Happijac repair

It hadn't occurred to me that it might be binding because it was bent, as Joe417 suggested. I checked, and it might be, but less than 1/8". I put a shackle across the top, with threaded rod thru the holes, chain thru the shackle and a second chain on the foot, then a come-along winch going to a tree. After a little persuasion to get it started it came out easily. Inside is a stiff black mess of grease, dirt, water and rust. So now the cleaning and refurbishing can be done. TM...

I bought brand new ones and just put them on my camper. See: "what did you do to your camper lately?" thread.

if you were close by, i would give you all 4 of the old ones if you have the same model. Mine were starting to bind and rather than rebuild, I upgraded to the newer version leg. Cost about $1,000 plus shipping. With proper maintenance (which previous owner did not do well), they should last forever.

I got my Happijac parts on Ebay.

I hope you are able to get them apart. You might want to put a straight edge on the post to verify you don't have a bent jack issue. I couldn't see my bent jack just looking at it.

I had a similar issue a couple years ago. I did get it apart but my issue was that leg was slightly bent, less than 1/8" in the full length.

I had a harder time getting it back together as the lead screw was not centered in the tube due to the slight bend. I got it back together with new grease and since my problem wasn't rust, it was still a bit stiff.

This past year it got a bit worse to the point the motor would blow the fuse. I found that both right side jacks are now bent. Since I haven't bumped the camper while loading, I am assuming that at 1900# each, the 4500s aren't heavy duty enough for the camper.

Since Happijac jacks are over $300 each and the old ones hand crank easily I'm not wasting money with a replacement jack.

I'm going to do it manually until I can replace all 4 with a set of the 4800s or a set of Reico's.