I had a slide not moving, last year. It would not turn after releasing the motor, and it turned out to be a loose needle bearing in the motor gear box. The motor was likely okay, although I changed both together from a surplus place in CA. I would not want to have to go through what it would take to run my slide in by hand. I would have to turn the square transfer rod with an adjustable wrench after I had taken off the access panel underneath and sat on the ground (which I would hope was not muddy at the time, or in a creek!) You can attach cables directly from the motor to a known good battery but try to leave enough cable to reattach after repair. hth david