This group has been very helpful to me. Folks like Mike Kelly, Mike
Callison, Bob Dunn, Jamie Treat, the Denest family, Richard Smith, Steve
Dennis and many others I can?t think of right now.
Bill the PT is flying and running great. Knock on wood???
Ihope yours is doing well. Hopefully some time I will be able to fly up to
one of your WASP Fly-Ins. That would be fun. Please keep me posted on
dates.
Jack
Jack Threadgill
1602 Brook Hollow Dr
Bryan, TX 77802
979-779-7155
threadgl@suddenlink.net
-----Original Message-----
From: fairchildclub@yahoogroups.com [mailto:fairchildclub@yahoogroups.com]
On Behalf Of Bill Johnson
Sent: Tuesday, November 10, 2009 3:18 PM
To: fairchildclub@yahoogroups.com
Subject: RE: [fairchildclub]Oil pressure & relief valve was: Re: Ranger 440
engine testing & rebuild
Jack,
That kind of information is both extremely helpful and very much
appreciated.
Thank you very much for your help. I would like to think I might return the
favor one day, but you are way ahead of me.
I trust you are enjoying your PT. It's a beauty.
Bill Johnson
From: fairchildclub@
yahoogroups.com [mailto:fairchildclub@
yahoogroups.com] On Behalf Of Jack
Threadgill
Sent: Tuesday, November 10, 2009 2:38 PM
To: fairchildclub@ yahoogroups.com
Subject: RE: [fairchildclub]Oil pressure & relief valve was: Re: Ranger 440
engine testing & rebuild
I don't know many of the folks that own or fly aircraft with Ranger engines
nor do I know how long they have been operating the engines. I suspect
there are some that have yet to assemble complete sets of instructions and
manuals. Many tasks are very simple and easy once they have been done.
I found in the L-440-1 and -3 Operating Instructions dated 1942 that the
normal operating Max oil pressure is 70 psi and Min is 50 psi with a desired
pressure of 60 psi. The Min idle pressure is 15 psi.
I have not found any oil pressure adjustment instructions in the Service
Instructions for the L-440-1, -3 and -5, nor in the Overhaul Instructions.
I would like to thank Mike Danielle that sent me the following simple
instructions of setting the oil pressure on the Ranger engines.
There's a large, elongated cap (like an acorn nut) located on an angle just
beside the oil screen cover on the top right rear of the engine. Should be
safety-wired. Remove the cap and you will see its threaded base is a
slotted screw. This is the oil pressure relief valve adjustment. Screw it
in and the oil pressure will increase, screw it out and the pressure will
decrease.
I adjust mine to show about 55psi at cruise rpm with the oil warmed up.
When cold, the pressure might be as much as 65psi but it comes down within a
few minutes as the oil warms up.
Maybe this will be helpful to other new guys like me to Ranger ownership.
Thanks Mike Danielle for your understanding and help. It is quite simple
once one has done it.
Best wishes,
Jack
Jack Threadgill
1602 Brook Hollow Dr
Bryan, TX 77802
979-779-7155
threadgl@suddenlink .net
-----Original Message-----
From: fairchildclub@
yahoogroups.com
[mailto:fairchildclub@
yahoogroups.com ]
On Behalf Of Michael Denest
Sent: Tuesday, November 10, 2009 11:28 AM
To: fairchildclub@ yahoogroups.com
Subject: Re: [fairchildclub]Oil pressure & relief valve was: Re: Ranger 440
engine testing & rebuild
Setting oil pressure is a very simple operation. Detailed instructions can
be found in the Ranger maintenance manual. The maximum and minimum oil
pressures are found in the table of limits in the appendix at the back of
the book.
READ THE BOOK GUYS!!!
Mike
"He's crazy Lew, he builds toy airplanes".
- Capt. Frank Towns
Flight of the Phoenix
________________________________
From: Airy Millet
To: fairchildlist
Sent: Tue, November 10, 2009 11:15:09 AM
Subject: RE: [fairchildclub]Oil pressure & relief valve was: Re: Ranger 440
engine testing & rebuild
simply an helicoidal spring pushing the valve on its seat!
adjustable by screwing or unscrewing...
By the way, does anybody knows the "k" constant of this spring (or
load/length ratio)...
Maybe in order to rebuild brand new ones...
Airy
To: fairchildclub@ yahoogroups.com
From: bjohnson@tnbnetbank .com
Date: Tue, 10 Nov 2009 09:09:41 -0600
Subject: RE: [fairchildclub] Re: Ranger 440 engine testing & rebuild
Mike:
OK, I'll ask. How does the oil pressure relief valve work, and how do
you adjust it?
Bill
From: fairchildclub@
yahoogroups.com
[mailto:fairchildclub@
yahoogroups.com] On Behalf Of docarnie
Sent: Tuesday, November 10, 2009 8:45 AM
To: fairchildclub@ yahoogroups.com
Subject: [fairchildclub] Re: Ranger 440 engine testing & rebuild
Dear Mike,
I have to confess that I am only one of the pilots. I try not to do
anything that would make the crew chief or the mechanic mad at me,
especially if it was a preventable issue, i.e. like flying with low oil
pressure at normal operating temperature. I will ask our mechanic about
the oil pressure relief valve.
Thank you for the tip,
Arnie
--- In fairchildclub@
yahoogroups.com
, "Mike Danielle"
wrote:
normal.>
> My Ranger will lose some pressure after the oil warms up. That's
warm.> Just set the pressure to the normal operating range while the oil is
You> High oil pressure doesn't hurt anything while the engine is warming.
pressure,> know how the pressure relief valve works and how to adjust the oil
> right?
>
> Ranger Mike
>
> ----- Original Message -----
> From: "docarnie"
> To:engines.> Sent: Sunday, November 08, 2009 5:48 PM
> Subject: [fairchildclub] Ranger 440 engine testing & rebuild
>
>
> > Can anyone help me with a problem with a couple of Ranger 440years> > Both have been rebuilt, one was rebuilt this past year the other 8was> > ago and was brought out of storage to be installed in a PT-19 whichissue> > recently finished by the Spirit of Tulsa (OK) Wing of the CAF. Theoperating> > is that both engines loose oil pressure once they are up toneed> > temperature. The oil pressure falls to between 40 & 45 psi. If youthis> > more details I will refer you to the A&P's who are trying to solveus> > problem.
> >
> > Does any member of this forum know of an engine shop that can help[Non-text portions of this message have been removed]> > figure this problem out?
> >
> > Thank you in advance,
> >
> > Arnie Angelici
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
>
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