Up and down motor help please

[Peter Drouin]

Don't you have 2, The third one  Is that the one on the shaft that goes to the gearbox? I don't remember [old timers]

Be sure you look at the things Mr Parsons talked about, He works on the mills every day.

[bkaimwood]

I've heard of many issues not being resolved after some part replacement, and the phrase "can't be that, its been replaced". NEVER assume that any component is good based upon the the fact that you just replaced it. Most of us have, or know someone who has, been burned with a new bad/defective part. I've lost track of counting new bad parts on both my fingers and toes. This thread is moving along nicely, and in a good direction, so this post is just hopefully a good addition to aiding someone's future diagnostics, and saving someone from assumption. Hopefully your mill issues are resolved shortly. Like many have said, poor connections are a big deal, an undersized motor is definitely a concern...

[richard boyd]

With this being a new motor with maybe 4,000 board foot sawed how would brushes be worn out? I know I have to do a lot of up and down with the motor mainly because { no set works } I use the rule scale and can't hit the mark first or second or third time.    As far a sprockets there is 4 of them because mill has 2 lift chains.Again thanks for the help.

[Cazzhrdwd]

I had the same problem with a new up down motor. It wasn't getting hot but it did have some binding issues, only happened a handful of times.

I've had more problems with the fingers on the drum switches breaking off. You couldn't see it because just a small amount would still be attached where they screw into the switch. They seem to get a crack where they attach which effects current.

[paul case]

Check the lube level in the up/down gearbox. That's a worm drive, the contact point between the 2 gears needs to be immersed in oil, just splashing some oil on the gears is not enough. A steel worm running on a brass gear will bind up if run dry.

Even if this isn't the problem check lube level in that box anyway. My mills had a clear plastic plug(for a sight guage I guess) that both were broken off when my box seized up. The plugs were at the bottom of the box on the back side so you couldn't see them. I had to go thru the box on one  mill and change all the bearings and seals.

My guess is the motor is your problem. That bigger motor upgrade will help a lot.
PC

[Magicman]

The only problem that I have ever had with up/down was the gearbox.  I had to replace both bearings.  I then overfilled the gearbox with lube.

[Ga Mtn Man]

Magicman, did you "overfill" intentionally just to be sure?

[Magicman]

Yes, because the way the gearbox is designed, there is no way for the lube to get to the shaft bearings.  It is slow speed so overfilling is not an issue.

[Chuck White]

Check the lube level in the up/down gearbox. That's a worm drive, the contact point between the 2 gears needs to be immersed in oil, just splashing some oil on the gears is not enough. A steel worm running on a brass gear will bind up if run dry.

Even if this isn't the problem check lube level in that box anyway. My mills had a clear plastic plug(for a sight guage I guess) that both were broken off when my box seized up. The plugs were at the bottom of the box on the back side so you couldn't see them. I had to go thru the box on one  mill and change all the bearings and seals.

My guess is the motor is your problem. That bigger motor upgrade will help a lot.
PC

Absolutely!

I was going through brushes in my up/dn motor at a faster rate than I was happy with, so I ordered the bigger motor/gearbox assembly and installed it in 2014.

Used it 2 years, no issues!

It included the motor, bracket, gearbox, pulleys, belt, shaft and sprockets. The Part # is A11585

It is the same motor as used in the newer mills.

That upgrade was money well spent!

Makes for some close quarters putting it in place, but it will fit nicely!

NOTE:  Wood-Mizer now calls for the gearbox to be filled rather than just half full or so.

[richard boyd]

Gear box is full of ATF. That's what I'm doing is upgrading to the newer motor and pulleys. The original motor was stolen off of mill before I bought it and was replaced but have no idle of the weight so could be to heavy also. WM told me to not go over 125 pounds on new motor but this motor was already on it so I left it on mill.