The bolt tool is a must have item
The manual gives a fairly good description of how to take it down without the tool, but the tool makes it easy. In any event, the M1 rifle is child's play by comparison. Soaking it and using an air hose is ignoring all of the carbon chips and debris behind those small springs. It should be completely stripped and properly cleaned if only to make sure the extractor plunger is put in correctly. Most of these bolts have not been cleaned in, what? 50 years? And that plunger is backwards on a lot of them.