5-7 SWITCH BOX ASSEMBLY MAINTENANCE.

TM-9-6115-662-13P Power Unit Diesel Engine Driven 1 Ton Trailer Mounted 5 Kw 60 Hz PU-797 Manual
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TM 9-6115-662-13&P 5-7 SWITCH BOX ASSEMBLY MAINTENANCE. This task covers: a. Replacement b. Test INITIAL SETUP Tools Equipment Conditions Tool Kit, General Mechanic’s (item 1, appendix B) Reference Multimeter, AN/PSM-45 (item 2, appendix B) Both generator sets shut down, para 2-5.3.1. Trailer support devices are Materials/Parts lowered, paragraph 2-3.2.1. Washers, Lock REPLACEMENT Refer to paragraph 4-12 to remove and install switch box assembly. TEST 1. Disassemble switch box assembly for test as follows: a. b. c. Remove 21 screws (1, figure 5-11), flat washers (3), and lock washers (2) that secure the switch box cover (4) to the switch box assembly. CAUTION The control panel connector P3 is connected to connector J4. Movement of the switch box cover is limited. To prevent damage to control panel wiring harness, use caution removing switch box cover. Failure to observe this caution can result in equipment damage. Carefully position switch box cover (4) in front of switch box. Disconnect P3 (8) from J4 (11) and set switch box cover (4) out of the way. 2. Remove two lamps for Unit A and two lamps for Unit B from switch box control panel. 5-15

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