TM 3-6665-209-35
lead compound around the threads to
(d) Governor resistor R1 and radio
form a seal.
noise suppression capacitor C2.
1. Install the governor resistor R1
(23) and the radio noise
3. Screw the nipple (37) with the
suppression capacitor C2 (18)
pipe tee (38) and the adapters
to the bottom of the chassis
(11) into the solenoid valve L1
base (16) and secure them in
(36).
place with three screws (24) and
4. Screw the elbows (3) into the
nuts (21).
solenoid valves L1 (36), L2 (4),
2. Solder the wires leading to the
L3 (12), and L4 (33).
resistor and the capacitor at the
5. Install the solenoid valve L4 (33)
proper terminals. Refer to the
wiring diagram (fig. 2).
on the chassis base (30) and
(e) Test counter receptacle connector
install the solenoid valves L1
J2.
(36), L2 (4), and L3 (12) on the
1. Install
the
test
counter
valve mounting bracket (15).
receptacle connector J2 (42, fig.
Secure each solenoid valve in
4) at the rear of the chassis
place with two screws (14) and
base (31) and secure it in place
lockwashers (13).
with
two
screws
(41),
6. Install the valve mounting
lockwashers (43), and nuts (44).
bracket (15) on the chassis
2. Solder the four wires leading to
base (30) and secure it in place
the test counter receptacle
connector J2 to their respective
with
four
screws
(16),
terminals. Refer to the wiring
lockwashers (17), and nuts (18).
diagram (fig. 2).
7. Connect the tube coupling nuts
(f) Orifice block.
of the copper tubes (1, 2, 34,
1. Position the orifice block (17, fig.
35, 39, and 40) and the rubber
3) in the bottom of the chassis
tube adapter (10) to the various
base (16) and secure it in place
elbows (3) and adapters (11) on
with two screws (32, fig. 11) and
the solenoid valves.
lockwashers (31).
8. Connect the marked wires to the
2. If previously removed install two
proper terminals on the terminal
adapters (11) in the orifice
board TB2 (20) and secure with
block.
the terminal screws.
Note
Note
Before installing the adapter or any
other threaded pipe connection,
If there is any doubt about the wire
apply lead compound around the
connections, refer to the wiring
threads to form a seal.
diagram (fig. 2).
3. Connect the copper tubes (35)
(c) Bell transformer T2 and terminal
and (14, fig. 3) to the adapters
with their tube coupling nuts.
board TB3.
1
4. Install a /2-inch long rubber
1. Position the bell transformer T2
tube (23, fig. 11) over each
(28, fig. 3) on the chassis base
comparison orifice (24) and
(16) and secure it in place with
insert the orifice in the orifice
two screws (41) and nuts (40).
block.
Each pyrex orifice is
2. Position the terminal board TB3
marked with the word FLOW
(27) on the chassis base (16)
plus an arrow.
Install each
and secure it in place with two
orifice with the arrow pointing in
screws (39) and nuts (26).
the same direction as the
3. Connect the two electrical wires
indicator airflow at this location.
leading to the bell transformer
Note
T2 to the two terminals on the
terminal board TB3. Connect
The comparison orifice 01 is next to
the two electrical wires leading
the solenoid valve L4 (33) and the
from the bell toggle switch S7
comparison orifice 02 is next to the
(22) to the same two terminals
air shutoff valve assembly.
to which the bell transformer T2
wires are connected.
AGO 8069A
27
