Are these Lippert Electric Stab Jacks?
Can you move them manually with the jack handle?
My Lippert motors once got water in them and completely froze up. I couldn't move them manually or with the motor. Normally though, I can manually tighten them up as long as the motor is not forzen.
Maybe if you haven't used them in a while, they have "frozen up" for some other reason. Rust?
Maybe that's why you can't get the motor off?
2014 ORV Timber Ridge 240RKS,8500#,1250# tongue,44K miles
690W Rooftop + 340W Portable Solar,4 GC2s,215Ah@24V
2016 Ram 2500 4x4 RgCab CTD,2507# payload,10.8 mpgUS tow