BIRD MARK 7 - Page 19

5.4 Reinstalling the ceramic bushing and
spindie.
m Install 3 “new” O-rings (P/N 0193) on the
ceramic bushing.
@ Lightly moisten the O-rings with water and
insert the bushing into the Centerbody using
tool (P/N 0031) to press in place.
m Using truarc pliers #1, install the truarc
retaining ring (with stamped numbers to out-
side) into Centerbody, securing ceramic
bushing in place.
FIGURE 28
m Install 2” of new safety wire (P/N 298)
through hand timer rod and locknut siot and
secure in an “S” shape.
® Using truarc pliers #1, reinstall diaphragm
retaining ring into, Centerbody with flat side of
ring flush against diaphragm. o
5.6 CONTROLLED EXPIRATORY TIME CAR-
TRIDGE reassembiy, as follows:
E Inspect poppet O-ring (P/N 0306), seal (P/
N 1367) and diaphragm (P/N 0168) for exces-
sive wear or defects and replace if necessary.
= Reinstall components into CARTRIDGE
(see Fig. 29 for exploded view of CARTRIDGE
assembly).
= insert ceramic spindle carefully into bush-
ing. Ensure that the long shoulder of the spin-
die is on the Pressure Compartment side (Fig.
28).
NOTE: Do not touch raised shoulders of spindle. Install
using a clean tissue or cloth.
5.5 Reassemble hand timer rod and related
parts as follows:
m Install the small washer (P/N 0135), sen-
sitivity armature (P/N 0327), diaphragm (P/N
0714) and spacer bumper with O-ring (P/N
0124) onto the hand timer rod shaft (P/N
0346) (Fig. 28).
™ Carefully insert the shaft into the ceramic NOTE: When installing diaphragm (P/N 1367) into
switch spindle from the Ambient side (Fig. CARTRIDGE, insert with the thin ridge facing toward the
28). spring and plunger.
m install diaphragm (P/N 0168) with nipple
NOTE: Use finger to block spindle from falling out of inserted into back of cam button (P/N 4209),
the Pressure side of Centerbody as hand timer rod is
installed into spindie.
m Instali pressure armature plate (P/N 0927)
and locknut onto hand timer rod (insure
bumper O-ring P/N 0143 faces the ceramic
switch), use needlenose pliers to stabilize the
hand timer rod. Carefully tighten the locknut
until there is zero end play in the armature
plates.
FIGURE 29
® Using retaining ring (with stamped
numbers facing outward), secure CARTRIDGE
Cap in place with truarc pliers #1.
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