TM 552210-223-12
TO 45A2-2-14-41
Table 4-1. Unit Preventive Maintenance Checks and Service
W -
Weekly
M -
Monthly
Q - Quarterly
INTERVAL
ITEM
ITEM
TO BE
NO. W
M
Q
INSPECTED
PROCEDURES
1
Couplers and
Inspect mechanism for cracks, sheared or
Draft Gear
worn pins, and missing parts. Check for a
height of between 32.5 and 34.5 inches
(825.5 and 876.3 mm) from top of the rails
to center line of the knuckle. Use a wear
limit gauge and check coupler knuckle for
wear to determine serviceability.
2
Truck Assembly
a.
Inspect pedestal liners for cracks,
wear, and damage.
b.
Inspect side bearing for 1/2-inch
clearance.
c.
Inspect axle lateral for 1/8-inch
clearance.
d.
Inspect truck frame springs for cracks
and breaks.
e.
Inspect truck frame and bolster for
cracks.
3
Foundation
Inspect foundation brake lever pins,
Brake
bushings, and clevises for wear and damage.
Inspect brakeshoes for damage and excessive
wear (minimum 3/4 inch).
4
Brake Cylinder
Inspect brake cylinder for wear and damage.
Check for piston travel of from 3 to 6
inches (76.2 to 152.2 mm).
5
Air Reservoir
Inspect air reservoirs for cracks, breaks,
and damage.
6
Traction Motor
a.
Inspect traction motor mounts for
Assembly
compressed springs.
b.
Check for proper clearance on nose
wearplate.
7
Traction Motor
a.
Remove felt wicks, wash in flushing oil,
Support Bearing
scrape glazing, and install.
b.
Check oil level. Refer to LO 55-2210-
223-12.
4-3