Quote:
Originally Posted by Browni
No it's not necessary! The crank doesn't rotate when you pulling in with the tool.
First step you screw the M20 bolt onto the crank by rotating it like a simple nut. After that the bolt is connected to the crank.
When you turn right the nut on the M20 screw you need to dolly the bolt's head with another wrench, so the crank and the bolt is not turning!
Maybe Martin's tool works different way, but my personakl opinion is that one is needlessly complicate. It's also not very good if you rotate it with a lefthanded tool because the crank's thread have an "active role" (radial forces on the thread).
I am NOT saying Martin's tool is bad, it's also great but the other tool protect the crank's thread more!
If you still not understand I will take some photoes.
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The point with leftthread is that it will not unthread from the crank when you pull the crank into the bearing. You also want to pull on the whole thread on the crank. The tool works perfect and it has also been used on a Malossi mhr crank that is alot tighter in the bearing than a Mazza crank. Nad how are you thinking about your tool protecting the crank threads more? this tool uses the whole length of the thread on both sides, it is not possible to protect the threads more than that.