TM 3-1040-262-13&P
Table 4-2 Organizational Troubleshooting-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2 Defective packing.
Step 3. Defective discharge hose connections.
3. AGENT OR AIR LEAK FROM AIR PRESSURE ASSEMBLY
Step 1. Preformed packings damaged or missing.
Step 2. Quick-disconnect male coupling halves damaged or loose.
Step 3. High pressure rupture disk in nipple assembly is ruptured or it is loose.
Replace air cylinder.
Report defective air cylinder to direct support maintenance.
Step 4. Safety relief valve is loose or ruptured.
4. LEAKAGE BENEATH WING NUT ON AGENT CONTAINER ASSEMBLY
Step 1. Loose wing nut.
Hand tighten wing nut.
Step 2 Damaged threads on either the wing nut or the agent container.
Step 3 Defective preformed packing.
Section V. TESTING AND SERVICING
g. Squeeze the trigger and fire a short burst.
4-10.
Pressure Regulator Test
Release the trigger and observe the inline pressure
a.
check gage reading. Reading should be 180 ( 20)
h).
psig.
h. Repeat squeezing the trigger and firing a short
b. Disconnect the female quickdisconnect
burst to check the gage reading.
coupling half (8, fig. 1-4) from the male quickdisconnect
i.
coupling half (7).
c. Install the inline pressure check gage assembly
resistance is felt to stop the flow of high pressure air to
the pressure regulator assembly.
(fig.4-2) to the female quickdisconnect coupling half (8,
j.
Release the pressure from the agent container
fig.1-4).
d. Connect the inline pressure check gage
by squeezing the trigger.
k. Replace the faulty regulator assembly, if
assembly to the male quickdisconnect coupling half (7).
e. Check that trigger is released and the drain
assembly to direct support maintenance.
cock (16) is closed.
f.
Rotate
the
grip
knob
counterclockwise (in the direction marked by arrow and
the work OPEN on the grip knob) until resistance is felt.
Change 1 4-4.1