3-27. WHEEL SLIP RELAY
This task covers:
Tool kit SC4940-97-CL-E12
Drycleaning solvent (Item 34, Appendix B)
Variable dc voltage supply
· 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 wheel slip relay (4).
2. Remove two capscrews (1), lockwashers (2), and
flat washers (3). Remove wheel slip relay (4).