TM 55-2210-223-34
TO 45A2-2-14-22
3-26. GROUND RELAY
This task covers:
a. Removal
c.
Cleaning
e.
Repair
g.
Installation
b. Disassembly
d.
Inspection
f.
Assembly
f.
Test
INITIAL SETUP
Tools
Material/Parts
Tool kit SC 4940-97-CL-E12
Dry-cleaning solvent (Item 30, Appendix B)
Test Equipment
Multimeter 6625-01-139-2512
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.
NOTE
If ground relay is suspected of being
defective perform steps 19 and 20 before
removal.
1.
Set battery switch to OPEN position. Tag and
disconnect wires from relay assembly.
2.
Remove two screws (1), lockwashers (2), flat
washers (3), and ground relay (4).
3-85
