TM-9-2350-247-20-3 Unit Maintenance Manual Volume 3 M548A1 M548A3 Tracked Cargo Carrier Download
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TM 9-2350-247-20-3 REPLACE NBC CIRCUIT BREAKER AND RELAY (M548A3) — Continued 0530 00 6. Remove screw (24), lock washer (25), one end of jumper (26), and washer (27) from circuit breaker (23). 7. Remove nut (28), washer (29), jumper (26), and screw (30) from bus bar (31). 8. Remove two nuts (32), lock washers (33), washers (34), screws (35), ground lead (18), and relay (36). Discard lock washers. 9. Remove two nuts (37), screws (38), and circuit breaker (23) from panel. TEST AND INSPECTION 1. Check resistance through circuit breaker. Reading should be 0 ohms. If reading is infinity, replace defective circuit breaker. 2. Check resistance through relay. Place multimeter probes on terminals X1 and X2. Reading should be approximately 0 ohms. If reading is infinity, replace relay. Place multimeter probes on terminals A1 and A2. Reading should be infinity. If reading is 0 ohms, replace relay. 0530 00-2