Grinding noise in drive train - MVAgusta.net
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post #1 of 85 (permalink) Old 04-28-2019, 03:55 PM Thread Starter
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Grinding noise in drive train

On my 18k mileage 2016 TVL, I’m hearing an intermittent grinding noise slightly when rolling, engine off and when in first in slack rpms going up to second. I think I’m getting metal shavings on my chain and rear hub, but it could be road debris. I can hear it mostly when Im going from first to second and then I don’t hear it. The engine sounds great. I know the engine may sound like it has marbles in it, but this is different. I can’t tell if it’s from the gearbox or hub. The chain is at 110 mm. There is no shake of the wheel while on the center stand and and I can’t hear it just turning the wheel. Pads are good and the chain is well maintained. Is it most likely the hub? Is there a positive check I can do before I consider taking it to the Ducshop in Atlanta?

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post #2 of 85 (permalink) Old 04-28-2019, 05:21 PM
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Get the bike on a rear stand and see if there is any movement in the rear wheel is a good start.
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post #3 of 85 (permalink) Old 04-28-2019, 08:02 PM Thread Starter
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I did, as I stated, and it feels tight. If here isn’t an obvious problem you guys have encountered, I suppose I will take it in soon. I know this is a noisy bike. I don’t think it is chain slap.

Terry_________________________________________
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post #4 of 85 (permalink) Old 04-29-2019, 01:20 AM
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Check the sprocket nut, take the clip off and feel for movement. Also check to see if sprocket carrier is rubbing the hub, I suspect they are your problem
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post #5 of 85 (permalink) Old 04-29-2019, 01:26 AM
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Cush drive.....
Remove the sprocket nut clip and retorque the nut....
Check for wear on the left side of the hub

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post #6 of 85 (permalink) Old 04-29-2019, 06:42 AM Thread Starter
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I will check the sprocket nut clip today when I get home. The noise is all the time but sounds louder when starting to load. I have seen extra dust on the chain side. It is a grind which sounds like every wheel turn.


I hope there is not much damage. I replaced the cush drive about six months ago and there was little wear then. I do not do rabbit starts. So, it could be rubbing against the hub and the hub and bearings be fine?
I do not feel any wheel shake and I thought the hub issues were resolved.

Terry_________________________________________
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post #7 of 85 (permalink) Old 04-29-2019, 08:32 AM Thread Starter
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Should I clean and repack my hub bearings or is it not necessary on a 2016 18k mile bike while checking out the scrub?

Terry_________________________________________
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post #8 of 85 (permalink) Old 04-29-2019, 08:46 AM
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It is supposed to be done every 12K.....
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post #9 of 85 (permalink) Old 04-29-2019, 09:17 AM Thread Starter
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I will report back tomorrow what I find. Thanks, guys

Terry_________________________________________
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post #10 of 85 (permalink) Old 04-29-2019, 12:51 PM Thread Starter
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Ok. I checked it over lunch. The paint marks for factory torquing were off on the sprocket nut by about two inches and the sprocket would wobble a bit. My stainless steel tapered socket, which has the front nut remover milled out of the middle would not seat by about 7mm, not letting me take the nut off or tighten. The hub protrudes out about 3 mm and prevents the socket from seating. I took the starboard side off fine. I could probably figure this out, but I know you guys could save me about two hours, or perhaps an Amazon delivery of another socket.

Is the sprocket supposed to wobble a bit with the cush drives? I can not recall.

Terry_________________________________________
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