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