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 TM 5-1940-277-20
TM 1940-20/2
Release mounting lock by pushing lever (1) to left.
2.
Remove light assembly (2) from mounting bracket (3) on mast.
3.
4.
Unscrew collar (4) from bottom of light assembly.
5.
Remove lamp socket assembly (5) from lens base (6).
Remove bulb (7) from socket (8) by pushing in, turning one-quarter turn counterclockwise and pulling out.
6.
7.
Using cross tip screwdriver remove two screws (9) from top of socket (8).
Using fingers unscrew locking nut (10) and slide down wire (11) toward mast.
8.
9.
Uncoil plastic spiral wrapping (12) from around wire (11) and retain for reinstallation.
10.
Slide rubber grommet (13) and two brass washers (14) down wire from socket base (15).
11.
Slide socket base (15) down wire toward mast (16).
12.
Using flat tip screwdriver loosen two terminal screws (17) holding wires (18).
13. Remove wires (18) from lamp socket terminals (19).
INSTALL:
1.
Unscrew collar (4) and remove lamp socket base (15) from lens base (6).
2.
Using cross tip screwdriver remove two screws (9) and lamp socket (8) from lamp socket base (15).
3.
Remove locking nut (10), rubber grommet (13) and two brass washers (14) from lamp socket base (15) and slide
onto wires (11) in correct order.
4.
Insert wires (11) into lamp socket base (15).
Insert stripped ends of wires (11) into lamp socket terminals (19).
5.
Using flat tip screwdriver tighten terminal screws (17) securing wires (11) in terminals.
6.
7.
Slide lamp socket base (15) out to lamp socket (8).
Aline screw holes (20) in base (15) and top half of socket (6).
8.
Insert two screws (9) and tighten with cross tip screwdriver.
9.
10.
Slide rubber grommet (13) and two brass washers (14) into lamp socket base (15).
11.
Rewind plastic spiral wrapping (12) around wire (11).
12.
Slide locking nut (10) to socket base (15) and screw in finger tight.
Place bulb (7) in lamp socket (8) push down and turn onequarter turn clockwise to secure.
13.
Insert lamp socket assembly (5) into lens base (6).
14.
Screw collar (4) onto light base.
15.
16.
Install light assembly (2) on mast mounting bracket (3) and lock in place using locking level (1).
17.
Erect mast (refer to paragraph 3-8).
3-209
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