Section VI. TROUBLESHOOTING

TM 3-1040-214-12

Table 4-1. Preventive-Maintenance Checks and Services-Continued

Organizational Maintenance Category

Monthly Schedule

Sequence

Paragraph

Item to be inspected

Procedure

reference

GENERAL

Exposed-metal painted surfaces on dis-

Inspect painted surfaces for corrosion, rust, and chipped

para 4-16

perser.

paint. Clean and repaint surfaces as required.

and 4-17.

ACCESSORY GROUP

Publications -----------------------------------

See that a copy of TM 3-1040-214-12 is packed with

the equipment.

Gloves ------------------------------------------

Inspect gloves for tears and deterioration. Replace

gloves as required.

REPAIR PARTS

Connector, safety heads, check valves

Inspect for damage and deterioration. Replace parts as

Fig. 4-2.

preformed packing, washers, and

authorized.

rubber tube.

Section VI. TROUBLESHOOTING

4-21. General

4-22. Troubleshooting

Table 4-2 lists troubleshooting procedures

for

Report all malfunction beyond

the scope of

organizational maintenance personnel.

organizational

maintenance

direct

support

maintenance personnel.

Table 4-2. Troubleshooting

Item

No.

Malfunction

Probable cause

Corrective action

Agent leaks at connection be-

Loose connection between gun and

Tighten connection.

tween gun and hose cou-

hose.

pling.

Agent leaks at trigger or

Rubber tube defective -------------------------

Replace rubber tube (para 4-24).

locknut.

Agent leaks at agent delivery

a. Quick-disconnect coupling half not

Disconnect quick-disconnect coupling

pipe coupling and quick-

installed properly on delivery

half and connect correctly.

disconnect coupling half on

pipe coupling.

hose assembly.

b . Preformed packing in quick-discon-

Replace preformed packing (para 4-27b).

nect coupling half missing or

damaged.

c. Defective quick-disconnect coupling

Replace quick-disconnect coupling half

half.

(para 4-27a).

Agent leaks between pipe and

a. Tank cap loose------------------------------

Handtighten tank cap.

cap assembly and agent

b . Tank cap threads dirty---------------------

Clean threads.

tank.

c. Preformed packing rings missing

Replace preformed packing rings

or damaged.

(para 4-28).

d. Damaged pipe and cap assembly------

Replace pipe and cap assembly

para 4-28).

Agent leaks between pipe

a. Quick-disconnect coupling half not

Disconnect quick-disconnect coupling

and cap assembly and hose

installed properly on pipe and

half and connect correctly.

assembly quick-disconnect

cap connector.

half.

b . Pipe and cap connector defective ------

Replace connector (para 4-28).

No discharge of agent when

a. Pressure tank valve closed --------------

Fully open pressure tank valve (turn

trigger is pressed.

handle counterclockwise).

b . Agent tank empty---------------------------

Fill tanks with agent (para 4-8).

c. Insufficient pressure in pressure

Replace pressure tank with a fully

tank.

charged pressure tank (para 4-10).

Trigger or trigger safety in-

a. Dirt accumulated under trigger

Clean.

operative.

safety.

b . Safety catch improperly adjusted ------

Adjust safety catch (para 4-25).

4-16