Loosen locking screw by turning counter clockwise; Slide hex wrench down into adjusting screw; Turn both screws clockwise to increase cracking pressure, counter-clockwise to decrease.
Welding should be done by qualified personnel as outlined in Section IX of the ASME Boiler Code. Weld filler material should be the same as the base material.
Remove three (3) Capscrews from Cylinder Cap (9/64 in. hex wrench) and remove Cap; Remove Spring(s) - “1C” model only; Unscrew Bonnet Nut (1 in. open-end wrench).