5.4.19 Install the O-ring (9) over the external threaded end of the valve tube (21).
5.4.20 Install the bushing (8) (flat side facing the body) over the external threaded end of the valve tube.
5.4.21 Install the nut (7) over the external threaded end of the valve tube. Tighten the nut snuggly 1-2 ft/lb
(2-3 Nm) with a wrench.
5.4.22 Install the new lubricated O-ring (17) onto the seat (18).
5.4.23 Use the 3/16” Allen wrench or the 2nd Stage, Inline Adjusting Tool - 3/16” Hex (p/n 347-0002) to install
the seat into the valve tube.
5.4.24 Tighten the seat (18) clockwise with the Allen wrench. It is important that the final adjustment leaves
the lever with about 1/8” (3.2 mm) free movement at the end, to allow for the natural wear of the seating seal
(22) during the use of the regulator. Adjust the seat (18) in, while moving the end of the lever up and down
with the tip of your finger. When the seat is too far out (counter-clockwise) you will feel a firm springiness
with no free movement. When the seat is too far in (clockwise) you will feel a great deal of looseness at the
end of the lever. You want the seat (18) to be positioned so that you feel the 1/8” (3.2 mm) free play when
you move the tip of the lever with your finger. See photo 9.
Inline Adjusting Tool Method:
Install the Zeagle Inline Adjusting tool p/n 347-0002 between the hose and the 2nd stage body. Turn the
plastic spring adjuster plug (29) on the regulator all of the way out (counter clockwise). Use the inline tool
to just begin to thread the seat (18) into the valve tube. CAREFULLY turn the tank air on just barely enough
to let airflow through the regulator. You will hear a hiss of air coming from the second stage. Turn the
seat clockwise (toward the seal). As soon as the seat makes contact with the seal, the air will stop flowing
through the second stage. Adjust the seat further so that there is no hissing noise and the lever has 1/8”
(3.2 mm) free play when you move the tip of the lever with your finger. See photo 11.
Note:
Depress the lever (19) while moving the seat with the wrench. This prevents premature indentation
and wear of the seal (22).
5.4.25 Install the exhaust tee (13) onto the case by hooking the tee over the flat part of the flange and then
working it over the rest of the flange. This operation is made much easier if the tee is immersed for one
minute in hot tap water to soften it temporarily.
20
Photo 11