Happijac Motor Repair 

Thank you for digging into this. My first not-so-Happi-jac 4160 quit working at two years old, but luckily, Amazon still had one available. Now, the second 4160 on my 2018 Bigfoot camper has failed, and now I can't find this discontinued motor. Needless to say, I'm not pleased at all with Happijac, but thanks to your video, I may try fixing mine.

I also have a lance RV. One of the jacks didn’t work. I sent it to the manufacturer for repairs and didn’t test it, so I changed it for $1,000. I took the replaced motor back, disassembled and cleaned it according to your method, and it was fine. I saw it earlier. You could save $1,000 on your video. Thanks for more good content!

To get the motor out of white housing I’ve been told putting 90 psi to the small hole in bottom pushes out the motor

A rubber tip air hose and put it on the bottom little hole and push button and air will blow the white cover right off .

Put a plastic bag over the top of Jack and a zip tie when stored and bag needs to be put on lose so air can go in and out and not sweat.

Great vid. Many thanks. This really helped me sort my jack motors.

Just a little hasty taking the outer casing off. I just did mine and it had a rusty armature and stator as well, nothing is un-fixable! If man built it man can repair it.

Enjoyed the video. Our bed won't go down so you have suggestions what to trouble shoot first, we replaced the switch but no dice.

Nice job!

Forgot to say.... The hole in the bottom of the white case was blocked on mine, I now put a cocktail stick into it every once in a while to get any moisture (condensation?) out. Once again many thanks.

Good job!!!!!