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1950's DeWalt MMB 23 RAS #2: Took it apart for cleaning and painting

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Blog entry by Beginningwoodworker posted 02-16-2011 01:27 AM 1581 reads 0 times favorited 14 comments Add to Favorites Watch
« Part 1: Its here! Part 2 of 1950's DeWalt MMB 23 RAS series Part 3: Repainting the RAS »

I took the motor off today, the roller bearings looks nasty but the spends freely so need to change them, I will try to clean them with WD 40. I Ran the motor today it sounds good but it took a few seconds for the blade to stop. I am going to repaint everything with Rustoleum hammed paint in a copper finish. You can use that paint over scratched, rusted or pitted metals.



14 comments so far

View NBeener's profile

NBeener

4808 posts in 2638 days


#1 posted 02-16-2011 02:56 AM

Hey. You got an instruction manual !!

Charles: if you’re going to clean those roller bearings, be VERY careful with WD-40.

WD-40 is an excellent degreaser. Those bearings contain (or SHOULD contain) ball bearings, and … GREASE.

If the bearings are not well sealed, you’ll strip the grease out of them.

I’d just spray a rag, lightly with the WD, and use the rag to wipe the bearings, but don’t spray the bearings directly.

Looking good !!

-- -- Neil

View Beginningwoodworker's profile

Beginningwoodworker

13347 posts in 3137 days


#2 posted 02-16-2011 02:59 AM

Yes I got it Neil!

View Beginningwoodworker's profile

Beginningwoodworker

13347 posts in 3137 days


#3 posted 02-16-2011 03:00 AM

I think I wipe to much of the grease off.

View NBeener's profile

NBeener

4808 posts in 2638 days


#4 posted 02-16-2011 03:02 AM

The grease on the outside SHOULD come off.

Don’t worry about that.

-- -- Neil

View Beginningwoodworker's profile

Beginningwoodworker

13347 posts in 3137 days


#5 posted 02-16-2011 03:02 AM

Ok Neil.

View Beginningwoodworker's profile

Beginningwoodworker

13347 posts in 3137 days


#6 posted 02-16-2011 03:09 AM

Could I put some machine oil on the bearings?

View NBeener's profile

NBeener

4808 posts in 2638 days


#7 posted 02-16-2011 03:25 AM

If you can, try to see if the bearings are sealed. If they’re obviously sealed, then the machine oil won’t get in there, and won’t help.

If you can’t tell, then you can put a drop on each one. It’ll either seep in, and do some good, or … tomorrow … you’ll just have to wipe it off ;-)

-- -- Neil

View Beginningwoodworker's profile

Beginningwoodworker

13347 posts in 3137 days


#8 posted 02-16-2011 03:28 AM

ok will, try that Neil when I start working on the motor.

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Beginningwoodworker

13347 posts in 3137 days


#9 posted 02-16-2011 03:42 AM

Neil, someone told me I need miter lock handle? Do you see one on my?

View NBeener's profile

NBeener

4808 posts in 2638 days


#10 posted 02-16-2011 03:54 AM

Now that I look harder at the pictures … they might be right.

Take a look at this picture of mine … with the yoke and the motor taken off:

At the bottom of the picture, toward the right, is a ball-knob, on a lever.

That’s what clamps the yoke in place. When you release the clamp—pulling it toward you—it allows you to pivot the motor.

Hmmmm.

-- -- Neil

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Beginningwoodworker

13347 posts in 3137 days


#11 posted 02-16-2011 04:00 AM

Maybe I will have to look into it. Really cant check right now, since I have the saw apart.

View NBeener's profile

NBeener

4808 posts in 2638 days


#12 posted 02-16-2011 04:10 AM

You DO have the king bolt.

What you seem to be missing is the lever.

It’s really a ball … attached to a stick … with a big nut at the end.

The nut threads onto the king bolt—that big slotted thing in the center of the yoke.

And then there’s a LONG set screw …. that’s not threaded anywhere but at the very top. That set screw goes sideways into the yoke, and keeps the king bolt from turning, when you set and release the yoke clamp.

-- -- Neil

View Roz's profile

Roz

1693 posts in 3250 days


#13 posted 02-16-2011 04:11 AM

Hey Charles, I am not sure what a Ras is, but there are a couple of bits of info I might be able to offer. I use to work on antiquated electromechanical devices, analog computers and such.

WD-40 is fantastic for cleaning but is not a long term lubricant. If you remove grease from inside replace it with fresh grease. Running with WD-40 as the only lubricant will result in equipment damage. The “WD” stands for Water Displacement, which is what WD-40 was originally developed to do.

If the bearings you speak of are not sealed and can be removed you can soak them in machine oil or motor oil for about 6 hours and any grit or trash inside the bearing will wash out. Pick them up periodically and try to spin them. It will help free the ball or needle bearings. Replacement bearing of the correct ID and OD are most likely available from a local industrial material supply house.

Good luck and have fun with your project.

-- Terry Roswell, L.A. (Lower Alabama) "Life is what happens to you when you are making other plans."

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Beginningwoodworker

13347 posts in 3137 days


#14 posted 02-16-2011 04:13 AM

RAS is a radial arm saw, someone suppose to be senting me a picture.

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