Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

Tool Talk Discussion Forum

HF electric motor problem

Welcome Guest, Log in or Register
Author 
Ken in Mich

04-19-2006 17:24:43




Report to Moderator

The motor is on a gravity feed metal cutting bandsaw. When I turn on the switch, it just humms and doesn't start, even with the belt off (no load at all) I wrap a rope around the pulley and pull start it and it works fine, with plenty of power. It just wont start on its own. The motor says it is induction started, is there any repair I can make?




[Log in to Reply]   [No Email]
GBusch

04-22-2006 05:25:16




Report to Moderator
 Re: HF electric motor problem in reply to Ken in Mich, 04-19-2006 17:24:43  
Ken, the motor hums because it doen't know the words. "MADE IN AMERICA"



[Log in to Reply]  [No Email]
MikeCatthemuseum

04-20-2006 22:09:11




Report to Moderator
 Re: HF electric motor problem in reply to Ken in Mich, 04-19-2006 17:24:43  
I'm going with T-Bone on this one because I have a motor on that POS Wilton drill press at work that does the same thing. The centrifugal switch goes over center and doesn't come back when the motor slows. I took it apart and found the shaft to be extremely rough turned. Not much you could really do. I tried to slick it down with emery tape and put some lith grease on it. Put it back together and it was about the same.

Final solution was an 18" 2x4 within close reach of the press. If it hangs up when you start it, whack the motor case with the 2x4 and you will hear the switch click back into start position. Seems to be getting better over time.

[Log in to Reply]  [No Email]
Ryman

04-20-2006 18:10:17




Report to Moderator
 Re: HF electric motor problem in reply to Ken in Mich, 04-19-2006 17:24:43  
In regards to the question of using a breaker to protect such a low current draw motor- I frequently use AC control circuits in my work and the best suggestion I can give you is to just use a fuse holder and a fuse. You can get fuses that are operable at this voltage all the way down to 1/8 of an amp.



[Log in to Reply]  [No Email]
Slowpoke

04-20-2006 01:55:38




Report to Moderator
 Re: HF electric motor problem in reply to Ken in Mich, 04-19-2006 17:24:43  
I was relying on the auto shut off on my Harbor Freight saw, but the blade jammed and burned out the start windings. If yours is the same and got very hot that's probably what happened. There is no thermal reset to shut the motor off. My motor always ran very hot anyway. After burnout, I could start it by giving the pulley a good twist. I got tired of that and replaced the 1 hp motor with an old American made 1/3 hp unit. It has no reset either, but it was the only motor I had that had the same mounting, RPM and rotation as the original except hp. It barely gets warm no matter how long it runs. Some day I'll find a good motor with a thermal reset. I have not been able to find a breaker that will work with the low current draw of the motor. Maybe someone will have some advice on that.

[Log in to Reply]  [No Email]
Dusty

04-20-2006 05:33:20




Report to Moderator
 Re: HF electric motor problem in reply to Slowpoke, 04-20-2006 01:55:38  
Slowpoke, they are play games with horse power these days. One hp = 746 watts.

Dusty



[Log in to Reply]  [No Email]
Slowpoke

04-20-2006 23:25:56




Report to Moderator
 Re: HF electric motor problem in reply to Dusty, 04-20-2006 05:33:20  
The motor name plate reads: 1 HP, .75KW, 110V, 14 Amps. Go figure.



[Log in to Reply]  [No Email]
frankiee

04-19-2006 20:13:30




Report to Moderator
 Re: HF electric motor problem in reply to Ken in Mich, 04-19-2006 17:24:43  
Don't touch the cap wires or the winding wires with hands until the cap has been discharged by crossing out the cap wires with a 20,000 ohm 2 watt resistor. Does this motor have a cap?
Please relay that info if you could.



[Log in to Reply]  [No Email]
Slowpoke

04-20-2006 23:35:10




Report to Moderator
 Re: HF electric motor problem in reply to frankiee, 04-19-2006 20:13:30  
It's a cap start.



[Log in to Reply]  [No Email]
old art

04-19-2006 19:56:06




Report to Moderator
 Re: HF electric motor problem in reply to Ken in Mich, 04-19-2006 17:24:43  
the other response are right on the problem so
carefully take the motor apart and check the switch and windings the motor is no good the way it is nothing to lose good luck art



[Log in to Reply]  [No Email]
Kevin Bismark

04-19-2006 19:17:16




Report to Moderator
 Re: HF electric motor problem in reply to Ken in Mich, 04-19-2006 17:24:43  
Yup, either the start switch is open or the start winding is burned open, do you have an resistance start induction run motor, or a capacitor start induction run motor, is your capacitor open, just a thought..
Kevin



[Log in to Reply]  [No Email]
T_Bone

04-19-2006 17:50:00




Report to Moderator
 Re: HF electric motor problem in reply to Ken in Mich, 04-19-2006 17:24:43  
Hi Ken,

The start switch isn't working located inside the motor case opposite of the shaft end.

The start switch stays closed until the motor hits 70% of it's rated rpm then the swicth opens droping out the start winding and the motor continues to run on the run winding. When the motor is shut off the motor winds down from running rpm, the start switch closes for a repeat cycle.

T_Bone



[Log in to Reply]  [No Email]
Ken in Mich

04-20-2006 14:50:59




Report to Moderator
 Re: HF electric motor problem in reply to T_Bone, 04-19-2006 17:50:00  
Thanks Guys, I'll tear it apart and see. I kind of think the winding might be burned out, because a little smoke and smell came out when it started last on its own. The motor is marked 1HP, but the manual says its supposed to have a 1/3hp.



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy