TM-9-2350-311-20-2
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS
DECEMBER 1993
TM-9-2350-311-20-2 - Page 221 of 828
TM 9–2350–311–20–2
3–109
A
B
C
E
F
G
H
J
K
L
M
N
P
A
B
C
D
E
F
G
H
J
K
L
M
N
P
D
1.
Reconnect wire 143 at contact arm assembly
quick-disconnect.
2.
Place one multimeter lead in socket N of power
system wiring harness connector and other lead
to ground.
3.
Check for continuity.
Is continuity present?
yes
no
E
CONTINUED ON NEXT PAGE
CONTINUED FROM STEP C
Repair or replace wire
labled GND (para 8–15).
1.
Reconnect wire 142 at contact arm assembly
quick-disconnect.
2.
Disconnect wire 143 from contact arm assembly
quick-disconnect.
3.
Place one multimeter lead in wire 143
quick-disconnect and other lead in socket C of
power system wiring harness connector.
4.
Check for continuity.
Is continuity present?
yes
no
+
POWER SYSTEM WIRING
HARNESS CONNECTOR
SOCKET C
–
POWER SYSTEM WIRING
HARNESS CONNECTOR
SOCKET N
+
CONTACT ARM
ASSEMBLY
WIRE 143
Repair or replace wire 143
(para 8–15).
–
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