5.6 AUXILIARY CONTACTOR WITH SEMICONDUCTOR DEVICE MAINTENANCE.

Performed after any removal/Installation operation

TM-9-6115-668-13 5Kw 28VDC Auxiliary Power Unit (APU) MEP 952B Manual
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TM 9-6115-668-13 5.6 AUXILIARY CONTACTOR WITH SEMICONDUCTOR DEVICE MAINTENANCE. This task covers: a. Removal b. Installation Tools Equipment Conditions General Mechanic’s Tool Kit (item 2, appendix B) Automotive Fuel and Electrical System Repair, Tool Kit (item 3, appendix B) Materials/Parts Reference Generator Set 150 kW shut down, paragraph 2.5.2 Cable ties (item 10, appendix E) WARNING Disconnect the negative battery cable first and then the positive bat- tery terminal cables. Failure to observe this warning could result in se- vere personal injury or death. C A U T I O N Tag all cables prior to removal to ensure correct connection of the cables during installation. REMOVAL 1. Open flap (2, figure 5-19) on unit hood assembly (1). 2. Open front panel (4) on control cabinet assembly (3) and secure with prop (5). N O T E Removal procedure or auxiliary contactor with semiconductor device K2 (35)/V13 (29), K4 (39)/V14 (40), K11 (49)/V7 (44), K12 (50)/V8 (45), K14 (59)/V9 (46), K21 (57)/V12 (58), K23 (52)/V10 (59), K24 (46)/V11 (60) is the same as for auxiliary contactor K2 (35) with semiconductor device V13 (29), described below. 3. Record labeling and position of cables (26) to auxiliary contactor K2 (35) and cable (34) to semicon- ductor device V13 (29) at upper terminals (27), loosen screws (28), and remove cables (34) and (26). 4 . Record labeling and position of cables (23) to auxiliary contractor K2 (35) and cable (33) to semi- conductor device V13 (29) at lower terminals (30) of auxiliary contractor K2 (35), loosen screws (31), and remove cables (32) and (33). 5-97

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