TM 55-2210-224-34
3-31. FIELD SHUNT RESISTOR
This task covers:
a. Removal
b. Test
c. Installation
INITIAL SETUP
Tools
Tool kit SC4940-97-CL-E12
REMOVAL
WARNING
· 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
cause death.
· 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.
NOTE
The six resistors are removed and installed in a
similar manner.
1. Open electrical equipment cabinet door and set
battery switch to OPEN.
2.
Tag and disconnect electrical leads.
3.
Remove four capscrews (1), flat washers (2), and lockwashers (3). Remove reverser frame from locomotive.
4.
Remove four nuts (4), flat washers (5), lockwashers (6), flat washers (7), and capscrews (8) and remove shunt (9).
5.
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).
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