TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 3–66 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. Turn MASTER and CAB POWER switches to OFF. 2. Leave jumper wire in place. 3. Disconnect wire 645 at power relay box assembly. 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? G yes no Repair or replace wire 645 (para 8–6). H POWER RELAY BOX ASSEMBLY WIRE 645 POWER RELAY BOX ASSEMBLY WIRE 100 – + – + CONTINUED FROM STEP F CONTINUED ON NEXT PAGE 1. Turn MASTER and CAB POWER switches to OFF. 2. Ensure hydraulic pressure in power pack main accumulator is below 925 psi (6378 kPa). 3. Remove jumper wire from cannon plug and reconnect cannon plug to pressure switch. 4. Reconnect wire 645 to power relay box assembly. 5. Disconnect wire 100 at power relay box assembly. 6. Turn MASTER switch to ON. 7. Place red multimeter lead in wire 100 connector and black lead to ground. 8. Check for voltage. Is battery voltage present?