3-31. FIELD SHUNT RESISTOR
This task covers:
Tool kit SC4940-97-CL-E12
· High voltage is used in the operation of equip-
ment. Do not be misled by the term LOW
VOLTAGE. Potentials as low as 50 volts may
· Remove rings, bracelets, wristwatches, and
locomotive. Jewelry can catch on equipment
and cause injury, or may short across an
electrical circuit and cause severe burns or
The six resistors are removed and installed in a
1. Open electrical equipment cabinet door and set
battery switch to OPEN.
Tag and disconnect electrical leads.
Remove four capscrews (1), flat washers (2), and lockwashers (3). Remove reverser frame from locomotive.
Remove four nuts (4), flat washers (5), lockwashers (6), flat washers (7), and capscrews (8) and remove shunt (9).
Remove two nuts (10), spacers (11) and (12), insulator-resistor assembly (13), two spacers (14), springs (15), and
flat washers (16) from mounting board (17). Separate two insulators (18) from resistor (19).