Oil leaks

Service and maintenance tips, questions, and issues.

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Re: Oil leaks

Postby bryancobb » Tue Jan 01, 2013 7:20 pm

I remember seeing the oil return lines like yours in the Engine Books I bought from Textron. Mine was like the newer revisions the latest engines the factory bought for their last few ships built.

Harold Jenkins had converted my engine to an IVO from an IO, in the late 1960's. I can only assume that he used the current setup Circa 1969. I put it back like he set it up.
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Re: Oil leaks

Postby seneca2e » Tue Jan 01, 2013 7:26 pm

The parts manual for the IVO360A1A shows 71032 (8 each) for the engine lord mounts. Is that what you used on yours?
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Re: Oil leaks

Postby bryancobb » Tue Jan 01, 2013 7:34 pm

Another "brain fart." G E N E R A T O R !! Thanks.
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Re: Oil leaks

Postby bryancobb » Tue Jan 01, 2013 7:38 pm

By the way,

If you choose to remove your engine, you can lift the rotor, transmission, aft transmission mount, and all the cooling fans and aft shroud, without disassembling any of it.
Just the four AN-5 bolts that go through the bottom feet, and the two front transmission flange to firewall bolts.

That will save you 2 hrs on the way out and 2 hrs on the way in.
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Re: Oil leaks

Postby seneca2e » Tue Jan 01, 2013 7:59 pm

That was exactly my plan. Thanks for reinforcing it! Still trying to decide how much of the exhaust gets removed to clear everything. I just got that all that sealed good with new gaskets and hi temp sealer and hate to take it apart. I'm still going to take another shot at finding the leak but in order to see where I want to it's almost as much work as pulling the darn engine. Fuel pump needs to be removed to get to oil pressure line and main oil line on left bottom of engine. Putting the fuel pump back in that hole is awful. Plus might not find my leak there anyway. Trouble is when you pull a engine you see all this other stuff that would be nice to do and soon you're right back grounded forever. Right now I just want to FLY this thing not work on it!
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Re: Oil leaks

Postby bryancobb » Tue Jan 01, 2013 8:06 pm

If I remember right, The entire exhaust can be left assembled in the helicopter?

Just remove the straps that hold the exhaust to the 4 short stub pipes that are bolted to the exhaust ports.
Again, if I am remembering right, Some of the parts of the entire exhaust assembly needs to rotate at the slip-joints
as the engine is lifted.

There may be another way ?? But this worked pretty well. I don't see any way to not disassemble your silicone work.
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Re: Oil leaks

Postby bryancobb » Tue Jan 01, 2013 8:09 pm

seneca2e wrote:...Trouble is when you pull a engine you see all this other stuff that would be nice to do and soon you're right back grounded forever....


Been there ...done that! Six months grounded! Mine was JUST ONE CYLINDER low.
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Re: Oil leaks

Postby seneca2e » Tue Jan 01, 2013 8:16 pm

The only place the hi temp silicone was used sparingly was on the exhaust gaskets so I think that can stay by loosening the pipes at the slip joints as you suggest. Not so bad if I have to redo that anyway but it wasn't leaking a bit!
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Re: Oil leaks

Postby seneca2e » Mon Jan 21, 2013 8:13 pm

Well I removed the lower bolts from the magneto accessory case just hoping they were leaking but they were dry. Put some Permatex #2 on the threads to seal them even better but still in search of my main oil leak. Still thinking I'm going to have to pull it to find it but I'm just resisting that option right now. Maybe I just need a bigger drain hole out the bottom cowl :-).
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Re: Oil leaks

Postby seneca2e » Wed Jan 30, 2013 1:16 am

Amazingly the 10 bolts I pulled on the magneto accessory case and the oil screen adapter R&R seems to have drasticly cut down my oil leak! Like 95%! Either the magneto case retorqueing did it(the magneto accessory case IS the 4rth side of the oil sump) when I sealed the bolts or the oil screen was leaking-which I don't think it was. I had previously put in a shaft seal on the fuel pump adapter as that area leaked originally. At any rate I'm ecstatic if it doesn't come back! Hence I was able to leave the pattern and venture out to surrounding farms and explore the area. What fun-after 10,000 hours in fixed wing I'd forgot just how amazing a machine a helicopter truly is! I did a lot of cross county in the Enstrom mostly in the state of KY back when I had it and this is bringing those memories back! Get out and fly yours if you can! The cooler temps are making these things perform quite nicely!
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Re: Oil leaks

Postby bryancobb » Wed Jan 30, 2013 5:13 am

All I can say is "you must be loaded." :)

Your fuel bill for DEC & JAN is gonna be $1000.
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Re: Oil leaks

Postby Ken_Shea » Wed Jan 30, 2013 8:26 am

May be fun flying but not much filling.

Told my wife she had plenty of time after work to get a second job so there would be more funds available to get the Brantly going, she wasn't particularly agreeable with that, countered with what about just a part time second job?, she walked away, wonder if that means no?
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Re: Oil leaks

Postby seneca2e » Wed Jan 30, 2013 9:29 pm

Bryan,
We're a small FBO and it's always a struggle to put back the fuel you sell little on burn yourself! But I'm having too much fun and the tank ain't empty yet lol. My partner for 30 years in the FBO (who also doubles as my wife) has been complaining about me burning up all the fuel :-) I have been getting by with about 10gph on the hobbs the way I've been flying it which is pretty good for the fun I'm having!

Ken your wife was ready for that one :) Sure hope you get it flying again!
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