Today's Message Index:
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1. 08:21 PM - Pushrod Oil Leak (Gary Strong)
2. 08:29 PM - Re: Pushrod Oil Leak (BobsV35B@aol.com)
Message 1
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| Subject: | Pushrod Oil Leak |
--> Beech-List message posted by: "Gary Strong" <gjstrong@comcast.net>
I have a 1979 V35B with the IO520 engine with about 800 hrs on a factory
rebuild. I have been leaking oil out of the pushrod tubes right around
where the springs and rubber gasket/washer meet at the crankcase. Not
tons of oil, but definitely enough to make the cowling & belly oily. At
the annual a few weeks ago we replaced all the seals with Real Gasket
Pushrod seals w/ tapered springs (supposedly the best seals out there).
Bottom line is I still see some oil leakage, while definitely less than
was there previously. I've only owned the aircraft 2 years so I don't
know if its always been this way since rebuild. I heard that possibly
the oil fill cap/seal could be bad and cause some case pressure so I
replaced that as well with no result.
My question - Are oil leaks around the seals/springs common on the
IO520? It is fixable or something I have to live with? What's the
"normal" amount?
Thanks!
Gary
N77QQ - Minneapolis
Message 2
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| Subject: | Re: Pushrod Oil Leak |
--> Beech-List message posted by: BobsV35B@aol.com
In a message dated 2/21/04 10:21:46 PM Central Standard Time,
gjstrong@comcast.net writes:
My question - Are oil leaks around the seals/springs common on the
IO520? It is fixable or something I have to live with? What's the
"normal" amount?
Good Evening Gary,
They should not be leaking.
However, they can be a bear to get properly installed. Like any seal, they
need to be installed carefully.
I am not familiar with the tapered ones you are talking about, but most
engines have little or no problem with normal push rod seals
Happy Skies,
Old Bob
AKA
Bob Siegfried
Ancient Aviator
Stearman N3977A
Brookeridge Airpark LL22
Downers Grove, IL 60516
630 985-8502
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