Author Topic: Stupid question: Do I need to drain the oil to pull the transmission cover?  (Read 783 times)

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Offline drumstyx

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Bike is stuck in 5th gear, so I'm figuring it's probably the gearshift linkage being funky, but of course to get at that I have to pull the transmission cover -- Assuming the oil tank is still full (not leaking into the crankcase) can I pull the transmission cover with minimal spillage, or do I have to drain 'er?

Online PeWe

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On a CB750 not. Just lean bike about max 45 degrees to the right  like when removing the alternator cover. I have done it on an engine with leaking oil pump leaving most of the oil in engine, not in oil tank
« Last Edit: October 21, 2017, 12:53:40 pm by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline drumstyx

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Hmm...I wonder how I might stably support it at that angle...

Offline 754

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 Tilt to the same angle as sidestand..block it up by the two bolts under point cover.
About a teaspoon or two of oil will come out no matter how you do it.
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Offline drumstyx

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Put it on the centre stand sideways on my driveway for just a little tilt to the right. Couple teaspoons of oil came out, about what I was hoping for.

The bolt holding the 'stopper' in place came loose and the left side of that spring mechanism came off its holder. That supposed to have loctite or something?

Online PeWe

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I leaned my bike against a wall to remove any of the left side covers with oil inside. As Frank wrote, like the side stand angle is enough.
I had a gear in to avoid bike to roll. In your case I should put something blocking the rear wheel to roll forward-backward.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Jerry Rxman Griffin aka MuthaF'er

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Or put a clean pan underneath and recycle your oil back to the tank.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)