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01-16-2016, 03:34 PM | #1 |
Member
Join Date: Apr 2015
Location: Tamborine Mountain,Queensland, Australia
Posts: 85
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Generator cut-out
Over the past few months, we have had instances where the generator cut-out has failed, once it did not open on engine shut down and the second time it failed to close with the generator operating.
This has got to get me thinking, what would I do if I did not have a spare cut-out on a long trip? My "bush mechanic" logic tells me to remove the faulty cut-out, start the engine , then attach a jump wire from the generator terminal to the cut-out lead. Before stopping the engine, disconnect the jump lead the switch off the engine. My understanding is that the cut out serves one purpose, and that is to prevent battery voltage getting to the generator but allowing generator charge to get to the battery. It is purely a switch and does not regulate the charge? Am I correct ?? |
01-16-2016, 04:17 PM | #2 |
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Join Date: May 2010
Location: Bucks County, PA
Posts: 11,454
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Re: Generator cut-out
Yes your correct and use an adequate sized wire as a jumper. Also remember a generator can fry itself when it's isolated from the load. That's why I run diode cutouts nothing to stick or hang up
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01-16-2016, 04:26 PM | #3 |
Member
Join Date: Apr 2015
Location: Tamborine Mountain,Queensland, Australia
Posts: 85
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Re: Generator cut-out
Thanks Mich, hope I don't have to resort to doing it!!
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01-16-2016, 04:32 PM | #4 |
Senior Member
Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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Re: Generator cut-out
Are you using a reproduction or original ?
The originals are pretty bullet-proof and the repo's have been problematic. The cover can be removed on the originals and cleaned/ adjusted. I like using an original along with one of Tom W's EVRs. |
01-16-2016, 06:13 PM | #5 |
Senior Member
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Re: Generator cut-out
Mitch Can you post more on Diode cut out? I am not up on these. But am interested. Thanks Don
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01-16-2016, 07:39 PM | #6 |
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Join Date: May 2010
Location: Mpls, MN
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Re: Generator cut-out
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01-16-2016, 08:57 PM | #7 |
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Join Date: Jul 2014
Location: Danbury Ct
Posts: 1,254
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Re: Generator cut-out
On my 29 tudor my "cutout" is my right hand on the master switch mounted near the starter! Actually I am running an alternator, but I like the peace of mind of knowing that no current is flowing anywhere when I am away from my tudor.
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01-16-2016, 09:40 PM | #8 |
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Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
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Re: Generator cut-out
When shutting down, check for an ammeter discharge, indicating the cut out might be STUCK. Try "tapping" on it & re-check the ammeter reading. This is not an uncommon happening. "Sometimes", re-starting & shutting off will open it.
I had one BEAUTIFUL cut out, with a riveted-on cover, it would stick often. When I remove the cover, part of the innards were BENT & it had only a tiny amount of air gap! I straightened it & it worked perfect! Looked as though the assembler dropped it, just before the cover went on??? Bill W.
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"THE ASSISTANT GURU OF STUFF" Last edited by BILL WILLIAMSON; 01-17-2016 at 01:29 PM. |
01-16-2016, 10:00 PM | #9 | |
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Join Date: May 2010
Location: Bucks County, PA
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Re: Generator cut-out
Quote:
You can buy just a diode and convert an old style cut out or purchase a semi conductor cutout assy.. Check brattons or snyders web site.... I use the diode style with Tom's EVR his units can be wired for either way.. I'm for having no moving parts or contacts to fail |
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