Rear Hub hot to the touch AFTER overhaul - MVAgusta.net
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post #1 of 27 (permalink) Old 05-16-2018, 10:16 AM Thread Starter
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Rear Hub hot to the touch AFTER overhaul

Over the winter I decided to be proactive about the infamous rear hub issue and take a look at the bearings before it potentially became a problem. Having taken apart the hub, the sealed smaller bearing was indeed on its way out. Following the instructions elsewhere on this site, I replaced the bearing, re-greased the hub, and put everything back together again. I was especially careful not to over-torque the hub pinch bolts (28Nm) or over-tighten the chain (8mm slack). I thought the issue was resolved.. until I went for the first long ride of the season yesterday. The bike felt totally normal, but when I pulled over and felt the rear hub, it was hot to the touch. Not exactly scalding hot, but if I were to leave my bare hand wrapped around the hub, it would eventually become too hot to continue -- I would guess ~60 Celsius. I never did this prior to replacing the bearings so I have no point of comparison.

So i guess my question is two fold:

1) Is this kind of operating temperature out of the norm or am I freaking out over nothing?
2) If it is a problem, what else could cause this given the new bearings? Possibly too little grease? I wasn't sure how much is too much so I didn't go crazy, although I did re-grease the needle bearing thoroughly.

Bike is an 07 Brutale 910R with 17K miles.
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post #2 of 27 (permalink) Old 05-16-2018, 10:33 AM
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post #3 of 27 (permalink) Old 05-16-2018, 11:20 AM
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Whatever you do, don't touch that brake disc attached to the rear wheel !!!

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post #4 of 27 (permalink) Old 05-16-2018, 11:31 AM
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I wondered the same thing as the OP; but have yet to remember to touch the swing arm after a ride.
But you are right there will be heat transfered from the rear brake.

I rarely use the rear brake...

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post #5 of 27 (permalink) Old 05-16-2018, 03:46 PM
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I am sure you have nothing to worry about.The hubs run warm to hot.As mentioned heat transfer etc.
As long as you used a good quality high temp grease you are good to go.


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post #6 of 27 (permalink) Old 05-16-2018, 04:19 PM
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Is 28nM the correct torque for those bolts?
Itís more than stated for my 2nd gen f4.


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post #7 of 27 (permalink) Old 05-16-2018, 05:47 PM Thread Starter
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Quote:
Originally Posted by mitchy View Post
I am sure you have nothing to worry about.The hubs run warm to hot.As mentioned heat transfer etc.
As long as you used a good quality high temp grease you are good to go.
Thanks, mitchy! That's a relief... it's just one of those things that's not covered in the manual and that you can only learn from experience, or others' advice
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post #8 of 27 (permalink) Old 05-16-2018, 06:02 PM
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Quote:
Originally Posted by allanl View Post
Is 28nM the correct torque for those bolts?
Itís more than stated for my 2nd gen f4.
see post #21 in this thread; http://www.mvagusta.net/forum/13-bru...djustment.html

20nM is what "theknurl" recommends, he is the proclaimed forum curmudgeon...

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post #9 of 27 (permalink) Old 05-16-2018, 08:51 PM
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Quote:
Originally Posted by tokesSV View Post
Thanks, mitchy! That's a relief... it's just one of those things that's not covered in the manual and that you can only learn from experience, or others' advice
You have done well.Ride and enjoy.


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post #10 of 27 (permalink) Old 05-17-2018, 01:59 AM
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Quote:
Originally Posted by mitchy View Post
I am sure you have nothing to worry about.The hubs run warm to hot.As mentioned heat transfer etc.
As long as you used a good quality high temp grease you are good to go.
As mitchy said. I changed mine after the original shit the bed. The new one ran warm to hot, but I was using the rear brake back then. It gets used never to very little now for various reasons, mainly a much better front brake courtesy of a Brembo RCS19 master cylinder. Now it is only warm to touch showing how much heat transfers from the back brake.

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