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Hi
Matt,
Why do you think that you don't have an internal
leak in a cylinder? I had a similar problem a few years ago and it turned out to
be a very small scratch in one of the cylinder walls. In the down position, the
seals were over the scratch and allowed a minute leak. In the up position the
seals were over smooth wall and worked perfectly. It doesn't take much, the
smallest leak will cause this problem.
My suggestion is to get a bunch of caps and plugs
and isolate cylinders one at a time. You can also cap the lines going to the
dump valve to isolate it. It's an easy (if a little messy) way to find out
for sure where the leak is. Be sure to stock up on paper towels and rags before
beginning this operation :-) Let us know what you find out.
Bill Harrelson
N5ZQ 320 1,400 hrs
N6ZQ IV under construction
My hydraulic pump turns on when the gear is down at regular intervals
about every minute and it stays on for about 1 second.
It does not do this when the gear is up.
I don't think there is an internal leak in the cylinders.
I do have the original crappy ball emergency dump valve which I do
suspect.
Anyone else have any ideas?
Thanks.
Matt
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