Happijac lubrication
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Forum Discussion
jjinatx wrote:
MTBob,
Thanks for the great info on the jack motors. While I have the motor off the jack,I'll go ahead and check that clutch for any damage.
As for the jack itself, I wire brushed the whole screw thread and coated it with the white grease for GD openers. I ran it in and out a few times, each time wiping off the threads because first time when I backed it out the grease looked tan (rust?). I recoated it once more and ran it in and out. It is well lubed now and I can turn the acme rod with my fingers.
I thought about repainting the inner leg, but the finish is in pretty good shape, so I just waxed it good with Johnson's paste wax.
Be sure to clean and re-grease the gear train in the head. I wouldn't put grease in the ball clutch, just a light coat of machine oil will do. Lubriplate grease is a good choice for the gear head.
HJ tech support suggests not using a grease on the jack threads, but rather use an oil coating. I disagree with that recommendation and used a Stay-Lube Marine grade wheel bearing grease, made by CRC. It's a blue grease, a little thicker than Lubriplate and is designed to repel water. Like you did, I coated the threads and then wiped them so there was only a light coating remaining. Either Stay-Lube or Lubriplate is a good choice for coating the thread.
