"Andy" wrote in message
...
On Dec 11, 11:36 am, "HL Falbaum" wrote:

Any serious interest out there?

I could be interested in a seal and gasket kit. Finding the parts
usually takes longer than doing the work.

When my Cobra jack leaked in the first few weeks of use I was sent a
replacement, but it was the wrong type. I swapped the primary
cylinders between the 2 jacks and fixed my problem. Not much else in
there except the secondary piston seal and the ball valve.

Andy

One particular gasket is peculiar. The rest are O-rings.

In addition, there are 3 ball-check valves that can leak-down. Each of these
are in crudely made seats, and the balls themselves are not of the highest
order. The release valve is driven by a crudely made pin which does put the
pressure off center. The actuating screw of the valve is not a good fit in
the casting, being a bit loose.

It is sometimes hard to tell exactly where the leak is, as the oil f lows
"all over".
I have had 4 leaky ramp jacks, with leaks from 2 different places--the small
piston actuated by the lever, and the release valve.

Anyone else located other leaks, or any collapses without leaks to the
outside?


Thanks

Hartley Falbaum
KF USA