Quantcast Install Boarding Ladders, Bridge, and Rear Platform - TM-10-6640-239-13_96

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TM 10-6640-239-13 2-41 d. Install Boarding Ladders, Bridge, and Rear Platform.  Remove Bridge (3) from bottom of rear platform on Mod Lab B (2) before lowering rear platforms on Mod Lab A (1) and Mod Lab B.  Remove three boarding ladders from their storage racks beneath Laboratory.  Place one three-step ladder at end of each bridge and the other three-step ladder at laboratory entrance doors.  Place four-step ladder at front curbside mechanical room doors. Raise ECU maintenance platforms by removing two center key and retaining pins.  Lift platform to operating position and reattach cable with pins and cotter key. e. Drain Hose Connection.  Connect drain hoses to sink deck drain located adjacent to curbside storage box, and to forward deck drain located on roadside beneath mechanical rooms.  Dig a drainage ditch or sump, and place ends of the drainage hoses in it. f. Laboratory Grounding and Power Cables.  The following procedure is used to properly ground each Laboratory. WARNING Do  not  connect  Power  Distribution  Module  power  cable  to  Generator  set  until  both Laboratories and Power Distribution Module are properly grounded.  Failure to comply with this warning could result in serious injury or death. (1) Remove grounding rods, driver/pullers, and grounding cables from Mod Lab A (1) roadside and Mod Lab B (2) curbside storage boxes. (2)    Select an area as close possible to Laboratory input power panels. (3) Attach first grounding rod (1, figure 2-13) and coupling (2) to driver/puller rod (4).  Ensure driver/puller rod and grounding rod are fully threaded into coupling. NOTE Before driving grounding rod, ensure collar is hand tight against coupling. (4) Hand tighten collar (4) against coupling (2). (5) Place driver/puller (5) on driver/puller rod (3) and drive grounding rod (1) into ground approximately 30 inches. CAUTION Do   not   allow   grounding   rod   to   rotate   when   disconnecting   driver/puller   rod   from grounding rod.  Grounding rod sections must be kept tightly screwed together to ensure a good electrical ground. (6) Remove driver/puller rod (3) and driver/puller (5) from first grounding rod (1) section. (7) Attach second section of grounding rod to first section of grounding rod and attach driver/puller rod (3) to second section and drive into ground. (8) Repeat step 7, driving third section of grounding rod into ground until only about 12 inches (30.5 cm) of rod is above ground. (9) Remove driver/puller (5) and driver/puller rod (3) from third section of grounding rod. (10)  Slide grounding cable clamp over grounding rod. (11)  Attach grounding cable to grounding rod with grounding clamp. (12)  Attach grounding cable to power panel GROUND. (13)  Repeat steps 2 through 12 for the other Laboratory.


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