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Aztec hydraulic leak Parking brake valve

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Coopere

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Seems my Aztec is mad at me for not flying it in the past 28 days... due to finishing off my instructor rating...

Fluid after a flight last week found running from the belly seam (forward seam of the removable belly pan) Clean ish fluid on the pilots side however their is a much older contaminated streak on the co-pilots side as well

the clean ish fluid is 5606 for sure, the other is more yellow than red but has a slight red tinge... I did have the airplane corrosion x'ed a month ago on my last flight so I believe the yellow / red fluid is simply fluid that has migrated over and mixed with the corrosion x

did some looking around today with my scope, and the parking brake valve has a rather large clean droplet of 5606 on the bottom aft fitting and the valve itself is oily so I suspect it has been leaking for some time

is there any other places I should be looking to find leaks in this area?

I took a good look at the nose gear actuator, all gear fittings to the front of the cabin firewall, gear priority valve, co2 shuttle valve and gear door actuators none of these components show signs of leaking

also looked in the cabin at the tops of the brake master cylinders no leaks observed but due to the carpet and floor I can't see whats down under the floor

thanks
Eric
 

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