o. Traction Motor Support Bearing Lubricators. Inspect for proper operation and
lubricate as required.
p. Traction Motors and Traction Generators. Blow out with clean dry air; inspect
commutator, brush holders, insulators, bands, and connections and resurface commutator when
NOTE: AN ACTIVITY THAT DOES NOT HAVE THE CAPABILITY TO REPAIR
DEFECTS DISCOVERED DURING AN ANNUAL INSPECTION SHALL DO THE
MOST ECONOMICAL OF THE FOLLOWING: REPLACE THE NEXT HIGHER
COMPONENT WHICH WILL ELIMINATE THE DEFECT OR REFER TO A DEPOT
LEVEL REPAIR FACILITY. IN NO CASE SHALL A LOCOMOTIVE BE ALLOWED
TO OPERATE WITH A DEFECT THAT DEGRADES SAFETY.
Bi-ennial Locomotive Maintenance (every 2 years).
During biennial inspections of locomotives, maintenance personnel shall inspect all items required
for the annual inspection, manufacturer's recommendations for annual inspections and the
a. Air brake Systems. All valve portions in the air brake system shall be removed,
cleaned and serviced. Use CFR 49, Part 229.29 as a guideline.
b. Main Reservoir Air Tank. For main reservoir air tanks that do not have telltale holes
drilled on the surface, a hydrostatic pressure test of 175 psi and a hammer test over the entire tank
surface shall be conducted every two years, not including aluminum tanks. Use CFR 49, Part
229.31 as a guideline.
Locomotive Maintenance General
All components used in the repair or replacement of any part of a locomotive shall be compatible
with the part being replaced.
Fan openings, exposed gears and pinions, exposed moving parts of mechanisms, pipes
carrying hot gases and high voltage equipment, switches, circuit breakers, contractors,
relays, grid resistors, and fuses shall be in non-hazardous locations or equipped with
guards to prevent personal injury.
Exhaust stacks shall be of sufficient height or other means provided to prevent entry of
products of combustion into the cab or other compartments under usual operating
Battery compartments shall be vented to prevent the accumulation of explosive gas.