I recently bought a pair of R109s with what I think are MkV first stages. Thought I was assured that they worked, one of the 109s doesn't supply air and the other has a jammed adjustment knob. Initially I was just going to write them off as a bad purchase, but I was talking to the instructor who does my college club's gear maintenance who said that it wasn't terribly difficult to maintain regulators. For background, I tend to DIY a lot of my stuff, including fencing gear, computers, my car, etc, so I'm sort of inclined to that sort of stuff anyway.
I searched around google and scubaboard and came up with a bunch of links to service manuals, etc, but couldn't find one for the 109. Does anyone have a link to it? Also, where's the best place to get replacement parts for it (or the 156, which I understand I can use parts of to convert it to a balanced rig)? The previous owner did include a bag of spare o-rings and screws, most of which do look like they're in acceptable condition.
Secondly, what's the most likely failure mode of this activity. Am I likely to cause catastrophic failure of the second stage, or am I likely to just see freeflow? Is it likely to occur immediately and predictably, like when I reach a particular depth, or within a few minutes of submerging, or is it likely to just fail randomly at some point months down the road?
Thanks
Andrew
I searched around google and scubaboard and came up with a bunch of links to service manuals, etc, but couldn't find one for the 109. Does anyone have a link to it? Also, where's the best place to get replacement parts for it (or the 156, which I understand I can use parts of to convert it to a balanced rig)? The previous owner did include a bag of spare o-rings and screws, most of which do look like they're in acceptable condition.
Secondly, what's the most likely failure mode of this activity. Am I likely to cause catastrophic failure of the second stage, or am I likely to just see freeflow? Is it likely to occur immediately and predictably, like when I reach a particular depth, or within a few minutes of submerging, or is it likely to just fail randomly at some point months down the road?
Thanks
Andrew