10
XTX Second Stage Regulator Maintenance Manual
Assembling and tting valve assembly
NOTE: Ensure Rubber Seating has been tted
ush with Shuttle Valve.
CAUTION: Ensure that Lever is not twisted
and that legs are parallel. Lever should
appear as that shown on the left, not as
shown on the right. If necessary, gently
squeeze legs together to straighten.
WARNING: Ensure that the spindle collar is
set in the correct position. Failure to do so
will result in a substantial loss of breathing
performance.
CAUTION: Ensure that the Spindle Collar
clicks rmly into position and that the entire
Valve Spindle Hole is visible.
4. Install a new,
lubricated ‘O’ Ring
(7) onto the Valve
Spindle. (18).
5. Press a new, lubricated ‘O’ Ring (34) onto the stem of
the Shuttle Valve (35). Press a new Rubber Seating
(29) into the front of the Shuttle Valve.
6. Fit the Valve Spring (33) onto the leading edge of the
Counterbalance Cylinder (32). Carefully guide the
stem of the Shuttle Valve through the Spring and into
the Counterbalance Cylinder.
7. If the Spindle Collar (17) was removed during the
disassembly process replace the Spindle Collar (17)
using a set of circlip pliers. Spread the Collar and push
it onto the Valve Spindle. Ensure that the arrow points
towards the lever.
CAUTION: Do not overstretch the Spindle
Collar when replacing doing so may cause
the Spindle collar to crack and break.
8. If you removed the Lever (20), position the Valve
Spindle (18) so that the Lever Hole is to the left of the
centre line and the Dimple is to the right of the centre
line with the threaded end facing you. (See photo
below left). Insert the lever so that it points to the right
of the Valve Spindle, as shown below.
9. Ensure that the Spindle Collar is rotated to the correct
position for the required Hose conguration.
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