BIRD MARK 7 - Page 21

§.12 Reinstall Bird logo and plug as follows:
m Using a screwdriver, replace nylon washer
(P/N 0109) and screw (P/N 0189) into
threaded opening at front of Centerbody, just
- above INSPIRATORY FLOWRATE control.
m With your hand, place Bird logo back into
Centerbody and press in place.
E SUPPLEMENT MARK ZA
To complete reassembly of the Bird MARK 7A, you X
will need to add steps 5.13-5.16 to the above
Centerbody reassembly — Section 5.0.
FIGURE 31
5.13 APNEUSTIC FLOWTIME control assembly
(P/N 4095).
m Inspect O-rings (P/N 0114, P/N 0138 and
P/N 7849 on valve body) for flat spots, cuts or
damage. Replace if necessary.
m Using a Y open end wrench, secure
APNEUSTIC FLOWTIME control valve to
Centerbody.
E Place a drop cf tubricant (P/N 0631) on
O-ring (P/N 0138) on valve stem.
® Install two (2) cam stops (P/N 4020) and
packing nut onto valve body and secure in
m Using a 952" allen wrench, secure
APNEUSTIC FLOWTIME CARTRIDGE to
Centerbody. See Fig. 32 for proper positioning
of the CARTRIDGE. a
m Inspect seal (P/N 1367) and diaphragm
(P/N 0168) for excessive wear or defects.
Replace if necessary.
@ Reinstall internal components into
CARTRIDGE (Fig. 31) per exploded view.
19
NOILI3S
NOTE: When installing diaphragm (P/N 1367) into
CARTRIDGE, insert with the thin ridge facing toward the
spring and plunger.
place using a Y” open end wrench.
NOTE: Install cam stops (P/N 4020) with the stop tab
facing
away
from
the
Centerbody.
@
install
diaphragm
(P/N
0168)
with
nipple
5.14 APNEUSTIC FLOWTIME CARTRIDGE
assembly to be as follows:
m Inspect CARTRIDGE O-rings (P/N 0328
and P/N 7849) for flat spots or cuts. Replace if
necessary.
M insert poppet and return spring into
CARTRIDGE nose (see Fig. 31) and secure in
place with mounting cap and %” open end
wrench.
inserted into back of carn button (P/N 4209).
m Using retaining ring (with stamped
numbers facing outward), secure CARTRIDGE
cap in place with truarc pliers #1.
5.15 PRESSURE/TIME CYCLED SELECTOR
SWITCH assembly as foliows:
™ Inspect the three (3) O-rings (P/N 0138) for
flat spots, cuts or damage. Replace if
necessary.
m Place a drop of lubricant (P/N 0631) on
each O-ring and insert rod into Centerbody.
Secure in place with a %s" open end wrench.
5.16 Using a screwdriver, reinstall nylon washer
(P/N 0109) and screw (P/N 0189) into threaded
opening at bottom of Centerbody.
5.17 Tubing installation.
NOTE: It will again be necessary to use the padded
vise to stabilize the CARTRIDGE while tightening the
mounting cap.
m Prior to tubing installation, check all quick-
disconnect bayonet O-rings (P/N 6435) for fiat
spots or cuts. Replace if necessary.
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