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Delco Starter/Gen. has high-pitched whine.


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#1 1965 Husky 1K OFFLINE  

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Posted June 05, 2011 - 08:59 AM

Have a delco starter/gen that has a high-pitched whine that paralells speed of engine. Charging fine. Could it be a bearing issue???? Has anyone ever run across this before??? I dont think it has been very long since it was overhauled, but I dont want to do it again if its not needed. I oiled the cups for the bearings- still noisy. I dont want to over-lubricate. Any and all suggestions appreciated.

#2 NUTNDUN OFFLINE  

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Posted June 05, 2011 - 09:08 AM

Have you put a multimeter on it to check to see what the voltage is that it is putting out? I am going to lean towards the bearings though. Do you happen to know if the bearings were replaced when the starter/generator was rebuilt?

#3 olcowhand ONLINE  

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Posted June 05, 2011 - 09:13 AM

I also lean toward a bearing. I'm not sure if the old lube cap type can be swapped to sealed bearing or not. But either way, it's likely a bearing.

#4 Texas Deere and Horse OFFLINE  

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Posted June 05, 2011 - 09:15 AM

I agree with the guys, I think it's a bearing giving you the noise.

#5 Bolens 1000 OFFLINE  

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Posted June 05, 2011 - 08:31 PM

Sometimes the belt will also make a whining noise that gets louder with the increased RPM's
Most likely a bearing though
  • Bill56 said thank you

#6 1965 Husky 1K OFFLINE  

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Posted June 06, 2011 - 07:17 PM

I was originally leaning the same way as you all. I took the belt off and manually spun the start/gen. Nice and quiet and very smooth. I didnt care for the looks of the belt. I changed the belt and all was history!!!! It didnt sound like a belt squeal to me , but I've been proved wrong once again! (no surprize).

#7 Bolens 1000 OFFLINE  

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Posted June 07, 2011 - 08:23 AM

Glad to hear you found the problem.
I had the same thing with my Bolens. I got a new belt and all was fine

#8 olcowhand ONLINE  

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Posted June 07, 2011 - 08:52 AM

I am happy to be wrong!

#9 NUTNDUN OFFLINE  

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Posted June 07, 2011 - 08:54 AM

I was originally leaning the same way as you all. I took the belt off and manually spun the start/gen. Nice and quiet and very smooth. I didnt care for the looks of the belt. I changed the belt and all was history!!!! It didnt sound like a belt squeal to me , but I've been proved wrong once again! (no surprize).


I am glad I was wrong as well. To be honest I don't think the bearings in the starter gens go bad too often. At least you don't hear about it much anyways.

#10 Bill56 OFFLINE  

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Posted June 07, 2011 - 09:19 PM

Glad it was a simple problem to fix.




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