TM-9-2350-277-20-1 Unit Maintenance Manual Volume 1 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-1 MASTER SWITCH ON INDICATOR DOESN’T LIGHT 0048 00 INITIAL SETUP: M a i n t e n a n c e L e v e l Unit T o o l s a n d S p e c i a l T o o l s General Mechanic’s Tool Kit (WP 0926 00, Item 65) Multimeter (WP 0926 00, Item 30) P e r s o n n e l R e q u i r e d Unit Mechanic 63T10 Helper (H) R e f e r e n c e s See your -10 E q u i p m e n t C o n d i t i o n Engine stopped (see your -10) Carrier blocked (see your -10) T 1. Remove MASTER SWITCH ON indicator cover lens (1) gasket (2), bulb (3), and gasket (4). 2. Check continuity between bulb center contact and bulb base. 3. Read multimeter. Is there continuity? YES NO TN 1. Replace master switch bulb (WP 0286 00). 2. Verify no faults found. Y 1. Turn MASTER SWITCH to ON. 2. Is BATTERY/GENERATOR indicatorin the green zone? YES NO GO TO BY (PAGE 0048 00-3) 0048 00-1