OT Old saw

[OldRedFord]

Recently a friend of mine bought a Hammond Mercury Trim O saw.

Took it over to my house so we could go through it to give it some R & R. Might sell it. Heck only cost him $50.

Anyways it is a model M5 Serial M982.

Pictures # 1 - 3 are of the saw when we first got it in my garage. After giving it a good looking over I think it fell over on its side at one time. The handle to secure the blade arbor at a set height is broken off. Also the light is missing off the end of the flexible arm.

[OldRedFord]

Todays progress.

Went to the hardware store and made up a light from some pipe fittings, a lamp socket, and a replacement shield for a trouble light.

Then I decided to tidy up the wiring by putting ring terminals on all the ends in the switch box.

Then after that I decided it would be nice to be able to switch the light on and off separate from the saw motor. Ran a extra hot wire and made a few connection changes and now each are on separate switches. As I installed the light at first it only had power when the switch on the front was in the on position. Then you could turn on and off the light but the saw its self had to be on.

[OldRedFord]

Two more. I realized as I was taking the picture of the fuse box that I nicked a wire.

Next step is to disassemble everything and clean it up, remove all the flaky paint. Then new paint and reassemble.

[OldRedFord]

One other thing I noticed is the brushes in the motor are arching when it is under a load. (Hooked up to the saw via the belt) And is quite noisy. There is some resistance when you try to roll it over by hand. I thought it should roll easy.

Without it hooked up to the saw it runs nice and quiet. I do have a feeling that the motor is not original nor do the pulleys line up. The motor is only mounted with two bolts. The other two holes dont line up.

Im guessing the brushes are bad?

The motor is a Brown-Brockmeyer Dyna-Line 1/2 hp

I have posted this post on two other sites and no one has answered.

[fordman]

sounds like the motor is going bad. they should spin freely by hand without the belt on the motor. you can probably get a different motor to put on it and mount it so the pulleys line up.

[Happy_Camper]

That's a cool old saw!
Could be a few things. Soft brush springs, rough commutator, worn or pitted brushes, or too much drag from the arbor trunions.
The commutator should be a nice caramel color, if it's purple or black, you can get a commutator brush, and clean it. But if it is rough, it's better to have it turned and the mica back cut. Then a new set of brushes and springs, and seat the brushes to the commutator with a light load.
I've never tried cutting the commutator for an A/C motor, but would imagine it's like a D/C motor, in that there is a service limit to the cut depth.
Good luck with it!

[OldRedFord]

It seems the company that made the motor is long gone. Makes me wonder about getting parts for it. If a replacement is needed I think a Baldor is the only way to go here.

[amishbuggy]

I would get a new motor, at least 3 hp, 220v and change out the pulleys so you can run 2 belts. My Delta Unisaw (early 90's), 5hp 220v, runs 2 belts and is smooth as silk, of course the trunnion weighs 50+ lbs, so when I got my Jet contractors saw I was not happy with the vibration so I changed it over to a 2 belt set-up and it really smoothed it out, the 3hp china motor does'nt have near the ba!!s as my Delta but at least it's vibration free.

[binder56jd]

they don't make 'em like that anymore

what do you intend to do with it??

there are so many much more versatile saws on the market, i, personally, don't see much of a market for it--the base would make a great stand for other applications--electric motors will cost you more than a lot of good quality new saws-but if you have a use for it that will recoup your time and expenses--go 4 it

[AK F100]

That's a real cool old saw.