Power Jack

[deadticket8]

Hello everyone. I have a very old power jack on a trailer that is permanent(until I give it away later this year) that is not working. I have power at the inline fuse. Tried jumping it but no go. Can't hear any motor noise at all. Anyone have experience trouble shooting these? I see two phillips screws on the underside of the cap and what looks like a hex head set screw. Would like to avoid getting new jack at this stage of the game.

[deadticket8]

Thanks for the replies. The ground, hmmm... Did not think of that. UPDATE Removed motor and the ground was not tight, that is the ground from the switch. Only accessible inside the motor housing. Cleaned every place the that metal came together and tightened the ground screw. Its working. In the end I think the ground relies on the two hex screws that stabilize the motor housing. Probably should have run a new ground out of the housing to the trailer frame...Well it is working now.

[Bill___Kate]

Check for a good ground. They are usually grounded through one of the mounting screws onto the frame - often with a "star" washer under the flange to help make a good connection. Either take out the mounting bolts and clean up where the mounting flange touches the frame, or run a ground wire directly from a bolt on the motor head to the frame or battery.....

[skipnchar]

Might also try manually cranking the jack to make sure it's not frozen up.

[You_can_t_take_]

Check out the switch and try to bypass it. That would be my first guess. At least it would narrow down the possible problem(s).

[deadticket8]

Yeah right I am not going to put a new power jack on it. BTW what capacity hand crank jack would I need if replacement is neccessary? It is a 31 foot TT no slides. I still want to explore the jack see if something has corroded or otherwise can be fixed. Anyone else out there?

[donn0128]

Probably burned out from sitting way too long. Get a cheap manual jack or simply take it off and place in the garbage and let the next person you give it to figure out how to jack it up. BTW a basic hydraulic jack would be my suggestion.