Power Problems

Forum for Maintenance and Repair topics. Feel free to ask questions or contribute.

Moderator: admin

Post Reply
mjfinger
Bronze Member
Posts: 3
Joined: Mon Oct 30, 2017 3:27 pm

Power Problems

Post by mjfinger »

Looking for help here. I have an older Mark V that I have upgraded several times but nothing to do with the motor. It was purchased in 1981. The problem is the motor and don't know if I need a rebuild or not. The motor doesn't hum or buzz so I don't think it is the motor itself. The motor will start up sometimes and run for a few minutes taking its time to come up to speed. Then i start cutting and it trips a breaker. It will reset immediately and the same thing happens. Then the next time it runs fine.

Sometimes I will turn on the switch and it won't start at all. Play with the switch a bit then...it fires up.

Is this a switch or capacitor problem or worse...a motor problems. All suggestions welcome.

Thanks.
User avatar
beeg
Platinum Member
Posts: 4790
Joined: Sun Oct 14, 2007 2:33 pm
Location: St. Louis,Mo.

Re: Power Problems

Post by beeg »

First off, your NOT using a extension cord are you? Do you have a dedicated circuit for the SS? When was the last time ya oiled both sheaves? It's more of a switch problem probably.
SS 500(09/1980), DC3300, jointer, bandsaw, belt sander, Strip Sander, drum sanders,molder, dado, biscuit joiner, universal lathe tool rest, Oneway talon chuck, router bits & chucks and a De Walt 735 planer,a #5,#6, block planes. ALL in a 100 square foot shop.
.
.

Bob
User avatar
dusty
Platinum Member
Posts: 21530
Joined: Wed Nov 22, 2006 6:52 am
Location: Tucson (Wildcat Country), Arizona

Re: Power Problems

Post by dusty »

If I had this problem, I would "first of all r4emove the motor drive belt to isolate the motor from the mechanical load. I would then disconnect the switch and bypass the switch with a pair of jumper wires. The problem you describe screams loudly of a bad switch.

If the motor starts right up, try this again three or four times and if symptoms don't change - go get a new switch.

While you have everything apart - clean (compressed air or vacuum) and lubricate (especially the sheaves).
"Making Sawdust Safely"
Dusty
Sent from my Dell XPS using Firefox.
User avatar
JPG
Platinum Member
Posts: 35600
Joined: Wed Dec 10, 2008 7:42 pm
Location: Lexington, Ky (TAMECAT territory)

Re: Power Problems

Post by JPG »

If replacing the switch(I reccommend doing that first)does not make the problem totally go away, it may be the start switch is intermittently sticking on. A long shot!!!!
╔═══╗
╟JPG ╢
╚═══╝

Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10
E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
claimdude
Gold Member
Posts: 460
Joined: Fri Dec 29, 2006 11:47 pm

Re: Power Problems

Post by claimdude »

Or, install a PowerPro upgrade ;-)

Jack
mjfinger
Bronze Member
Posts: 3
Joined: Mon Oct 30, 2017 3:27 pm

Re: Power Problems

Post by mjfinger »

Thanks for all of the quick replies. I kind of figured it is probably the switch. Going out to shop right now and will clean and oil the Sheaves and work with the switch. Liked the PowerPro upgrade idea but not the price so will work with what I have here. I'll get back and let you know how it goes.

P.S. No extension cord is being used and is on a dedicated outlet. At least the SS is the only thing running at one time on that circuit.
Post Reply