Happijac lubrication

Update to my adventures... ended up being able to salvage the jack but what a pain in the buttuchis.

I sprayed a whole bunch of penetrating oil in side the bottom of the jack tubes and let it set overnight. On Sunday, I again tried tapping out the inner tube. it was still very tough but made more progress to where I could remove it.

It seems that a lot of rust particles and debris built up inside and it was this restriction that caused my problems not he internals themselves as described in the OP's posting. I did go through the whole procedure as illustrated, but it was the physical binding of stuff between the tubes causing my restriction.

My advice to folks doing this maintenance is to first try to identify the problem and if it is anything like I describe, then spray penetrating oil prior to any disassembly. I was able to salvage my jack and with a little touch-up paint, it looks pretty good and operates like new.

Oh, another thing- be sure of where all the parts go- I ended up needing to disassemble again because I did not install one bushing in the right order.

Also- in attempting to dislodge the lower jack tube I used a brass drift and a hammer at the top rod. Even though brass is soft, the steel rod at the top by the gears in relatively soft too. I knurled part of it over to the point where i could not install the plastic square pieces back on. I had to take it all apart again to get a file on that square top of the steel rod. I feel as if now I could do maintenance on the other 3 without instructions...LOL

Folks- not that hard of a job if there are no out of the ordinary difficulties like I experienced.