TM-9-2350-277-20-1

CARRIER M113A3, M577A3, M1059A3, M1064A3, M1068A3 AND M58

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL VOLUME 1 OF 6

TM-9-2350-277-20-1 - Page 274 of 855

TM 9-2350-277-20-1

SMOKE GRENADE LAUNCHER(S) MALFUNCTION (M113A3

AND M1059A3 ONLY)

0045 00

INITIAL SETUP:

Maintenance Level

Unit

Tools and Special Tools

General Mechanic’s Tool Kit (WP 0926 00, Item 65)

Multimeter (WP 0926 00, Item 30)

Jumper Wire

Personnel Required

Mechanic

Helper (H)

Equipment Condition

Engine stopped (TM 9-2350-277-10)

Carrier blocked (TM 9-2350-277-10)

Power plant access door open (TM 9-2350-277-10)

Harness 12313235 removed from launcher arming/firing

unit (WP 0366 00)

T

1.

Does either launcher operate properly?

TN

GO TO

BY

(PAGE 0045 00-3)

Y

1.

Remove harness 12313237 launcher plug (1) from

failing right launcher.

2.

Remove harness 12313237 circuit 7 (2) and 799 plugs

(3) from harness 12313236 (right launcher) or harness

12313235 (left launcher) jacks (4).

3.

Measure resistance between harness 12313237 launcher

plug (1) pin A (5) and plug 7 (3) circuit.

4.

Measure resistance between harness 12313237 launcher plug

(1)pinC(6)andcircuit7plug(2)

.

5.

Does multimeter read 0 ohms for both measurements?

YN

1.

Replace harness 12313237 for

left or right grenade launcher

(WP 0366 00).

2.

Verify no faults found.

004500-1

Change 5