Aqua Lung MRS III, Эксплуатация и обслуживание

Страница: 20 / 45

15.5.7. The only other replaceable part in the valve body is the copper gasket (YVAKIT-5)
that seals the bonnet nut to the body. Use the O-ring pick to lift this out. Use caution: a
scratch on the body will cause leakage and require body replacement.
15.5.8. To replace the seat (YVAKIT-1) use the stem
(YVASTEM) to screw the new seat assembly
into the valve body (YVABODY). Screw this
down against the seat but do not use the knob to
tighten it. Put the copper gasket (YVAKIT-2) in
place at the base of the body threads, and place
the stem on the tang of the seat assembly. Slip
the bonnet (YVABONNET) down the stem and
then screw it into the body. Tighten with the
wrench or socket, to 25 ± 5 foot pounds.
15.5.9. Place the knob (1389-2D) on the square of the
stem, place the spring (YVASPRING) and then
the nut (YVANUT) onto the stem. Use notched
screwdriver (9-47448) from SEA toolkit to
tighten the nut onto the stem.
Reinstall the plastic center cap. (1389-4)
15.6. SUPPLY CYLINDER VALVES
(VAL1).
15.6.1. The supply cylinder valves (figure 31) are very similar to
the fill valves, along with some additional parts.
15.6.2. There are three additional sets of parts. The first is the safety
burst disc assembly (6509-72), a normal replacement part. Second
are the valve lock parts; these are not normal replacement parts.
The third is the gauge.
15.6.3. Supply Cylinder Valve (VAL1) rebuild procedures.
15.6.3.1. Remove supply cylinder (CYL1) from MRS III.
15.6.3.1.1. WARNING! ASSURE THAT THERE IS
NO PRESSURE INSIDE THE CYLINDER. DO THIS BY
CHECKING THE GAUGE LOCATED ON THE CYLINDER
VALVE AND BY SLOWLY OPENING THE VALVE.
15.6.3.2. The valve (VAL1) can be rebuilt either with it in the
cylinder or with it removed from the cylinder. It is preferable to
have the valve removed from the cylinder, as this allows easier
handling and better cleaning.
page 14
figure 31
VAL1
figure 32
figure 33
100785