TM 55-2210-224-34
3-26. GROUND RELAY
This task covers:
a.
Removal
c.
Cleaning
e.
Repair
g.
Installation
b.
Disassembly
d.
Inspection
f.
Assembly
h.
Test
INITIAL SETUP
Tools
Material/Parts
Tool kit SC4940-97-CL-E12
Drycleaning solvent (Item 34, Appendix B)
Test Equipment
Variable dc voltage supply
REMOVAL
WARNING
· 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.
· 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.
1. Open electrical equipment cabinet door and set
battery switch to OPEN. Make sure electrical wires
are labeled with wire numbers or polarity signs.
Tag and disconnect wires from relay assembly.
2. Remove two capscrews (1), lockwashers (2), and
flat washers (3).
3. Remove two machine screws (4), flat washers (5),
and ground relay (6).
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