TM 55-2210-224-12
4-33. STEP, COWLING, GAGE, AND CAB ELECTRICAL EQUIPMENT CABINET LIGHTS AND WIRING
This task covers:
a.
Test
b.
Repair
c.
Inspection
d.
Removal
e.
Installation
INITIAL SETUP
Tools
Material/Parts
Tool kit SC4940-97-CL-E16
Electrical tape (Item 26, Appendix E)
TEST
WARNING
Remove rings, bracelets, wristwatches, and neck chains before working around the locomotive.
Jewelry can catch on equipment and cause injury, or may short across an electrical circuit and
cause severe burns or electrical shock.
High voltage is used in the operation of equipment. Do not be misled by the term LOW
VOLTAGE. Potentials as low as 50 volts may cause death.
1.
Open electrical equipment cabinet door and set battery switch to CLOSE.
2.
Remove bulb and use a multimeter to check to see if voltage is reaching the light.
3.
Use multimeter and check for voltage across switch.
4.
Open electrical equipment cabinet door and set battery switch to OPEN.
INSPECTION
5.
Inspect electrical wiring for disconnected and broken wires and damaged insulation.
REMOVAL
6.
Set the switch of the affected light to OFF.
7.
Remove light bulbs as follows:
a.
Step. Remove light bulb (1).
b.
Cowling. Loosen screw (2) and remove wire guard (3). Remove glass globe (4). Remove light bulb (5).
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