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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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03-29-2013, 07:20 AM | #1 |
Not Yet Wild
Join Date: Mar 2013
Posts: 2
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Motor issues
Ok, I am losing my religion here. First the background. I have a 1988 ezgo with the toaster oven that has been upgraded to 48V. The other day when I backed out of my garage and switched back to forward the motor stopped and the only thing it was doing was making a chattering noise as was the solenoid. During troubleshooting I took the motor out and tried to bench test it. I hooked A2 to S1 and applied voltage across A1 and S2. The motor only makes a chattering noise and it is locked down so it can not even turn by hand. With no power it turns freely by hand. I tested it out with an ohm meter and determined I has a short from the stator to the chassis of the motor. So I found a used replacement motor locally. When I picked the motor up, the guy I boght it from hooked it to a 12V battery and verified that it indeed runs. When I got home and tried it in my cart I got the same result. I removed the motor and attempted to bench test it as well. No mater what combination of connections I try it still will not run. Turns free when not on power but locks down under power and chatters. With a meger I have tested each coil independently, results that they have good continuity. I have tested each coil to each other with no continuity. As well as each coil to the chassis with no continuity.
Am I missing something here? The motor checks out. I saw it run before I brought it home. And under a normal bench test it should run. Someone help me out here please I have worked as an electrician for years and this defies all I know about motors. Any help woul be appreciated. |
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03-29-2013, 12:04 PM | #2 |
Gone Wild
Join Date: Nov 2012
Location: Ontario , Canada
Posts: 609
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Re: Motor issues
First off we need more info. On what style of cart you have .
Is the front / reverse switch on the dash or down by your knee ? This will determine if you have a series or sexpex drive system Check out the stickeys on electric EZGO on the site -- read them , that will get you started There could be a good chance your original motor is not the problem Cheers ! Last edited by Great white north; 03-29-2013 at 12:30 PM.. Reason: Add sentence |
03-29-2013, 02:51 PM | #3 | |
Gone Mad
Join Date: Oct 2009
Location: Buford, GA
Posts: 8,988
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Re: Motor issues
Quote:
Links: Owner's, Parts, and Service Manuals: http://www.buggiesgonewild.com/elect...g-manuals.html Dana Axle: http://www.buggiesgonewild.com/attac...5-28148g01.pdf |
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03-29-2013, 03:11 PM | #4 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,406
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Re: Motor issues
Series motor test ... curious what the battery pack voltage drops to when you try to go & the chattering begins ?
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03-29-2013, 05:16 PM | #5 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,167
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Re: Motor issues
These motors can not be bench run!!!!!!!!!!!!!!!!!!!! The armature will hit the stator and damage things big time. The front bearing is not part of the motor!
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03-29-2013, 09:13 PM | #6 |
Not Yet Wild
Join Date: Mar 2013
Posts: 2
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Re: Motor issues
The F/R switch is by my knee and it is a series wound motor. By bench test I meant that I hooked it directly to the batteries bypassing the other electronics while mounted in the cart. I have not tested the load drop when hooked up but I did hook it directly to the charger with the same result. At this point I am sure there is a motor problem because I cannot get it to run with just the batteries and the motor. Any other suggestions?
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03-29-2013, 09:17 PM | #7 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,167
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Re: Motor issues
I agree with your diagnosis. Bad Motor. Could be brushes but often there is damage to the commutator when the brushes fail to a point that the motor doesn't run.
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03-29-2013, 10:01 PM | #8 | ||
Stay thirsty my friends!
Join Date: Jan 2007
Location: Suburban Chicago
Posts: 24,284
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Re: Motor issues
Quote:
Quote:
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