Aqua Lung MRS III, Operation And Maintenance

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10.0 REPLACING THE SEAT IN THE BLEEDER VALVE (712):
10.1. Unscrew the knob (712KNOB) and turn it over. The knob will
pull through the bleeder keeper (59) by using a twisting motion.
Using a sharp instrument get it under the edge of the white tip
(712SSTIP) and lift it out of its hole.
10.2. If you cannot get out the white seat (712SSTIP) you may at-
tempt to dig it out with an O-ring pick or simply replace the knob
assembly (712KNOB). See figure 20.
10.3. Push 712SSTIP into hole. Reinstall in bleeder keeper.
11.0 REMOVING THE TOP PLATE:
11.1. There are six (6) screws that hold the top plate to the unit. Unscrew these (figure 21) and
lift the plate (figure 22).
11.1.1. WARNING-VERIFY THAT ALL
PRESSURE HAS BEEN DRAINED
FROM THE PLUMBING BEFORE
PROCEEDING.
11.2. Turn the top plate over, and inspect the
foam padding (PAD1and PAD2) for
damage (figure 23 ). If foam is worn or
damaged, replace.
11.3. Disconnect the cylinders (CYL1) from the
fill adapters (835) (figure 24).
page 8
figure 21
From this point on, it might be easier to perform
maintenance with the system removed from the
case. See section 13.0.
712SSTIP
712KNOB
PAD2
PAD1
figure 23
figure 22
figure 20