someone else has first-hand knowledge of it.

The collar looks as though it should have setscrews or a pin in it, but the holes just look like they were blind-drilled into the collar. No setscrew appears to be in them. And the collar does not rotate with the shaft.
 

shutterbug

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It looks like that collar on the bottom side has set screws and might come off to allow the shaft to be removed from the top.
 

daveR

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Sep 10, 2008
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melbourne, Australia
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HI John, with this model, if I remember correctly, the keywaystops the tube going out the top. You need to remove the the circlip holding the spring down and the tube up. The tube should then drop out through the base of the device. If that is correct remember to hold the tube when you release the spring as other wise it may suddenly drop and bend or break the clawsthat hold the cutting tool.
David
 

Willie X

Registered User
Feb 9, 2008
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I think you will find that the collar, mentioned in post #4, is threaded and will scew right out using a hook type spanner wrench. Said wrench probably came with the machine and is setting in a drawer somewhere along with the instructions.

I would expect it to have a left-hand thread.

Willie X
 
Last edited:
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