Help Getting the Rotor Off

[hotsos]

This thing is rusty probably, and I don't want to wreck it by cranking the crap out of it.
How do i loosen it up??? I sprayed WD40 all over it, is it a long bolt that goes into the engine, or is it a nut on the end of a rod?

This is on a '80 CB750K

 

[anarki650]

If it's the same as the 81 CB750C I changed the rotor on for my friend it is a long(ish) bolt that goes through the rotor into the end of the crank. It'll be WAY easier to get off with an air impact. I couldn't get his by hand, even with a 15" breaker bar, the crank kept spinning behind the bolt so I could never get enough torque on it.

 

[hotsos]

Sounds good, that leads me to my next obvious question.

Anyone got an impact wrench in TO ??

 

[hotsos]

OK, I got the bolt off, the impact wrench was the ticket for that.

Now I need a bolt to get the rotor off of the shaft. Any one got one?

it is 1.5 x 18mm

its also called a rotor puller,
I heard that the bolt may be used on the bike somewhere, but i cant see one that may be the right size.

 

[anarki650]

On my kz the rear axle is the right size/thread, not sure about on the cb though. My buddy bought a flywheel puller (which is just a high grade 1.5x18mm bolt) when I did it for him.

 

[anarki650]

Also, not sure if you know this already or not, but when you go to pull the rotor you don't need all kinds of torque on the bolt. Thread it in good and snug and beat the shit out of the bolt with a dead blow hammer. Hit it straight on the bolt head a couple times and it'll pop right off.

 

[hotsos]

thanks. I knew that the rear axle would fit, but I would have the take the pipes off to get the rear axle off, and I think there is way to much chance of causing more problems.

Ill just go and get a bolt at Brafasco I guess.