The easiest method of disassembling or reassembling the M1 bolt, is to do it while it's in the rifle.
To do this, use either the M3-A1 Combination tool, or the M10 cleaning rod handle/tool.
Simply open the bolt and insert the brush end of the M3-A1 combination tool into the chamber, OR attach a cleaning rod section to the M10 tool and insert the screwdriver end into the chamber.
On the M3-A1 tool there's a semi-circular cut on the rear of the section that holds the brush and that side should be up, with the tool to the right side of the rifle.
With the M10 cleaning rod handle/tool put the tool in the chamber with the attached cleaning rod section pointing to the right.
Ease the bolt forward, then push it forward against spring pressure.
Lift the handle or cleaning rod and the extractor will be pushed up out of the bolt.
Remove it, then ease the bolt back and remove the ejector and spring.
The firing pin will fall out the back of the bolt.
To reassemble, insert the firing pin and ejector and spring into the bolt.
With the M3-A1 or M10 tool in the chamber, ease the bolt forward, then push it forward against the spring pressure of the ejector.
Insert the extractor and press it into position.
This is far easier than attempting disassembly and reassembly with the bolt out of the rifle.