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 TM 3-1040-214-12
Section IX. TANK GROUP
4-28. Pipe and Cap Assembly, Agent Section
a. Removal.
Organizational maintenance personnel are authorized to
(1) Purge the air in the pressure system
replace the parts that make up the pipe and cap
assembly.
(2) Unlace one side of the carrier pack.
a. Removal.
(3) Disconnect the quick-disconnect coupling
(1) Purge the air in the pressure system
half (3, Fig. 4-5) on each hose assembly (2) from the
pipe and cap assembly (4).
(para 4-10a).
(4) Disconnect the diffusion tube nut (8) from
(2) Disconnect the quick-disconnect coupling
the safety valve adapter (9) and remove the pressure
half (2, Fig. 4-6) on the hose assembly from the pipe
regulator and attaching parts.
and cap assembly (1).
(5) Disconnect the hose assembly (2) from
(3) Unscrew the pipe and cap assembly (1)
the safety valve adapter (9).
from the top of the agent tank.
b. Installation.
b. Disassembly.
(1) Connect each hose assembly (2) to the
(1) Unscrew the pipe (8) and pipe cap (9)
safety valve adapter (9).
from the connector (3).
(2) Connect the diffusion tube nut (8) to the
(2) Remove preformed packing (7) from tank
safety valve adapter (9).
cap.
(3) Cross the open ends of both hose
(3) Using ring retaining
pliers,
remove
retaining ring (6) from connector (3).
assemblies and connect the quick-disconnect coupling
halves (3) to opposite pipe and cap assemblies (4).
(4) Remove
preformed
packing
(4)
from
(4) Lace the carrier pack (8, Fig. 4-10) to the
connector.
frame (10).
(5) Remove the pipe cap (9) from the pipe (8).
4-30. Pressure Tank and Valve Assembly
c. Cleaning.
Organizational maintenance personnel are authorized to
(1) Clean the threads on the tank cap (5).
replace the pressure tank and valve assembly.
(2) Clean the holes in the pipe cap (9).
a. Removal.
(3) Clean the pipe (8) and pipe cap (9)
(1) Purge the air in the pressure system
threads.
d. Assembly and Installation.
(2) Remove the pressure tank and valve
(1) Screw the pipe cap (9) on the pipe (8) and
assembly (Fig. 4-9) (para 4-10b).
tighten.
b. Installation. Install the pressure tank and valve
(2) Install a new preformed packing (4) on the
assembly (para 4-10c).
connector (3).
4-31. Valve Shaft Assembly
(3) Insert the connector (3) through the hole
in the tank cap (5). Install the retaining ring (6) on the
Organizational maintenance personnel are authorized to
connector (3).
replace the valve shaft assembly.
(4) Screw pipe into connector and tighten.
a. Removal.
(5) Install a new preformed packing on the
(1) Purge the air in the pressure system
tank cap.
(6) Insert the pipe and cap assembly in the
(2) Remove the pressure tank and valve
agent tank. Handtighten the tank cap.
assembly (para 4-10b).
4-29. Hose Assemblies, Pressure Section
(3) Secure firmly the pressure tank before
removing any parts.
Organizational maintenance personnel are authorized to
replace the hose assemblies.
4-21
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