Service query, rear hub - MVAgusta.net
 
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post #1 of 8 (permalink) Old 02-17-2014, 05:58 PM Thread Starter
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Service query, rear hub

So recently I have had a major service on my bike, and asked for the rear hub to be looked at.
The last place I took it too, said it was starting to rust/fuse and that it should probably be replaced at next service. They greased/lubed it up real good and reassembled it.
A few months pass with riding in all seasons and weather and about 6,000km..

So I've taken it to another shop, and asked it to be looked at. I know it's condition is not great, but the current shop hasn't mentioned anything about it, even though I asked for it to be looked at.
The few times I've rung and asked what condition I was in, I'm told "mechanic that worked on it is not here". I've asked for calls back and never get one. I pick it up in the next few days but I'm wondering how should I approach this?

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post #2 of 8 (permalink) Old 02-17-2014, 07:16 PM
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Check through the "maint" section mate, lots of info on the hubs. Not sure what the first dealer meant about rust, it's alloy and can't rust, if the bearings where rusty, they'd have given up by now.

If I was you, I'd buy a new bearing, and find someone that can and will replace it for you, someone a bit smarter than the one's you've been to already. The manual suggests when the bearing should be replaced, I'll go with that for sure. Only replace the problematic bearing, and just service the other bearing.

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post #3 of 8 (permalink) Old 02-17-2014, 08:15 PM
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Ben,

if you can ride or trailer the bike to me up near Peats Ridge I'll show you how to pull the hub out and check it.

Cheers
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post #4 of 8 (permalink) Old 02-17-2014, 08:15 PM Thread Starter
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Cheers Donsy.

Hopefully u can find the manual on my PC when I get home..

And intrigued by your rust comment.
The previous place said they had to hammer it out as it had fused (to something, I'm nt sure)..

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post #5 of 8 (permalink) Old 02-18-2014, 03:25 AM Thread Starter
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Hey Rsawkins I may just do that.

I'm getting her thursday. going for a blat that day. hopefully sometime in the future I can ride up and you can teach me how to service these babys

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post #6 of 8 (permalink) Old 02-18-2014, 04:10 AM
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Quote:
Originally Posted by b3nje909 View Post
teach me how to service these babys
Now that is great news Ben, I remember you telling me " I just ride them, don't work on them" a couple of months ago. You'll enjoy it mate, even more when you see how much money you can save yourself. Pretty sure the good man Richard will sort you out just fine.

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post #7 of 8 (permalink) Old 02-18-2014, 05:39 AM
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Quote:
Originally Posted by b3nje909 View Post
And intrigued by your rust comment.
The previous place said they had to hammer it out as it had fused (to something, I'm nt sure)..
Not unusual to have to give the axle a good whack with a piece of wood board and mallet to get it out....especially the first time.

I had to do that on my 910R, but there wasn't anything wrong with the hub or axle. Just stuck.

Service routinely and enjoy life.

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post #8 of 8 (permalink) Old 02-18-2014, 10:45 PM
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Wink ?

Ben;
the axle and inner race of the 3810-2RS rust together because of too high a torque value makes the bearing get hot, forcing air from the hub.....

as it cools, it draws moist air (evening/night) causing the rust

the Factory spec'd torque (28-32Nm) is too high for the bearing

lots of people that have never ridden in rain or washed their bikes had the problem

I measured the bearing distortion at different torque levels.....the inner race starts collapsing at under 28Nm, measure it, I posted it

I recommend 15lbft/20Nm

I've had bikes fresh from an MV shop with the pinch bolts at over 80lbft/108Nm

I've sold over 300, 3810-2RS bearings and precisely 1 needle bearing......the grease seal was cut and the bearing was dry

not much to service in the hub......and absolutely no reason to replace it at 22,500mi like it says in the service manual

Mitch Hubs come with an O-ring to seal the bearing to the axle......I use them and drill a vent hole on the bottom of mine

Noel-theknurl

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