Happijac motor drive
I have a Bigfoot with Happijacs. One of them keeps blowing the fuse. The jack moves freely when manually cranking the jack. Do any of you know if all the jacks use the same drive motor assembly? I hav...
Forum Discussion
RamTC wrote:
All the motors are the same and it's almost always the bottom bearing that falls apart. If you're handy, you can replace the top and bottom bearing and the whole drive assy is as good as new for less than $10. As soon as these motors give off the sound of nuts in a blender, it's the bearings.
An update: The wiring was fine, and I plugged in a drive from a different jack at that location. It ran fine. I decided to take the assembly apart to see just what was wrong. The motor was stuck and wouldn't turn by hand. A good nudge on the output shaft and it started running fine without the "nuts in a blender" noise. I ran it for quite some time forward and reverse. I then put the drive and gears back together. That assembly then was run in both directions and it seems fine. I didn't take the motor apart, but I'll bet the bearings are on their last legs even if they aren't noisy.....yet. I know I am likely on borrowed time, but perhaps not. I'll probably get a spare for "in case". Thanks for all the tips and suggestions. This is a great forum with helpful people!
