8
13. Press fit the flow vane (29) inside the flow vane ring (31), until the
vane is up against the ring and the teeth of the two parts are at the
same level. Set this assembly aside.
14. Remove the poppet (stem assy) (49) from its paper envelope.
Handling it carefully, generously lubricate the .323 o-ring at the
base of the poppet (stem assembly) (49).
15. Returning to the regulator set aside earlier, and using a pair of
tweezers, forceps or other delicate instrument, grasp the poppet
(stem assembly) (49) by the top nut and carefully insert it in the
opening made by the housing knife edge. Take care to not strike
the knife edge with the metal end of the poppet. Lower the poppet
into position, until its round top is contained within the four teeth
of the housing, and the nut is uppermost.
16. Set the spring support (26) on the top of the spring (25), and
carefully balance both on top of the poppet in the regulator
housing. Taking the flow vane sub-assembly from step 13. above,
screw the whole unit all the way in into the case (15), first by
hand, and then using a special tool (PN 43.420.012) or a pin
spanner braced against the two teeth of the flow vane ring. Do
not force it, but tighten it, stopping with teeth at 12 & 6 o’clock.
17. NOTE: It is critical that the teeth of the flow vane ring (31) and
the flow vane (29) are positioned in a 12 o’clock/6 o’clock
orientation. Rotate the inner flow vane until its biggest tooth rests
at the 12 o’clock position with the mouthpiece up.
18. Insert the flow vane washer (32), ensuring that when the tab is in
the slot of the case, the grooves meet the teeth of the flow vane
ring (31). Rotate the flow vane ring slightly as needed to allow the
washer to fall into place. Insert the dive switch (33), matching its
larger groove to the bigger tooth in the flow vane (29). Insert a
lightly lubricated .347 o-ring (34) into the space around the hex
adjustment screw (27). Insert the flow vane plug (35), and using a
pin spanner or the Multitool (function #9), tighten it clockwise.
Do not tighten excessively. Move the dive switch to be sure it
slides freely with a minimum of friction.
19. Holding the regulator mouthpiece down, screw or unscrew the
lever adjustment hex screw (16) with a 3/32"Allen key, until the
top edge of the lever is level with the rim of the case. Note that if
the regulator is instead held vertically, the lever may fall
forward of the plane of the case rim, giving incorrect feedback
regarding lever height.
NOTE: To avoid unnecessary play in the lever, it is best to make the
adjustment above while the 2nd stage is pressurized, as the lever
will drop 0.25-0.5mm upon pressurization. See Tuning and Final
Adjustment below.
20. Examine the diaphragm (38) for cuts, holes or an irregular edge.
Check that the disc insert (50) is secure in its groove in the
diaphragm. Do not insert the diaphragm at this time.
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