ORIGINAL: Turk1
I am using a sawing needle as a rail to slide o rings into that groove on High speed needle otherwise I cant step up the wall of groove.Put the sawing needle parallel on the needle and try to push o ring on both of them.When you reach the near spot,use sawing needle like lever to slide into groove.
Good luck
You have to be very careful not to let the point of the needle touch the O-ring. It will cut it as quickly as a razor. I used to rebuild hydraulic equipment and O-rings were always an issue. I've broken and damaged many an O-ring over the years. Sharp edged, either on the tools you use to install them, or on the groves they rest in will quickly do in a ring.
You could take a needle and using a very fine whet stone or India stone, radius the point to about 3/4 the diameter of the needle. This will help a lot to prevent damage, but you still have to be careful of damaging it.
Don