Remove fire extinguisher from
Attach valve assembly and
tighten swivel coupling nut on the new cylinder and
place fire extinguisher in mounting bracket.
Break seal by pulling safety pin
Point horn at base of flame.
(d) Press trigger for discharge and
Maintenance. Weigh fire extinguisher
direct stream at base of flame.
every 3 months, and replace cylinder if gross weight has
Replace cylinder immediately
decreased 4 ounces or more. Lubricate cylinder neck
threads with one drop of OE 30 oil before reassembly.
Replacement of Cylinder. To replace
cylinder, perform the following:
The foam type fire
Press lever to release pressure
extinguisher is similar in size and appearance to the
from used cylinder.
soda-acid extinguisher but differs in internal construction
and extinguishing agent.
(b) Loosen swivel valve coupling
nut and remove valve assembly from used cylinder.
Remove the foam
extinguisher from its location.
Invert the fire
Remove instruction band from
extinguisher permitting the contents of the two
chambers to mix, and flow from the hose.
Refilling and Maintenance.
detailed instructions on refilling and maintenance, refer
(e) Replace safety pin in valve and
to TM 5-687 and TM 9-1799.
seal pin with sealing wire.