F4 R312 Gearbox whining - MVAgusta.net
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post #1 of 24 (permalink) Old 11-06-2013, 07:54 PM Thread Starter
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F4 R312 Gearbox whining

Hi,
After a couple of days of very hard riding particularly in lower gears today my gearbox is whining, only noticeably in 1st and 2nd. Is this normal and just the sign of bike that has travelled ~30,000km aging gracefully, or is it likely to be a precursor to spending a lot of money in the near future?

Thanks
Jeremy

Last edited by vivere; 11-06-2013 at 07:56 PM. Reason: Bloody Word...
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post #2 of 24 (permalink) Old 11-06-2013, 09:53 PM
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Hi,
After a couple of days of very hard riding particularly in lower gears today my gearbox is whining, only noticeably in 1st and 2nd. Is this normal and just the sign of bike that has traveled ~30,000km aging gracefully, or is it likely to be a precursor to spending a lot of money in the near future?

Thanks
Jeremy
look in the engine manual....
on the main shaft 1st is part of the shaft, 2nd rides on a bearing

on the counter shaft they both ride on bearings, because they are on opposite ends of the shafts I'd vote counter shaft bearings

drain your oil......see a bunch of stuff on the magnet?

buy a complete transmission for ~$275....

the main shaft is $1,000+ gears are ~$250-$500 each, then you need bearings and shims

just check the case bearings when you pull the transmission

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post #3 of 24 (permalink) Old 11-06-2013, 11:36 PM Thread Starter
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Thanks for the reply Noel. Not quite the answer I was after though.

Planning on doing an oil change on the weekend..
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post #4 of 24 (permalink) Old 11-07-2013, 08:06 AM
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Perhaps this was the answer you were seeking?

http://www.youtube.com/watch?v=d-diB65scQU

Actually, I would change the oil looking for tell-tales as Noel has suggested.

Fill 'er back up with a quality synthetic and see what's-what.

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post #5 of 24 (permalink) Old 11-07-2013, 08:18 AM
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Quote:
Originally Posted by silentservice703 View Post
Perhaps this was the answer you were seeking?

http://www.youtube.com/watch?v=d-diB65scQU

Actually, I would change the oil looking for tell-tales as Noel has suggested.

Fill 'er back up with a quality synthetic and see what's-what.
lmfao, good one Chuck.

In all honesty, the bearings on these gearboxes are sooo friggin easy to replace, and not that expensive.
As Noel mentioned though, you can buy them second hand at good cost, just be sure to get the right parts for your model.

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post #6 of 24 (permalink) Old 11-07-2013, 03:35 PM Thread Starter
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Thanks Chuck, for some reason I feel much better now..

I will change the oil and assess from there.

I have had the bike since new and it has always had a top quality full synthetic.. I know it isn't a Honda, however I would expect to get more than 30,000km out of a gerbox..
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post #7 of 24 (permalink) Old 11-07-2013, 03:51 PM
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Those gearboxes are pretty tough.

Don't worry, be happy!

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post #8 of 24 (permalink) Old 11-07-2013, 10:23 PM
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however I would expect to get more than 30,000km out of a gearbox..
not if its an old Austin-Healey

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post #9 of 24 (permalink) Old 11-18-2013, 11:27 PM Thread Starter
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Drained the oil today and apart from the usual "fir" on the magnet all looks OK so fingers crossed no significant damage...
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post #10 of 24 (permalink) Old 11-19-2013, 01:49 AM
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Did you see the links I posted for you on your other thread about the return spring.

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