# gearbox removal on 312r - MVAgusta.net
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Old 01-09-2013, 01:12 PM   #1
chay250
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Default gearbox removal on 312r

just put my bike back together after fixing oil leaks(or so i thought)only to find my worst fears realised - there is another leak and it is definitley coming from the gearbox - it is the joint where the 6 bolts fasten the gearbox to the motor - i have a new rubber gasket ready to fit and have drained the oil and coolant removed the water pump.right hand case and clutch plates - that is as far as i can go at the moment as i do not have a clutch holding tool - has anyone in the uk got one i could borrow?
is there any pittfalls i should be looking for when i remove the gearbox - looking at the manual it states the bike must be in gear prior to removing the gear box dose it matter which one?also when removing the clutch plates there are two large washers at the back of the clutch boss one is flat and the other appears to be concave can anyone confirm which way round they go - i think the flat one goes on first and then the concave one but which way?
has anyone else had a leak from this area of the bike? - my bike has done more than it's fair share of dyno work and i can only think this is the cause.
cheers colin
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Old 01-09-2013, 07:38 PM   #2
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Default Hi Colin

Oil leak in that area is not very common as far as I know.
Any gear is fine.
Where are the 2 washers located, I don't recall ever seeing 2 washers in the same spot. Have you had a good look at the engine manual?
I never use a clutch basket tool, too expensive, just hold the basket by hand with a good leather glove.
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Old 01-10-2013, 04:01 AM   #3
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sorry mate didn't look properly - it is shown on the diagram on your post (circled)which way they go - i was referring to the couple of large rings that go in before the plates.
cheers colin
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Old 01-10-2013, 04:20 AM   #4
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Quote:
Originally Posted by chay250 View Post
sorry mate didn't look properly - it is shown on the diagram on your post (circled)which way they go - i was referring to the couple of large rings that go in before the plates.
cheers colin
No stress Colin, I had to scratch the head as I use the STM slipper clutch now, and we don't use them big washers anymore. Good luck, hope you get sorted.
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Old 01-10-2013, 08:06 AM   #5
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you don't need a tool to hold the clutch. Get an air gun. It will take the nut off quickly
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Old 01-10-2013, 12:24 PM   #6
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Wink ?

Colin;
put it in any gear to remove the transmission, its to protect the neutral switch

when removing the clutch hub nut have the transmission in neutral, same as with the countershaft nut!
leave the clutch pack in....with a leather glove on press on the plates with the side of your left thumb and use an air impact
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Old 01-10-2013, 02:27 PM   #7
chay250
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thanks for the help guys - will let you know how it goes.
cheers colin
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Old 01-10-2013, 05:12 PM   #8
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Oh Man no wonder my tranny doesn't work anymore. Had it in gear when using the air impact
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Old 01-11-2013, 10:08 PM   #9
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Any chance of a step by step for gearbox cassette removal from one of the "Brains trust" have seen that Donsy has good knowledge , pretty sure I have bent selector or broken spring !
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Old 01-11-2013, 10:54 PM   #10
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I will do a gearbox removal this weekend, will take some pictures and post it next week if you can wait Chris.
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