(800) 853-2651
SHOP NOW

DC Motor Repair

V

Vicinalvictor

Well-known Member
Does anyone know what usually burns up in a DC motor when it goes bad and what it costs to have it repaired? 800 watt, 36 volts. Reason I ask
is because it maybe cheaper and less hassle to buy a new one.
 
It's rare for one to burn up.

Have you looked at the brushes? Could be worn down, or stuck. If it has been stored, could be dirt dobber nests in it.

If nothing obvious, might take it to a starter/alternator/generator shop, see if they would be interested in looking at it.
 
What was the application? Lots of things to consider, but shop rates being what they are, unless it's a large motor or one of a kind thing, might be better off to get a new one. Who's motor is it. picture of tag would be helpful
 
Depends on it is a brush type of a brush-less type. Brush type most of the time it is the brushes them self that go bad. Brush-less the bearings go bad then lock it up and then it gets hot and can burn out the wiring
 
To answer "what usually burns up" a DC motor that could be armature or field windings.

To answer a common cause of non operation but its NOT burned up would be worn down brushes or brush hold down spring assemblies that are stuck or corroded and NOT holding brushes tight down against commutator.

Perhaps even a dirty oiled up or corroded commutator.

Other problems I've seen are badly worn down bushings allowing the armature to drag up against the fields NOW THAT REALLY HEATS THINGS UP.

Field wiring shorted to case is another possible cause I've seen

I've also seen burned and melted wires and solder where the armature wires connect to the commutator...

There's more but that's enough for now

John T
 
Good synopsis, John.

When 10 or 11 I "taught myself" how to drive in my parents 1947 Pontiac with three on the tree and foot operated starter.

No, my mother did know that I was doing it and I didn't have the key, so I learned how to use the gears and clutch using the starter. This worked surprisingly well and surprisingly long but eventually things stopped working. I had overheated the field coils burning them open.

It took awhile but I eventually owned up to it.

Dean
 
Add to what John said, bearings or bushing are worn. Field windings come in contact with armature.
 
Where are you located? I have a Cushman industrial cart I'm getting ready to scrap. You can have the motor if you come take it out. Tulsa OK
 
Better than Michigan, we usually get one or two 4 to 6 inch snow storms but it is usually all gone in a few days. 4 to 6 days below 0 usually not in a row, not unusual to have a 60 deg day in the middle of winter. Summers are hot but electricity is cheap.
 
You must log in or register to reply here.

Similar threads

J
Speaking of 4patriot backup power
Replies
17
Views
1K
buickanddeere
B
D
Quincy 310 - 23 motor
Replies
10
Views
550
Destroked 450
Destroked 450
A
1953 DC Case Wet Clutch? And other questions
Replies
14
Views
886
JOCCO
J
C
SOS Massey Ferguson HELP--Update
Replies
6
Views
481
Bill(Wis)
B
D
Trying to understand cab/lights wiring connection to light switch on farmall 826 diesel
Replies
2
Views
229
used red MN
U
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.

Copyright © 1997-2024 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

Back
Top