Air in Hydraulic Fluid

[SkyMac]

Hi Rick

We had some issues when checking my electric power pack, one of the manifolds was not sealing correctly to the pump housing when they initially tested the pump (bench testing) to check functionality, I believe they said air was entering the system.

What they found on disassembly was the O ring seal was being distorted by what looked like a deformation to the manifold housing, this rendered this part unserviceable. The power pack was overhauled a few years before I purchased the aircraft, we believe the damage was done during this time.

Don Neiser was able to supply another manifold, pump was fully overhauled and bench tested in the rig, functioning correctly. Also replaced all flexible lines and rebuilt every actuator and down lock at the same time ensuring the system was in best possible conditions.

Dave

Ps: The aircraft I purchased was not airworthy and had not been flown for three years.