Commando pinion removal.

Hi All, I am proceeding with the engine stripdown on my new project 750 Commando. The pistons are still seized fast in the cylinders but I am dismantling around this. I now have a Haynes manual which says that I need a special tool to remove the crankshaft pinion on the timing side. Does anyone have a picture of this tool so I can make one?

When I removed the oil pump I noticed a small piece of metal lodged in the inlet hole. When I took it out I identified it as a piece of piston ring! That would explain the siezed engine.
Thanks in advance for any help.
Geoff

You can try carefully tapping the end of the crankshaft with a solid block of wood. I have managed to remove a few this way without hurtung anything or buying the tool.

If the timing pinion is "seized" like your pistons are, I guess you may need the tool though. But if it has had oil in the pinion area, you may be able to give it a tap with a block of wood to free it.

Been there, done that.

Best advice: Don't forget to use some heat. Fire is your friend here.

mrmosky,
There's a drawing of the tool on the Old Britts site. http://www.oldbritts.com/ob_start.html. Go to "Our Products" then "Accessories" then "Tools" then "Timing Pinion Extractor".

They are relatively abundant and if you are working on many Norton twins it's a good investment. It makes pulling the pinion a snap.