G2/G9 golf cart whirring noise

camperguy · 07-11-2017, 11:25 AM

Hey guys. First time poster long time reader. I have a yamaha g9 that is making a whining noise. I have changed the belt, one clutch weight, the oil and greased the clutch.

I am not sure where to go from here. Any help would be greatly appreciated.

Thanks.

Spicyunicorn · 07-11-2017, 12:09 PM

Could be dry starter/generator bearings

camperguy · 07-11-2017, 12:17 PM

I was wondering if it was The starter. Is there a way to test it?

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camperguy · 07-11-2017, 01:34 PM

https://www.youtube.com/watch?v=bxl1OixbTBw

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Lochlin · 07-11-2017, 02:03 PM

That does sound starter related. I would take it off and pop all of the rubber boots off and inspect the brushes / brush holder springs to make sure nothing is out of place.

Turn the starter by hand, fast if you have to, and see if something seems amiss. Make sure there is no slop when turning it with "slop" meaning any side to side motion of the starter pulley. Round and round only or you have a bad bearing in there. When turning it, you really should only really feel slight "bumps" of the brushes passing over grooves on the armature.

It's pretty easy to pop the top off of your starter as well. You can take it off, blow it out with compressed air and look in there with a flashlight to see if anything is out of place.

camperguy · 07-11-2017, 04:28 PM

Thanks. Will head out with the wrenches shortly.

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camperguy · 07-13-2017, 11:50 AM

Wasn't the starter boys any other ideas?

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Spicyunicorn · 07-13-2017, 11:53 AM

Pull the belt of and run the motor isolate it to motor or differential

camperguy · 07-13-2017, 12:54 PM

I think it's motor related. I had the clutch belt off when the starter was on and it still made the noise

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Lochlin · 07-13-2017, 02:47 PM

Probably crank bearings. I have one like that. I just deal with the noise. When the bearings fail is when I'll worry about it.

07-11-2017, 11:25 AM	#1
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8	G2/G9 golf cart whirring noise Hey guys. First time poster long time reader. I have a yamaha g9 that is making a whining noise. I have changed the belt, one clutch weight, the oil and greased the clutch. I am not sure where to go from here. Any help would be greatly appreciated. Thanks.
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8

07-11-2017, 12:09 PM	#2
Spicyunicorn Gone Wild Join Date: Jun 2015 Location: NW Iowa Posts: 1,669	Re: G2/G9 golf cart whirring noise Could be dry starter/generator bearings

07-11-2017, 12:17 PM	#3
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8	Re: G2/G9 golf cart whirring noise I was wondering if it was The starter. Is there a way to test it? Sent from my SM-G930W8 using Tapatalk
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8

07-11-2017, 01:34 PM	#4
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8	Re: G2/G9 golf cart whirring noise https://www.youtube.com/watch?v=bxl1OixbTBw Sent from my SM-G930W8 using Tapatalk
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8

07-11-2017, 02:03 PM	#5
Lochlin Gone Wild Join Date: May 2011 Location: Pittsburgh Posts: 2,948	Re: G2/G9 golf cart whirring noise That does sound starter related. I would take it off and pop all of the rubber boots off and inspect the brushes / brush holder springs to make sure nothing is out of place. Turn the starter by hand, fast if you have to, and see if something seems amiss. Make sure there is no slop when turning it with "slop" meaning any side to side motion of the starter pulley. Round and round only or you have a bad bearing in there. When turning it, you really should only really feel slight "bumps" of the brushes passing over grooves on the armature. It's pretty easy to pop the top off of your starter as well. You can take it off, blow it out with compressed air and look in there with a flashlight to see if anything is out of place.

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07-11-2017, 04:28 PM	#6
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8	Re: G2/G9 golf cart whirring noise Thanks. Will head out with the wrenches shortly. Sent from my SM-G930W8 using Tapatalk
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8

07-13-2017, 11:50 AM	#7
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8	Re: G2/G9 golf cart whirring noise Wasn't the starter boys any other ideas? Sent from my SM-G930W8 using Tapatalk
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8

07-13-2017, 11:53 AM	#8
Spicyunicorn Gone Wild Join Date: Jun 2015 Location: NW Iowa Posts: 1,669	Re: G2/G9 golf cart whirring noise Pull the belt of and run the motor isolate it to motor or differential

07-13-2017, 12:54 PM	#9
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8	Re: G2/G9 golf cart whirring noise I think it's motor related. I had the clutch belt off when the starter was on and it still made the noise Sent from my SM-G930W8 using Tapatalk
camperguy Not Yet Wild Join Date: Jul 2017 Posts: 8

07-13-2017, 02:47 PM	#10
Lochlin Gone Wild Join Date: May 2011 Location: Pittsburgh Posts: 2,948	Re: G2/G9 golf cart whirring noise Probably crank bearings. I have one like that. I just deal with the noise. When the bearings fail is when I'll worry about it.

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