TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 Change 2 3–91 h. CAB LIGHTING SYSTEM — CONTINUED (2) M118A2/M118A3 ELBOW TELESCOPE LIGHT IS OUT, BUT ALL OTHER LIGHTS OPERATE. INITIAL SETUP Test Equipment Multimeter (item 6, Appx H) Tools Artillery and turret mechanic’s tool kit (SC 5180–95–CL–A12) Equipment Condition Vehicle MASTER switch to OFF (TM 9–2350–311–10) 1. Check ground lead for good connection. 2. Place red multimeter lead in one socket and black lead in ground socket of wire 147A. 3. Check for voltage. Is battery voltage present? Repair ground lead (para 8–3). 1. Disconnect wire 147A at M146 mount. 2. Turn MASTER switch to ON. 3. Place red multimeter lead in each socket of wire 147A and black lead to ground. 4. Check for voltage. Is battery voltage present at one socket only? yes no A yes no B Replace wire 147A (para 8–3). CONTINUED ON NEXT PAGE WIRE 147A WIRE 147A + – + – M146 MOUNT