TM 9--2350--292--20--1
0152 00--5
GRENADE LAUNCHER FAILS TO OPERATE PROPERLY. SOME OR ALL
TUBES FAIL TO OPERATE. ALL OTHER SYSTEMS OPERATE PROPERLY --
CONTINUED
0152 00
J
Is 24 V dc present at all four checks?
CONTINUED FROM STEP I
no
yes
CONTINUED ON NEXT PAGE
1. Reconnect harness 4W108 to leads 1W112--1
and 1W112--2.
2. Disconnect leads 1W112--1 and 1W112--2 from
grenade launchers.
3. Turn MASTER switch and ARM SMOKE switch
ON (TM 9--2350--292--10). Press and hold both
firing switches.
4. Place multimeter red lead in leads 1W112--1
and 1W112--2 launcher connector sockets A
and C (one at a time) while holding black lead
to ground. Check for voltage.
5. Release firing switches and turn MASTER
switch and ARM SMOKE switch OFF
(TM 9--2350--292--10).
Repair (WP 0290 00) or re-
place (WP 0673 00) lead
1W112--1 or 1W112--2
(whichever is faulty). Verify
fault is corrected.
K
Is continuity present at both checks?
no
yes
Place one multimeter lead in lead 1W112--1 and
1W112--2 socket B (one at a time) and other lead to
ground. Check for continuity.
Repair (WP 0290 00) or re-
place (WP 0673 00) ground
lead of 1W112--1 or 1W112--2
(whichever is faulty). Verify
fault is corrected.
FORWARD