Thanks Mike,

We thought about replacing the switch with a manual switch to test with but
I did not want to stress the lines or acutators to 3000 psi where the
internal pump relief opens. The idea about placing a light across the
external pressure switch is a good one though. If the light comes on when
the gear stops going up for that 1/4 second we will then know it is due to
the pressure switch opening up and not some other electrical problem. I
guess if we determine the switch is opening up we will also have to try a
get a high pressure gauge and see if we can read it fast enough while the
cycling is going on to determine if the switch is opening up prematurly. I
received other documentation on the switch this morning that says that the
working range is only 200 - 400 psi (open at 1800 psi, close at 1400 -
1600 - much tighter than I thought the maintenance manual indicated closing
at 200 - 400 psi. This makes me even more learly of the switch.

- George
"Michael Ware" wrote in message
m...
Well George, I don't know the first thing about your plane, but it seems a
straightforward way of troubleshooting the symptoms would be to place a
manually operated switch in the circuit in place of the hydraulic pressure
switch.
Another way to rule it in/out would be to put a test light on the load
side
of the switch, see if it goes on/off when the pump does. Also, do you have
a
way to monitor the hydraulic pressure while this is taking place? Perhaps
there is a partial blockage or other problem in the lines or in the
hydraulic actuators, causing the pressure to shoot up.

--
Hello, my name is Mike, and I am an airplane addict...

"Yahoo! News" wrote in message
t...
During day one of my 2000 Saratoga's annual today my mechanic and I
observed
the following problem. If anyone has some experience with this or they
have
a mechanic that has experience with this I would love to hear about it:

snip

Again if anyone has some insights on my gear retract symptoms I would
sure
like to hear about it. If you believe our theory about the pressure
limit
switch being bad is unlikely and that it would be wiser to go down
another
path I would also like to hear about that too. My mechanic and I will be
all over this tomorrow so if you know anything about this post what you
know.

- George