How can I unscrew the central axis from my vacuum cleaner's motor. It appears it is sealed with some sort of green substance and it doesn't move at all. I already tried dissolving it with acetone and WD-40 and had no luck. Thank you.
Heat is a common method to make threadlockers let go - some specifically require it. Odds are excellent that it's Loctite Green or a knock-off of that. That specifically mentions "heat and hand tools" implying that it should not need high impact to remove once you heat it up.