TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
Page 178 of 828
TM 9–2350–311–20–2 3–67 Go to step M. 1. Turn MASTER switch to OFF. 2. Reconnect wire 100 to power relay box assembly. 3. Disconnect wire 104 at power relay box assembly. 4. Turn MASTER and CAB POWER switches to ON. 5. Ensure that hydraulic pressure in power pack main accumulator assembly is below 925 psi (6378 kPa). 6. Place red multimeter lead in power relay box assembly connector for wire 104 and black lead to ground. 7. Check for voltage. Is battery voltage present? I CONTINUED ON NEXT PAGE POWER RELAY BOX ASSEMBLY WIRE 104 CONTINUED FROM STEP H yes no + – yes no Repair or replace wire 100 (para 8–4). If malfunction persists, clean contact board segments and con- tact arm assemblies (Chap- ter 9).