Section II. AIR-CHARGING ABC-M9-7 or M9A1-7 FLAMETHROWER

m. When the pressure tank is charged, close the

er.) Screw the pressure cylinder test gage assembly (5,

fig. 9) onto the check valve.

pressure tank valve (7, fig. 6), open the bleeder valve (6,

h. Open the pressure tank valve (6).

fig. 8) to reduce pressure in the hose, and remove the

i. Close the filling line valves (1).

hose (4, fig. 9) and pressure cylinder gage (5) from the

j. Open the cylinder valves (2).

tank. Screw the cap on 'the check valve (7, fig. 8) and

wrenchtighten.

k. Read the pressure gages to determine which

n. When all pressure tanks have been charged,

cylinder has the lower pressure. Open the filling line

follow directions in paragraph 7i.

valve (1) at the gage showing the lower pressure.

I. Observe the pressure cylinder test gage until the

9. Testing Pressure in Pressure Tank

a. Unscrew the cap from the check valve (7, fig. 8).

needle stops rising or reaches at least 1,700 psi. When

the gage reaches the desired pressure, turn off the filling

b. Moisten the end of the check valve with water or

line valves (1). II necessary, continue using cylinders

saliva.

with higher pressure (para 7h(2)) to reach 1,700 psi.

c. Screw the pressure cylinder test gage (5, fig. 9)

When the highest pressure shown on the filling line gage

on the check valve (7, fig. 8).

is less than 1,700 psi, close both cylinder valves and

d. Read the gage (1) to determine the pres- sure in

bleed the pressure from the rubber hose. Close all filling

the pressure tank.

line valves and re- move the cylinder having the lowest

e. Unscrew the gage and replace the check valve

pressure. Replace it with a fully charged cylinder. With

cap.

chalk, mark the lowest pressure on the removed cylinder.

Section II. AIR-CHARGING ABC-M9-7 or M9A1-7 FLAMETHROWER

(4) Connect the quick-coupling adapter as- sembly

10. Using AN-M4 Compressor

(12, fig. 3) to the male coupling half on the high-pressure

Charge the ABC-M9-7 or M9-A1-7 high-pressure

sphere valve (2, fig. 10).

spheres as follows:

(5) Close the bleeder valve (6, fig. 8).

a. Attaching Charging Hose Assembly (18, fig. 2) to

c. Charging.

Compressor. Follow directions given in paragraph 5a.

(1) Open the globe valve (6, fig. 6) on the separator

b. Attaching Hose Assembly to High-Pressure

of the compressor.

Sphere.

(2) Start the engine.

(1) Close the high-pressure sphere valve (2, fig. 10).

(2) Disconnect the pressure hose (1) from the plug

NOTE

on the high-pressure sphere valve.

(3) Screw the quick-coupling adapter assembly (12,

There are four models of the AN-M4

fig. 3) into the bleeder valve assembly that is on the 6-

compressor.

Refer to applicable

foot rubber hose (36, fig. 2).

technical manual (appendix) for the

type of compressor being used.

WARNING

See that the locking collar on the

(3) Close the globe valve.

quick-disconnect coupling half is

fully retracted and resting against the

WARNING

first wrenching surface. Do not push

Operating personnel must always

locking collar forward since this will

position themselves away from the

release the coupling half from the

charging hose assembly during

charging fitting.

charging operations. If either the

charging hose or connector fail, the

remaining portion of the charging

hose will "whip around" and may

injure personnel in its path.

(4) Open the high-pressure sphere valve (2, fig. 10).