TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
Page 175 of 828
TM 9–2350–311–20–2 3–64 3–3 TROUBLESHOOTING — CONTINUED e. CAB HYDRAULIC SYSTEM — CONTINUED (1) POWER PACK HYDRAULIC PUMP MOTOR DOES NOT OPERATE, BUT CAB LIGHTING SYSTEM OPERATES NORMALLY. — CON- TINUED 1. Close gunner’s selector switch box assembly. 2. Reconnect harness at J2 connector of gunner’s selector switch box assembly. 3. Disconnect wire 625A–645 from quick- disconnect at gunner’s selector switch box assembly. 4. Place red multimeter lead in wire 625A–645 and black lead to ground. 5. Turn MASTER and CAB POWER switches to ON. 6. Check for voltage. Is battery voltage present? Repair or replace wire 625A–645 from quick-dis- connect to gunner’s selec- tor switch box assembly (para 8–7). yes no WIRE 625A–645 –+ CONTINUED FROM STEP B CONTINUED ON NEXT PAGE WIRE 645 _ + C D 1. Turn MASTER and CAB POWER switches to OFF. 2. Reconnect wire 625A-645 to quick-disconnect at gunner’s selector switch box assembly. 3. Disconnect wire 645 from quick-disconnect at pressure switch. 4. Turn MASTER and CAB POWER switches to ON. 5. Place red multimeter lead in wire 645 and black lead to ground. 6. Check for voltage. Is battery voltage present? PRESSURE SWITCH