CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS
TM 9-2350-256-20
2-19 ELECTRICAL TROUBLESHOOTING-Continued
RIGGER'S LIGHTS AND FRONT SIGNAL LIGHT--Continued
WARNING
Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry contacts a metal
surface a direct short may result in instant
heating of tools, damage to equipment, and
injury or death to personnel.
A
Loosen four screws (1) and remove cover (2). Remove
bulb (3). Place red lead of multimeter in socket and
black lead to ground. Turn MASTER switch on,
UNLOCK and turn main lighting switch to STOPLIGHT
position, rigger's B.O. SELECTOR to SERVICE
position, and check for voltage. Turn MASTER and
B.O. SELECTOR switches OFF. If voltage is present,
replace lamp (see paragraph 6- 27). If voltage is not
present, go to step B.
B
Install bulb (3), cover (2), and tighten four screws (1).
Disconnect wire 17 from failed rigger's service light.
Place red lead of multimeter in wire 17 and black lead to
ground. Turn MASTER switch on, UNLOCK and turn
main lighting switch to STOP LIGHT position, rigger's
B.O. SELECTOR to SERVICE position, and check for
voltage. Turn MASTER, main lighting, and rigger's B.O.
SELECTOR switches OFF. If voltage is present,
replace rigger's service light assembly (see paragraph 6-
27). If voltage is not present, go to step C.
2-320
