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 206 of 828

TM 9–2350–311–20–2
3–94
Change 2
3–3
TROUBLESHOOTING
— CONTINUED
h.
CAB LIGHTING SYSTEM
— CONTINUED
(3)
M145/M145A1 TELESCOPE MOUNT AND
M117/M117A2 PANORAMIC TELESCOPE
LIGHTS ARE OUT, BUT ALL OTHER LIGHTS
OPERATE. — CONTINUED
Wiring in M145/M145A1
telescope mount is defec-
tive. Notify support mainte-
nance.
Verify fault is corrected.
Continue normal opera-
tions.
Replace lamp (para 18–3 for M145/M145A1
telescope mount or para 18–5 for M117/M117A2
panoramic telescope).
Does lamp light?
C
yes
no
CONTINUED FROM STEP B
END OF TASK


Back to Top