Service manual

FIRST TO DIVE 7
6. Insert the assembled shuttle valve, notch downwards,
into the insert, holding the lever at right angles to the
insert. Push the shuttle valve in until it passes the notch.
To check that it is correctly fitted, turn the insert over,
the shuttle valve should stay inside.
7. Fit a new lubricated O-ring (22) on the adjusting screw.
8. Fit the adjusting screw into the insert. The lever should
now be under tension (due to the spring). Screw the
adjusting handwheel in until the hole that accepts the
spring pin is exposed. Fit the spring pin (11) into its
position. Gently unscrew the adjusting handwheel until it
applies sufficient tension on the spring pin tp prevent it
from falling out.
Hole exposed
9. Fit a new lubricated O-ring (4) on the insert (7).
10. Fit a new lubricated O-ring (24) onto the venturi control
(6). Position the control handle upwards and push it fully
home into the casing.
11. While holding the lever down, fit the insert inside the
casing from the venturi control side. Make sure that the
flats on the insert fit into the flats on the casing.
12. Fit a new lubricated O-ring (4) on the insert and fit it
against the casing. Slide the heat exchanger (3), it’s
widest part first, onto the insert. Screw on the nut (5)
and tighten it at 0.5 m.kg.
13. Fit a new lubricated O-ring (10) onto the adjustable seat
(9). Fit the seat (threaded part first) into the insert and
push it fully home using a screwdriver.