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How to separate crankcase?

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palbradley

How to separate crankcase?

I have a 79 cb750K and I am rebuilding the engine. I need to separate the crakcase. All bolts removed, but the two case halves are semi stuck. They are completely apart except for the area near the generator motor. This area will separate only about 1/4 inch, but that is it. The rest of the crankcase will pull apart. Any ideas of why this area is stuck, and how to separate it?

Franco

Re: How to separate crankcase?

Did you (or anyone) ever figure out how to solve this? I'm experiencing the same problem.

TOOLS1

Re: How to separate crankcase?

Administrator

I think, you need to remove the rotor.
TOOLS

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LukeM

Re: How to separate crankcase?

Administrator

Agreed. You may need a Honda removal tool to get the rotor off of the crankshaft. That + some PB blaster.

Luke M

Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.

Peterwh

Re: How to separate crankcase?

Being a 79, I tKe it this is a DOHC. I split my 74 SOHC without removing the rotor, no problem. Are you sure you have all the screws out? If I remember correctly, it's easy to miss a couple.

Lucky 1

Re: How to separate crankcase?

In reply to this post by palbradley

What you need is a workshop manual. Turn off your computer.

You need accurate instructions and photos .

On a Roadstar Adventure.

Re-run

Re: How to separate crankcase?

Administrator

If he turned off his computer, he couldn't get the manual. Which can then be printed out as he needs things.

Palbrad, the cases can get stuck together. once you verify you have everything removed that is required, some taps on a block of wood with a mallet can loosen things up.

The ride IS the adventure. The destination is just to get gas!