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

> Pete,
> Your groove 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 tool made of wet-dry strips that
>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
>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
> Sent: Tuesday, July 9, 2013 5:15 AM
> Subject: [LML] Overhauling Landing Gear Actuators
>
>
>
> 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
>grooves.
>
> Pete Cavitt - N320PL
> +1-619-701-0784 Cell
> http://www.petecavitt.com/
>
>>>