Ed Writes:

>This is important because what happens in summer is that the fluid
leaks across into the low pressure side, the pump for some reason does
not allow this pressure to vent to the reservoir.  Then, while you taxi
to the active, the system heats up causing pressure in both circuits to
rise together.  If this pressure rises to 800 psi, the switches will not
allow you to raise the landing gear and actuating the dump valve will
have no effect.  You will be stuck until you land and crack the system
to let pressure out.  I know because it has happened to me several times
until I started pulling the breaker on the ground.  With overhauled
cylinders, it's no longer a threat.

Thanks Ed.  That was an absolute Gold Nugget of clarification.  I had
this happen a couple times and wasn't sure why / how I had "fixed" the
lockup.

Larry Henney
N360LH LNC2 IO-360 B1
16XS  Ft Worth, TX