TM 9-2350-230-12
TABLE 3-3. IMMEDIATE ACTION IN CASE OF FAILURE TO FIRE-CAL..50 MACHINE GUN M42,HB
STEP
PROCEDURE
FIG/ITEM
COOL WEAPON
When a stoppage occurs (failure to fire) before completing 150 rounds,
perform operations listed below.
1
Wait 5 seconds in the event of a hangfire.
WARNING: Keep weapon trained on target.
2
Retract bolt and push retracting slide handle forward.
3
Depress bolt latch release to return bolt to battery position.
4
Depress trigger and attempt to fire.
5
If weapon still fails to fire, wait 5 seconds, retract bolt (engage with
bolt latch) and return handle forward.
NOTE: If bolt latch release is in a locked (depressed position), the
bolt will be forward and another round could be chambered.
6
Open cover assembly and remove belted ammunition
WARNING: Inspect to insure weapon is clear.
7
Check to determine cause of stoppage; refer to troubleshooting procedure
(table 5-1, steps 43 through 49).
HOT WEAPON
When stoppage occurs (failure to fire) after firing approximately 200
rounds, either spasmodically or continuously within 2 minutes, per-
form the operations listed below:
WARNING: The danger of a cook-off exists when barrel is hot.
Immediate action must be applied within 10 seconds. Keep weapon
trained on target, remain clear of barrel and do not open cover
during this period.
8
Follow steps 1 and 2 above.
9
Attempt to fire by depressing bolt latch release and trigger at same time. 3-8/D
Weapon should fire automatically.
10
Follow steps 5 through 7 above.
11
If the bolt cannot be retracted when applying immediate action or a
misfire occurs after intentional cessation of firing and bolt is forward
at time trigger is pressed, the bolt must remain locked in battery
position (do not open the cover assembly). ALLOW THE WEAPON TO
COOL AT LEAST 5 MINUTES to guard against a cook-off. After wait-
ing specified time (5 minutes), follow steps 1 through 7 above.
3-3
