TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 3–88 3–3 TROUBLESHOOTING — CONTINUED h. CAB LIGHTING SYSTEM The cab lighting system consists of three dome light assemblies and internal lighting for the M15 elevation quadrant, M117/M117A2 panoramic telescope, and M118A2/M118A3 elbow telescope. Power for these lighting components is routed from the contact arm assemblies through the gunner’s selector switch box assembly. LEGEND: 1. Electrical contact arm assemblies 2. Gunner’s selector switch box assembly 3. M117/M117A2 panoramic telescope 4. M118A2/M118A3 elbow telescope 5. M15 elevation quadrant 6. Dome light assemblies 147A 147B 147C 147 M118A2/M118A3 ELBOW TELESCOPE M117/M117A2 PANORAMIC TELESCOPE M15 ELEVATION QUADRANT GUNNER’S SELECTOR SWITCH BOX 100 100 100 DOME LIGHT (3) 138 PICTORIAL VIEW ELECTRICAL DIAGRAM 2 1 3 1 6 1 4 6 1 5 6 CIRCUIT BREAKER 100