X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 10 Jul 2013 15:36:57 -0400 Message-ID: X-Original-Return-Path: Received: from shorelineenergy.net ([68.228.9.207] verified) by logan.com (CommuniGate Pro SMTP 6.0.5) with ESMTP id 6367114 for lml@lancaironline.net; Wed, 10 Jul 2013 08:52:42 -0400 Received-SPF: none receiver=logan.com; client-ip=68.228.9.207; envelope-from=dana.westphal@shorelineenergy.net X-Ninja-PIM: Scanned by Ninja X-Ninja-AttachmentFiltering: (no action) X-MimeOLE: Produced By Microsoft Exchange V6.5 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CE7D6C.47BDADAC" x-vipre-scanned: 74C272F3004BFA74C27440 Content-class: urn:content-classes:message Subject: FW: [LML] Overhauling Landing Gear Actuators X-Original-Date: Wed, 10 Jul 2013 07:52:05 -0500 X-Original-Message-ID: <7854921C1CF4A447978C6F704B21641A02B63187@SERVER100.shorelineenergy.local> Thread-Topic: [LML] Overhauling Landing Gear Actuators thread-index: Ac59bEd8d/XIAzfdR0ipAz/VhLIuWQ== From: "Dana Westphal" X-Original-To: "Lancair Mailing List" This is a multi-part message in MIME format. ------_=_NextPart_001_01CE7D6C.47BDADAC Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I also had to clean up the snap ring groove with sandpaper as I burred it up a bit when removing the ring. I was more careful on the other two. Below is another tip I received from a fellow Lancair pilot: =20 Keep the o-ring and its groove dry and free of oil and grease except for the outside of the o-ring that will contact the actuator cylinder. On that surface, apply the hydraulic oil or the grease they recommend. This procedure is supposed to keep the o-ring from trying to roll out= of its groove when sliding the assembly into the cylinder, but still supplies lubrication for the o-ring to cylinder interface. I received this tip after I had already rebuilt mine, but I do recall my O-rings trying to squirt out of their grooves during installation. Good luck! =20 Dana Dana Westphal Legacy RG N97DW =20 From: marv@lancair.net [mailto:marv@lancair.net]=20 Sent: Tuesday, July 09, 2013 3:31 PM To: lml Subject: Re: [LML] Overhauling Landing Gear Actuators =20 Posted for Chris Zavatson : > Pete, > Your groove must have a small burr or similar grabbing the O-ring. = I=20 >suggest some fine wet/dry sandpaper to knock down the edges of the O-ring=20 >groove. I use a home-made polishing/honing tool made of wet-dry strips that=20 >takes care of this when I clean up the inner bore. By hand should work >also. 400-600 grit if you need to take material off. Down to 1,000 grit for=20 >finishing. > And of course lots of Parker O-Lube helps also, but this will not make up=20 >for a burr. =20 > see also=20 >http://n91cz.com/Hydraulics/Rebuilding_Lancair_Hydraulic_Cylinders.pdf > good luck, > =20 > Chris Zavatson > N91CZ > 360std > www.N91CZ.net >=20 >From: CavittP > To: lml@lancaironline.net=20 > Sent: Tuesday, July 9, 2013 5:15 AM > Subject: [LML] Overhauling Landing Gear Actuators >=20 >=20 >=20 > Any hot-tips on how to replace O-rings in landing gear actuators? I'm >having a hard time not causing damage getting them past the snap ring=20 >grooves. >=20 > Pete Cavitt - N320PL=20 > +1-619-701-0784 Cell > http://www.petecavitt.com/ >=20 >>> ------_=_NextPart_001_01CE7D6C.47BDADAC Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I also had to clean up the snap ring groove with sandpaper as I burred= it up a bit when removing the ring. I was more careful on the oth= er two. Below is another tip I received from a fellow Lancair pilo= t:

=

Keep the o-ring and its groove= dry and free of oil and grease except for the outside of the o-ring tha= t will contact the actuator cylinder. On that surface, apply the= hydraulic oil or the grease they recommend. This procedure is sup= posed to keep the o-ring from trying to roll out of its groove when slid= ing the assembly into the cylinder, but still supplies lubrication for= the o-ring to cylinder interface. I received this tip after I had= already rebuilt mine, but I do recall my O-rings trying to squirt out= of their grooves during installation. Good luck!

Dana

Dana Westphal

Legacy RG N97DW

From: marv@lancair.net [mailto:marv@lancair.net]
<= b>Sent: Tuesday, July 09, 2013 3:31 PM
To: lml
Subje= ct: Re: [LML] Overhauling Landing Gear Actuators

Posted for Chris Zavatson <chris_zavatson@yahoo.com>:

> Pete,
> Your groo= ve must have a small burr or similar grabbing the O-ring. I=
>suggest some fine wet/dry sandpaper to knock down the edges of= the O-ring
>groove. I use a home-made polishing/honing too= l made of wet-dry strips that
>takes care of this when I cle= an up the inner bore. By hand should work
>also. 400-= 600 grit if you need to take material off. Down to 1,000 grit for=
>finishing.
> And of course lots of Parker O-Lube helps= also, but this will not make up
>for a burr.
> see= also
>http://n91cz.com/Hydraulics/Rebuilding_Lancair_= Hydraulic_Cylinders.pdf
> good luck,
>
>= Chris Zavatson
> N91CZ
> 360std
> www.N91CZ.net
>
>From: CavittP <cavittp@aol.com>
> To: lml@lancaironline.net
> Sen= t: Tuesday, July 9, 2013 5:15 AM
> Subject: [LML] Overhauling Land= ing Gear Actuators
>
>
>
> Any hot-tips on= how to replace O-rings in landing gear actuators? I'm
>hav= ing a hard time not causing damage getting them past the snap ring
&= gt;grooves.
>
> Pete Cavitt - N320PL
> +1-619-701-07= 84 Cell
> http://www.peteca= vitt.com/
>
>>>

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