2. The joy was short-lived because it
was only a one minute run while I had the redrive drain line
disconnected. Taking the drain line off gave the first clue. No sign
that a drop of oil had ever been there. The amount of oil in the
container after the run – zippo; not a drop. I took off the feed
line and there was oil sitting in the fitting. Feeding to a container, I
ran again for less than 30 seconds, and sent more than a pint into the
container. Complete blockage inside the drive. The prospect of
removing the prop, drive and disassembly is not a happy one.
Al,
something you might try before taking the gearbox off (a pain to say the
least). Its been know for such stuff as the silicon grey sealant to plug
up the drains. Yes, unlikely that it would have plugged up the front
one. But, short of taking off the gear box you might try removing the
drain fittings - just in the remote chance they could be plugged.
Ed
With two exits
and 100 psi oil; my guess is it’s highly unlikely that the explanation is
‘foreign matter’. I think there is no oil going into the
drive. It appears to me from the diagram that the oil goes in through a
bushing via a hole and/or groove. Most likely a misalignment there giving
the oil nowhere to go. I’ll check further later today.
Al