[T Creighton]

Hi Dave,
I did a big restoration on my F30 10 years ago.
Three shocks were bone dry due to the seals perishing.
I did not want to wreck them taking the arms off and therefore the reservoir cover without having the proper puller.
I managed to free up the threads on the reservoir cover and the lock ring until they could be turned easily by hand.
I wound the cover up as far as possible and the ring down as far as it would go.
That allowed enough room to take the old triangular ring out, clean up the groove and then slip a new standard o ring (can't remember the size sorry) over the arm and down into the groove. A bit of loctite teflon thread sealer in the groove first.
Then wound the cover back to the correct alignment and locked it with the ring.
Also fitted new small o rings under the small pressure adjusting screws in the centre of the shafts.
After lots of flushing out and refilling with glycerine then working the air out by much levering on the arms they all seemed to work ok.
I did all four and so far no leaks anywhere.
Cheers, Terry