Aqua Lung APEKS TX 50 Technical Manual page 14

14
9
Unthread the adjusting screw (23) from the valve spindle (20). Use
your fingernail to remove the plug (22) from the adjusting screw.
10
Remove the o-ring (24) from the adjusting screw (23) and
o-ring (3) from the valve spindle (20). Discard o-rings.
11
Insert a small ⅛" wooden dowel into the threaded end
of the valve spindle (20) to push out the shuttle valve
assembly, counter balance cylinder, valve spring & shuttle valve
(25-29). Separate the shuttle valve assembly once removed.
12
Remove the MP seat (29) and o-ring (27) from the shuttle
valve (28). Discard both the MP seat and o-ring.
13
Insert the seat adjustment tool (PN AT51) into the threaded
end of the valve spindle (20) and turn the seat (18) out 6-7
turns counter-clockwise. Place the seat extraction tool into the
opposite end of the valve spindle and push to remove the seat.
14
Remove the o-ring (19) from the seat (18) and discard.
Closely inspect the sealing edge and o-ring groove of the
seat for damage. If damage is found, replace the seat.
15
Inspect the lever (21)
for damage. If it is
necessary, remove the lever
carefully one leg at a time from
the valve spindle (20).
NOTE: The lever does not need to be removed during service,
unless following inspection it appears to be bent or damaged.
16
Remove the exhaust
tee (15) by folding
the ends inward and pulling
straight out.
TX50 Technical Manual
Sealing Edge
O-ring Groove