oleo oil level

Michael, the oil is added in the filler port until it runs out of the bleeder port, same as with the 108 series.  The weight of the aircraft is on the gear and so the shock is compressed by that weight.  The 10A service manual describes the process and has a good schematic of the oleo.  The 108 series airplanes were derived from the 10A design and the 10A shocks are essentially the same as the 108, although on the dash 3 they modified them slightly and put some rings on the piston.  Also they used 6 retaining pins for the cap instead of four.  I used equivalent quad seals instead of O-rings on mine (108-3) when I rebuilt them--they haven't leaked a bit.

I'm trying to figure out how to attach a scan of the page from the 10A Service manual, but without luck.  But it doesn't say anymore than what I've described above.  If you don't have a copy the Service Manual they come up frequently on eBay.

Dennis Crenshaw.  N6102M.  

 Thanks Dennis. Without the quad seal, how could the strut not leak? There is no seal anywhere, just the friction collar in the top nut.

@ecos36gmail-com  Yeah, I see that now in the diagram of the cylinder.  The 108 oleos have 2 seals; one around the circumference of the cap where it fits in cylinder, and the other is in the inside of the cap where the oleo shaft comes out.  The 10A diagram shows a 'packing' inside the cap, which I suppose is the seal.  I'll email you a copy of the page out of the service manual. 

Michael, send me an email to dennisc forty eight at comcast dot com and I will send you the page from the service manual.  Wish I could figure out how to attach it here.

There you go.  Attached as a pdf.

 Now I remember how it is, thanks!  

What did you end up doing with your seals? I'm hoping to find neoprene seals to convert this to 5606 hydraulic fluid. 

 I got 2 seals from McMaster-Carr  SKF 14977. I did need to use some JB Weld on the OD as the seals are a little undersize.

I'm not seeing SKF 14977 on their website? Maybe some other part number or identification? Thanks again!

 Try 5154T95. That is the number on their invoice.

@ecos36gmail-com This worked thanks!