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generator
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- Team Cub Mentor
- Posts: 24144
- Joined: Sun Feb 02, 2003 12:50 pm
- Zip Code: 43113
- Circle of Safety: Y
- Location: OH, Circleville
Re: generator
It really depends on what is failing in the generator but some typical signs are noise from the bushings / bearings, noise from the commutator / brush area. Unsteady or reduced output voltage. I looked at a generator at DSCF that had only 1/4 volt output at high idle. If using an analog meter (my preference for generators) the needle may be very unsteady indicating problems with the brushes or commutator.
The other sign would be smoke! Once the smoke is released most electrical components quit working....
The other sign would be smoke! Once the smoke is released most electrical components quit working....
Bigdog
If you can't fix it with a hammer, you've got an electrical problem.
My wife says I don't listen to her. - - - - - - - - Or something like that!
http://www.cubtug.com
If you can't fix it with a hammer, you've got an electrical problem.
My wife says I don't listen to her. - - - - - - - - Or something like that!
http://www.cubtug.com
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- 10+ Years
- Posts: 3369
- Joined: Mon Feb 17, 2003 8:48 pm
- Zip Code: 28081
- Circle of Safety: Y
- Location: NC, Kannapolis
Re: generator
What BigDog said plus, could be regulator or bad wiring (checking all grounding points) as well as generator problems if not charging.
"I'd rather be a mechanic in the shop"- Henry Ford
252646 & 221525. 195897 (Gone, but not forgotten)
252646 & 221525. 195897 (Gone, but not forgotten)
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- Team Cub
- Posts: 71
- Joined: Fri Jul 04, 2008 3:43 pm
Re: generator
Hi Byron,
For your question: "what are the symptoms of a generator gone bad", maybe try this.
1. Remove generator & with battery cables, touch the ground cable on the generator body while at the same time, touch the generator output connection with the other cable.
2. If the generator spins like a starter, it is good; if not it is bad.
3. If bad, either bring it to generator shop for test & rebuild; or, try to rebuild it yourself -- the first generator re-build takes longer; but the second one is a snap if you do not have too many senior moments.
4. If generator has bearings on both ends they are usually still good; however, if they have bushing, these bronze bushings can wear & should be replaced if worn because the armature can get off center & possible hit the sides & ground out.
Not a big deal to change generator bushings.
5. The more probable cause of generator failure is worn brushes & worn commutator. Worn brushes can cause the steel brush holders to move downwards & ground out on the commutator, and worn brushes can also cause the open grooves on the commutator to fill up with debris & ground out on each other in lieu of being insulated from one another.
6. Not a big deal to remove & provide new brushes. For cleaning comutator grooves, take a hacksaw blade & grind the sides on a grindig wheel so the teeth are narrow & clean out all commutator grooves to about 1/32" deep.
7. Prior to reassembly, get a test lamp or multimeter to insure continuity between each individual segment of the small diameter commutator to each individual segment of the larger diameter armature -- if no continuity, (sometimes rare), you need a new armature.
8. If you have any doubts about remembering re-assembly, use your cell phone to take picutes of disassembly so you can readssemble it to bring it to a repair shop & not be embarrassed to let the repairman know you could not fix it.
Hope this helps -- nothing like a good challenge !
For your question: "what are the symptoms of a generator gone bad", maybe try this.
1. Remove generator & with battery cables, touch the ground cable on the generator body while at the same time, touch the generator output connection with the other cable.
2. If the generator spins like a starter, it is good; if not it is bad.
3. If bad, either bring it to generator shop for test & rebuild; or, try to rebuild it yourself -- the first generator re-build takes longer; but the second one is a snap if you do not have too many senior moments.
4. If generator has bearings on both ends they are usually still good; however, if they have bushing, these bronze bushings can wear & should be replaced if worn because the armature can get off center & possible hit the sides & ground out.
Not a big deal to change generator bushings.
5. The more probable cause of generator failure is worn brushes & worn commutator. Worn brushes can cause the steel brush holders to move downwards & ground out on the commutator, and worn brushes can also cause the open grooves on the commutator to fill up with debris & ground out on each other in lieu of being insulated from one another.
6. Not a big deal to remove & provide new brushes. For cleaning comutator grooves, take a hacksaw blade & grind the sides on a grindig wheel so the teeth are narrow & clean out all commutator grooves to about 1/32" deep.
7. Prior to reassembly, get a test lamp or multimeter to insure continuity between each individual segment of the small diameter commutator to each individual segment of the larger diameter armature -- if no continuity, (sometimes rare), you need a new armature.
8. If you have any doubts about remembering re-assembly, use your cell phone to take picutes of disassembly so you can readssemble it to bring it to a repair shop & not be embarrassed to let the repairman know you could not fix it.
Hope this helps -- nothing like a good challenge !
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- Cub Pro
- Posts: 28706
- Joined: Sun Feb 02, 2003 8:37 pm
- Zip Code: E1A7J3
- Skype Name: R.H. "Rudi" Saueracker, SSM
- Tractors Owned: 1947 Cub "Granny"
1948 Cub "Ellie-Mae"
1968 Cub Lo-Boy
Dad's Putt-Putt
IH 129 CC
McCormick 100 Manure Spreader
McCormick 100-H Manure Spreader
Post Hole Digger
M-H #1 Potato Digger - Circle of Safety: Y
- Twitter ID: Rudi Saueracker, SSM
- Location: NB Dieppe, Canada
Re: generator
Henry:
Some nice to see you posting again. Hope you are well and still engaged in your design work.
Some nice to see you posting again. Hope you are well and still engaged in your design work.
Confusion breeds Discussion which breeds Knowledge which breeds Confidence which breeds Friendship
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- Team Cub
- Posts: 71
- Joined: Fri Jul 04, 2008 3:43 pm
Re: generator
Hi Rudi,
Doing well -- still working -- thanks.
No doubt Byron is very intelligent -- like with many others, it is most admirable that he asks sincere questions on vintage equipment such as generators.
Maybe a "thought" for today when thinking about asking "Questions" on this Vintage Tractor Forum:
A. When a whole gang of non-hunters go elk hunting for the first time, it is easy to pick out the intelligent guys -- they are the ones who are brave & humble enough to first consult about the do's & don't details, & also the dangers involved with elk hunting with some old former elk hunter.
B. Also if one ever meets a top notch outstanding intelligent doctor that can quickly diagnose ailments during the first visit, he did not learn to diagnose patients by maintaining a zippered up mouth7 by not asking his former patients lots & lots questions.
C. Admit it or not, we all learned lots by questioning others. Vintage tractor mechanics are getting scarce.
Just trying to encourage Cub owners to continue to ask questions -- being a little informed makes much more sense than being a little un-informed.
Have a good weekend.
Doing well -- still working -- thanks.
No doubt Byron is very intelligent -- like with many others, it is most admirable that he asks sincere questions on vintage equipment such as generators.
Maybe a "thought" for today when thinking about asking "Questions" on this Vintage Tractor Forum:
A. When a whole gang of non-hunters go elk hunting for the first time, it is easy to pick out the intelligent guys -- they are the ones who are brave & humble enough to first consult about the do's & don't details, & also the dangers involved with elk hunting with some old former elk hunter.
B. Also if one ever meets a top notch outstanding intelligent doctor that can quickly diagnose ailments during the first visit, he did not learn to diagnose patients by maintaining a zippered up mouth7 by not asking his former patients lots & lots questions.
C. Admit it or not, we all learned lots by questioning others. Vintage tractor mechanics are getting scarce.
Just trying to encourage Cub owners to continue to ask questions -- being a little informed makes much more sense than being a little un-informed.
Have a good weekend.
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- 10+ Years
- Posts: 50
- Joined: Sat Feb 23, 2013 8:31 am
- Zip Code: 36441
- Tractors Owned: Farmall Cub, "Susie-Q" 61617 1948 /Woods 42 Mower, Sickle Mower. 2 gang disc, cultivators
Farmall Cub, "Sadie", 1949 Block Casting 2-3-S Duplex planter,Fert Distr
FarmallCub "Charlene" 22312 1948 Disc Plow, Flail Mower, Grader Blade - Location: 1510 OLD ATMORE ROAD, FLOMATON, AL FLOMATON, ALABAMA
Re: generator
Ahoy "Cubbies".....suggest you not overlook the simple factors......I have found on my 1948 Cub that a loose generator belt....and it doesn't have to be very loose ...will prevent a good power output. You gotta spin it to gen it!
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- 10+ Years
- Posts: 50
- Joined: Sat Feb 23, 2013 8:31 am
- Zip Code: 36441
- Tractors Owned: Farmall Cub, "Susie-Q" 61617 1948 /Woods 42 Mower, Sickle Mower. 2 gang disc, cultivators
Farmall Cub, "Sadie", 1949 Block Casting 2-3-S Duplex planter,Fert Distr
FarmallCub "Charlene" 22312 1948 Disc Plow, Flail Mower, Grader Blade - Location: 1510 OLD ATMORE ROAD, FLOMATON, AL FLOMATON, ALABAMA
Re: generator
Hello Rudi..... would you please refresh this [url]old[/url]Naval Aviation "sparky" the proper procedure for flashing the field on my 6 volt generator on my cub "Susie-Q". I saw a post on this subject several days past but, now I can't find it.
I like the way you present your expertise.
Chet sends
I like the way you present your expertise.
Chet sends
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- Team Cub
- Posts: 11884
- Joined: Tue May 25, 2004 8:02 pm
- Zip Code: 80501
- Tractors Owned: Cubs, MH Pony, Shaw, Allis G, 1934 Silver King, JD LA and LI, Gibson D, David Bradley Tri-Trac
- Circle of Safety: Y
- Location: CO, Longmont
Re: generator
Chet, If by "flashing" you mean polarizing, here's a post from the CBoK: http://farmallcub.com/phpBB2/viewtopic.php?f=11&t=56748
Bob
Bob
"We don't need to think more,
we need to think differently."
-Albert Einstein
we need to think differently."
-Albert Einstein
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