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09-28-2011, 05:08 PM | #21 |
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Join Date: May 2010
Location: Madison, NJ
Posts: 5,230
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Re: Noisy generator bearing?
The 2 brus gens do not have oilers...bearings just get packed like wheel bearings and last forever (within my available observation period) unless heavily loaded by over tight belts. Some 12 V armatures/rear covers have bearings, normal '39-48 stuff has a rear bushing and oiler.
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09-28-2011, 05:58 PM | #22 |
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Join Date: Jul 2010
Location: Denver, CO
Posts: 316
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Re: Noisy generator bearing?
If it's noisy, does that mean it's shot already or does it just need more grease??
It is a 2 brush generator for sure. |
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09-28-2011, 10:37 PM | #23 |
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Location: Ft Mohave,Az
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Re: Noisy generator bearing?
replace it with a new one
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09-29-2011, 07:30 PM | #24 |
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Posts: 4,751
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Re: Noisy generator bearing?
the 39 Gen running a fan on the pulley. I would disassemble the generator and inspect how the front end was put together. There are a number of special washers that have to be assembled correctly. They are for felt seals that seal dirt out of the original open bearing. I use a Koyo 6203-RS it has two rubber seals, I then remove the felt seals but use all of the steel washers in their proper positions for proper spacing. I have also found several generator pulleys with loose retaining nuts or bad keys.
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09-29-2011, 09:26 PM | #25 |
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Location: Sydney, Australia
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Re: Noisy generator bearing?
I had a squeaky front bearing in my generator, it was a modern sealed unit, I replaced it twice before I found a quieter one, then the one I replaced it with lasted about three months before it failed.
In absolute frustration I took it to an auto electrician who charged me $70.00 for a new bearing... Ouch. |
09-30-2011, 10:45 AM | #26 |
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Re: Noisy generator bearing?
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Kerby PS: I wonder how well those smaller case gens deal with heat build up during night time loads with the lights on and such. I imagine they are limited to low amp output too. Most of the gens are though. They have to increase in size to be able to deal with even 40 to 50 amp outputs plus the use of heavy duty regulators. Last edited by rotorwrench; 09-30-2011 at 10:50 AM. |
10-02-2011, 11:16 AM | #27 |
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Join Date: Jul 2010
Location: Denver, CO
Posts: 316
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Re: Noisy generator bearing?
I'm probably going to take it back to the place that rebuilt it and have him change the bearing, it's still under warranty. The good news is that it's charging okay. It's just noisy.
That's a good question about how it would charge with the lights on, I should try driving it with the headlights on and see how well it's charging then. |
10-02-2011, 11:42 PM | #28 |
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Re: Noisy generator bearing?
The genny that has holes in the pulley for the fan is a well made design ,two back to back tapered rollers ,the later ones had only a ball bearing .If its carrying a fan then it needs the two bearings ,
Last edited by FlatheadTed; 10-03-2011 at 12:27 AM. |
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