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Over the weekend I machined a volume spacer for my RP2..
Let the pressure out of the shock and proceeded to unscrew the air sleeve, expected the air sleeve to extend all the way down the shaft as normal..leaving most of the shaft visible.
But the air sleeve is pushing back towards the threads with some pressure..in order to install the volume spacer I have to pull the air sleeve down and hold it.
Does this mean my shock has air stuck in the negative chamber? AKA stuck down shock.
Can I fix this at home?
Or send it off to TF tuned for a service and push as I had been planning to do if the volume spacer didn't work well enough.
Edit..AKA stuck down..mine is actually reverse of this. But the shock will still compress once on the bike and pressurised
Don't worry, just carefully pull / twist it a little bit harder when fully unscrewed (a touch more than you're comfortable with!), it'll 'pop' off. Wrap it in a load of paper towel and hold it to your chest like opening a jar, to stop float fluid doing everywhere.
I assume its suction from the main seal when it flips over / inside out.
[edit]
When you're screwing it back together you'll also need to push it down fairly firmly at the same time, so use the same technique as above, or wrap the eyelet in an old inner tube and use a vice.
Screwing it down isn't a problem at the moment..
Obviously a bit more difficult when the shock isn't in the bike..
What do you mean by when the main seal flips over/inside out?
The seal that's visible on the air can that's in contact with the main shaft?
If so that seal is still looking normal..
Yes, I've always assumed the stiction (an elastic / springy feel) is when you're pulling the can down, the main seal gets partially rolled inside itself on the shaft (again, presumably, a sign that the seal is good) and when you 'pop' the can off the seal bounces back.
Take the valve out and try again?