Would someone be able to send to me (scanned and e-mailed for instance) the instructions for disassembling a Model 70 bolt? For some reason today my Model 70 won't stay cocked when closing the bolt, and the safety is stuck on "Fire". I think something is stuck inside there. Hope I don't need some special tool.

It is not a problem with the safety, It is probably the cocking piece. The firing pin is moving forward, past the camming surface on the safety lever and cocking piece area.

Right on, you can't engage the safety if the firing pin is forward of it's notch. Sounds more like a trigger problem. Before I would pull the bolt down, I would pull the action from the stock and look the trigger assembly over to make sure nothing was jammed, broken or missing.

If you lift the bolt handle just a bit and the safety moves you'll confirm the diagnosis.

Problem is solved. It was just a single small stick of powder (Vectan Tubal 7000 to be precise) stuck between some parts in the trigger. How it got there I can only guess. So it was only a cleaning job.