I know of at least two instances where the
“goesa inna” and “goesa Outta” hose fitting to a remote
oil filter were reversed. In one case, the oil pressure apparently burst
the rubber diaphragm and the engine eventually got oil flow.
In my case, when I first cranked my
old 86 13B on a test stand that was a mockup of my firewall (including
remote mounted filter) I had no oil pressure. When I checked there was no
oil on the downside of the filter. I discovered I had reversed
the oil routes into/out of the remote filter. I had thought the oil went
into the center of the oil filter and out through the sides, but discovered it
was just the opposite as shown in the drawing below. It was pretty easy
to check, removed the hose going to the filter and plenty of oil came out –
but none past the filter – ergo – swap “goesa inna and goesa
outta” hoses and problem was cured.
.
Ed
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of The Mallorys
Sent: Wednesday, February 25, 2009
11:00 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] First start
She’s
alive!
I
had my first start today. She sounded good, but the oil stayed at 3-4
PSI, so I shut her down. I opened the line from the oil cooler to filter
to see if I was pumping anything. There was a little oil there, it
didn’t gush out, but it was there.
So
now I have to figure out why I don’t have pressure. I’m open
to any ideas or suggestions.
Chris
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