c. Follow steps (1) thru (9) below for electrical
component installation in 280 shelter, unit 1.
existing screws. Install ground rod and secure in hanger
Electrical power to shelter should be
(20) Position pinch bar (5120-00224-1384)
disconnected during the installation
inside door to right by shelf support (7551834). (See
of wiring modifications.
temporary lighting connected to an
strap (7550588-6). Pass the retaining strap around the
outside power source.
(1) Remove three fluorescent lighting tubes
(21) Position mounting bracket of fire
on left side of shelter and store in a protected location.
extinguisher (4210-00-555-8837) on existing rear right
wall sheet metal bracket in accordance with figure 8.
(2) Remove cover from power distribution
Mark and drill four 0.22-in. diameter holes through both
brackets being careful not to puncture the inner wall, in
Secure fire extinguisher
(3) Remove raceway cover clips and pry out
bracket, using four #10 x 5/8-in. pan head machine
cover sections under three fluorescent lighting tubes.
Leave fluorescent lighting tube holders in place.
(MS35338-43), and four #10 hex nuts (MS35649-202).
Install fire extinguisher in mounting bracket (fig. 10).
In order to remove some of the
raceway cover clips, it may be
existing holder on rear wall in accordance with figure 10.
necessary to loosen retaining screws
(23) Position MGDS attachment (3460-00-840-
1010) on floor in accordance with figure 2. Using strap
(4) Disconnect wires no. 36 (BR), 41 (GY), 46
loop (MS51939-3) as a template, mark and drill eight
(WH), and 51 (G) from existing duplex receptacle
0.22-in. diameter holes through top of box as shown in
marked J7J8. Dead end wires by installing four splice
figure 21. Secure four strap loops (MS519393), using
conductors (wire nuts) (3M "HYFLEX" No. 212) on ends
eight #10 x 1-3/4-in. countersunk head machine screws
of the four wires. Install a tiedown strap (MS33671)
(MS35190-278), eight #10 flat washers (AN970-3), eight
around main wire harness bundle in area just before
receptacle wiring branches off. Fold back the dead-
(MS35649-202). Install four 5/16x 2-31/32-in. shoulder
ended wires under wire clip existing in raceway in
eyebolts (MS51937-2) and four 5/16-in. hex nuts
(MS51967-5) into floor on left and right side of aisle as
(5) Remove and discard
attachment with four 92-in. retaining straps (7550588-7)
receptacle and cover from raceway,
laced through shoulder eyebolts and strap loops in