Squirt of water comes in with the air on SI-Tech inflator... how to service?

[Matt S.]

My mangy old backup suit has a bit of a leak in the inflator. It is a swiveling SI-Tech model, on a Bare CD4. I THINK the leak coincides with inflation, and it isn't a leak at the valve port. It can be hard to tell since I can't exactly see what's going on in there.

Are there teardown instructions anywhere for these valves? I have seen a few posts similar to this one on the board, but none got an answer. If I suspect water coming in with a press of the button, is there a likely culprit in there?

Thanks!