Bearing collar for Woods motor

Lebo · Post by **Lebo** » Sat Jan 31, 2009 10:11 pm

Does anybody have a front bearing collar for a Woods 7.5 or 5hp motor. A Motor shop really messed up my collar and the shaft threads. Has anyone had to repair or replace the collar threads or shaft threads? Can a machine shop clean up or otherwise fix the threads? I paid a lot of money to get the motor rewound and now I have messed up threads on the collar and shaft. They just "powered through" the damaged threads to get the collar back on and never said a word to me. I noticed it when I was putting the motor back in and decided to look into things a little deeper. Now I am ticked and do not know what I can do to fix the problem. They can't just reverse time and fix the threads and it is not like there are replacement parts at the local Home Depot. Any suggestions or recommendations are appreciated.

Lance

mystry_tour · Post by **mystry_tour** » Sat Jan 31, 2009 10:20 pm

Yep. I would take it back and demand to see the Owner/shop forman. I am sure you paid a bit of cash for your work and it is sad you have the problem. It is up to the shop to fix or pay for the fix.
Tour
P.S....done that myself

Lebo · Post by **Lebo** » Sat Jan 31, 2009 11:18 pm

I am going to take the motor back and talk to the manager. However, I am not sure where it will get me or what to ask for. I could ask for some money back but what I really need is to get the collar and shaft threads fixed. I do not think they can do it and I will still be stuck with a less than ideal motor after spending a ton of money on this saw. They can also just say that is how it was when I brought it in. My word against their word. I guess I will just have to see what happens. Thanks

crzypete · Post by **crzypete** » Sat Jan 31, 2009 11:33 pm

Hey Lebo,

Sorry to hear of the damage. This kind of stuff makes me sick to my stomach. senseless waste.

I can't really picture what you are dealing with, a pic would definitely give me a better idea of the best course of action- really depends on how severe the damage is.

One technique on fixing threads can be to use a tap of the right tpi as a scraper to help debur lightly damaged threads.

You can also buy thread files which are serrated- you need the right pitch file here as well.

I have also had luck using a straight triangular file to ease areas.

Pete

Lebo · Post by **Lebo** » Mon Feb 02, 2009 4:30 pm

Thanks for the replies guys. I am on the road but will try to get a picture when I get back. They went to some real lengths to try and get this collar off. They put some major torque on this thing the wrong way. It really only needed light pressure to get off if they turned it the right way. I had already taken the collar off to check out the bearings when I first got the saw and did not crank it down when I put it back on. After reading past post on how to get this collar off I did not have a problem at all. Looks like they tried to polish it up so I wouldn't notice. The collar can thread on about 2 turns before hitting the bad threads. It is going to take a wrench to get it on the rest of the way. If I forced it on I may not ever have to take it off again but this thing isn't cheap and I want it fixed right. If it was only cosmetic I could handle it but they jacked up the threads and hoped I would not notice

Thanks again.

mystry_tour · Post by **mystry_tour** » Mon Feb 02, 2009 4:41 pm

Thats sad Lebo. Here we try to protect the old stuff or any machine and someone screws it up. It's not right and they should have to replace or fix
Reg

Lebo · Post by **Lebo** » Fri Feb 06, 2009 11:28 pm

For those who are interested, I talked to the owner of the shop and he spent 2 hrs with me. He took the collar to a metal lathe and got it looking almost normal. He did his best with the collar and shaft threads and now there are only a few rough spots but I can live with it. Once he was done with the collar I told him that the motor was louder now than when I took it in. I almost did not saw anything because I did not want to seem like I was nit picking. Sure enough, one of the bearings they put in was bad. He fixed that, then I asked him to show me that it was in fact pulling the correct amps after the rewind. It wasn't. It was acting like a 5hp motor instead of the 7.5hp it rates. He was a little confused by that. They just matched the windings that came out of the saw. The saw had already been rewound once. Garbage in garbage out. Without the technical specifics of the woods motor I was afraid it might be "light in the copper windings." I do not know a lot about these motors but I guess they can short you on the windings on purpose or on accident and you motor will come up short on the power end. Copper is steep these days. He said it has the correct amount of windings and suggested that we delta wire it for more power and torque. He said it will run a little hotter but since I do not use it continuously I think it will be fine. For all I know this was delta wound originally way back in 1955. Anyway, he also took $175 off the original bill and was very helpful given the circumstances. He knew they screwed it up. Now I just hope the stator is not out of round with all the jacking they did to get the collar off.

crzypete · Post by **crzypete** » Sat Feb 07, 2009 12:15 am

Great ending. Glad it worked out. The two motor shops that I have used have both been stand-up places that are definitely old school in values.

you must be itching to get that saw fired up now. waiting for them to rewind it again will probably feel like an eternity.

Pete

Lebo · Post by **Lebo** » Tue Feb 17, 2009 8:26 pm

All, Crzypete,

Not quite a good ending just yet. The motor ran really strong at the motor shop before I brought the motor home.. lot of torque and power. Now I seem to have a problem with the mag starter. The mag starter worked fine with this motor before I took the motor into the shop. Now however, it (the mag starter) makes a very rapid, loud stutter for a few seconds when I first turn on the motor. Do you have any idea why a rewind would cause this? Again the motor runs fine but the mag starter sounds way jacked up for a few seconds on initial start. Something is not right. I have a 3phse rotary converter powering the motor. The mag starter did not indicate any problems BEFORE I had the motor rewound. I am unsure if the motor was 440 before I had it rewound but I know it ran weak before I had it rewound. I had it rewound to 220. So now I have an issue with the starter that seems to be caused by the new motor winding. Any ideas?

crzypete · Post by **crzypete** » Wed Feb 18, 2009 12:06 am

My gut guess is dust within the contact block in your switch- or corrosion. Disconnect the power and clean the badboy out. While you are in there make sure that your coil is 220v and not 440v.

Pete