TM 3-6665-209-35
2. Mount the switch bracket to the
(q) Calibrator assembly.
Install the
back of the front panel and
calibrator assembly (par. 25).
secure it in place with two
(r) Electric chassis assembly. Install
screws (52), lockwashers (46),
the electric chassis assembly (TM
and nuts (45).
3-665-209-12).
3. Replace
the
two
wires
(s) Air shutoff valve assembly. Install
previously removed and solder
the air shutoff valve assembly (par.
them to their respective switch
terminals. Refer to the wiring
(t) Motor and pump assembly. Install
diagram (fig. 2).
the motor and pump assembly (par.
(o) VALVE fixture.
1. Position the test valve bushing
(u) Balance orifice holder. Install the
(6, fig. 4) against the face of the
balance orifice holder (par. 11).
front panel and the test valve
(v) Indicator lights. Install the indicator
flange (13) against the back of
lights (par. 10).
the front panel (42, fig. 3).
(w) Fuse holder XF1. Install the fuse
Secure them in place with four
holder XF1 (par. 9).
screws (14, fig. 4).
(z) Electric bell DS5. Install the electric
2. Insert the test valve plunger (1)
bell DS5 (par. 8).
into the -test valve adapter (2),
(y) Chassis assembly.
Install the
the test valve sleeve (3), and
chassis assembly into the cabinet
the test valve spring (4). Then
assembly (TM 3-6665-209-12).
install the test valve plunger with
(4) Adjustment.
these components assembled to
(a) Pressure gage. The pressure gage
it as a unit into the test valve
may be adjusted before or after its
bushing (6) and the test valve
installation
into
the
chassis
flange (13). Aline the slot of the
assembly.
test valve plunger (1) with the
1. Rotate the clear plastic dial
setscrew (5) and screw the
cover
counterclockwise
setscrew into the slot.
approximately one-quarter turn.
3. Install the test valve collar (15)
over the exposed end of the test
Note
valve plunger (1) and with the
test valve plunger in its
The dial cover is seated in a rubber
restricted position, place the test
gasket and this tight fitting may make
valve collar against the test
it difficult to turn the cover from its
valve flange (13) and connect
present position.
these together by tightening the
two setscrews (12).
2. Remove the cover from the
4. Install the rubber tubing (16)
pressure gage.
over the protruding end of the
3. Turn the knurled screw at the
test valve plunger (1) in the
base of the gage identified as
back of the front panel.
ZERO SET until the gage
(p) Pressure gage.
pointer is alined on the zero of
1. Install the pressure gage (9) in
the graduated scale.
the rear of the front panel and
4. After adjustment is made, install
secure it in place with three
the clear plastic dial cover to the
screws (10), lockwashers (28),
gage body and rotating it
and nuts (29).
clockwise approximately one-
2. Connect the copper tubing (57)
quarter turn.
to the center connection at the
(b) Calibration. Calibrate the chassis
back of the pressure gage (9)
assembly in accordance with the
with its tube coupling nut.
instructions contained in TM 366-.5-
092.
Note
Before installing the tube coupling
nut, apply lead compound to the
threads of the center connection to
form a seal.
AGO 8069A
29