Just to add a footnote on this - had to replace the seals and bleed the system on TY last week!!
The seals that went into 1 cylinder were a really tight fit especially when trying to get the piston over the O ring so all looked well there. Had a bit of a surprise when taking the other one apart! Had a bit of a struggle to get the circlip out, it then broke in half allowing the piston (under the spring presure) to fly up and out :-O I was lucky as my forehead stopped the unit disapearing into the depths of the hanger although having a few splashes of brake fluid in the face wasnt much fun!!
I put the new seals in however these went in easier and I suspect this cylinder may have some wear and with the help of Phil at Skytrade received a replacement circlip the next day. It took about 45mins to re-install the cylinders into the aircraft and connect up the piping.
To bleed the brakes I topped up the reserve and left for about 20mins, I then had my mate sit in the cockpit and go through the rudder bar\brake lever routine whilst I dealt with the bleed nipples and topped up the reserve. We alternated between the wheels so that the fluid didnt bubble in each side. The whole routine took about 20-25mins. The brakes certainly hold the aircraft in the hanger although I'll have to wait a week or two before checking them under power.
