19
5.4.9 When the shuttle assembly is inserted into the valve tube, it is important that the “L” shaped foot
on the piston section engages properly with the lever tabs that extend through the holes in the valve
tube. In Photo # 10, the “J” shaped foot has been highlighted with black marker so you can see the
“J” clearly. The piston is normally all white.
5.4.10 Insert the shuttle valve assembly as shown in Photo # 10. Push the assembly all of the way
into the valve tube. The first thing that might hang up on the tabs of the lever is the black seating
seal. Wiggle the lever to get this past the tabs. When the “J” shaped feet get to the lever tabs they
will lift the lever inwards as you push the assembly in.
5.4.11 Install a new well lubricated O-ring (28) onto the spring adjuster plug (29).
5.4.12 Insert the spring adjuster plug into the valve tube over the shuttle valve assembly you just
installed.
5.4.13 Turn the spring adjuster plug clock-wise until the O-ring and flange have passed the hole where
the pin (20) is installed.
5.4.14 Install the pin (20) into the valve tube (21).
5.4.15 Back the spring adjuster plug out counter-clockwise until it tightens against the pin (20), hold-
ing it in place.
5.4.16 Install the new O-ring (15) onto the venturi control lever (16).
5.4.17 While holding the tabs in place in the valve tube with two fingers, depress the lever (19) and
the slide the venturi control lever (16) into place on the valve tube (21).
5.4.18 Install the valve tube assembly into the housing (10). After assembly, make sure that the pivot
end of the lever is held into the valve tube (21) by two plastic flanges on the housing just as they did
when you took the housing apart (see step 5.2.7).
Photo 10
