So, when I noticed small bubbles leaking from the connection between my SPG and hose, I knew it was the so-called "spool." Reading through the various threads in which someone asked about this, the solution seemed simple: unscrew the SPG, pull out the spool, and either replace the o-rings or replace whole thing. I replaced the spool with one from Dive Gear Express, and figured that was that. I coated the o-rings lightly with Tribolube. Perhaps too lightly? I didn't want to accidentally get lube into the spool orifice. I tightened the connection just beyond hand tight using two adjustable wrenches. I pressurized the reg set and put the SPG in a bucket of water to test it out, and observed no bubbles. However, on the first actual dive, I was getting bubbles--even more bubbles than before I replaced the spool. What did I do wrong? I had a dive shop fix it, but I didn't have the opportunity to ask a tech what the problem was.
Can anyone point me to an illustration that shows in cutaway view how this connection works? It seems to me that only one of the o-rings is captured in the swivel connection, while the o-ring at the other end remains fixed. I'm pretty good at mechanical things, but I just can't seem to visualize how this mechanism serves to provide an airtight swivel connection.
Can anyone point me to an illustration that shows in cutaway view how this connection works? It seems to me that only one of the o-rings is captured in the swivel connection, while the o-ring at the other end remains fixed. I'm pretty good at mechanical things, but I just can't seem to visualize how this mechanism serves to provide an airtight swivel connection.