Mailing List flyrotary@lancaironline.net Message #52460
From: Mark Steitle <msteitle@gmail.com>
Subject: Re: [FlyRotary] Re: Rear Planetary Gear Carrier
Date: Tue, 5 Oct 2010 15:50:08 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Lynn, 

Thanks for the confirmation.  I don't recall using any sealant on it during re-assembly (I may have, I just don't recall for certain).  If it is in fact leaking, I guess that means that I'll be pulling the gearbox, flywheel, counterweight and bearing carrier.  Or, is it possible to remove the six bolts and slide it out a 1/2" and, using a small brush, work some Permatex into the gap, then re-assemble?  This would be without removing the "BIG NUT".  

Mark S.

On Tue, Oct 5, 2010 at 3:38 PM, <Lehanover@aol.com> wrote:
In a message dated 10/5/2010 3:37:44 P.M. Eastern Daylight Time, msteitle@gmail.com writes:
Can anyone tell me what type of sealant/gasket/whatever should be used between the rear planetary gear carrier and rear side housing.  (See item 5 in the attached drawing)  Oil pressure is supplied to the bearing from the oil filter pad down through a channel in the rear side housing to the planet gear carrier and finally through the small hole in the carrier to the bearing.  While there is a seal around the rear main journal, I don't recall what should be used to seal the oil from leaking from around the 6 carrier bolts.  I ask because I may have a leak in this area.  

Thanks,
Mark S.  

 
That used to be a thin "O" ring. But those are sooooo expensive. It is now some sealant goop. I would use Non-hardening Permatex. Mazda has a silicone like sealant. And some where they say what to use.
 
The gear will leak a bit of oil if no ring or sealant is used. You can remove the rear stationary gear without disturbing the engine. Just don't turn the engine with the gear out. Just a fine bead of whatever you use.
You need none of it getting inside the engine.
 
Lynn E. Hanover

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