TM 55-2210-224-12
Table 4-1. Unit Preventive Maintenance Checks and Services
W - Weekly
M - Monthly
Q - Quarterly
Interval
Item
Item to be
No.
W
M
Q
Inspected
Procedures
1
Couplers
Inspect couplers for cracks, sheared or
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 gage and check coupler knuckle for
wear to determine serviceability. Lubricate
in accordance with LO 55-2210-224-12.
2
Truck Assembly
a. Inspect pedestal liners for cracks,
wear, and damage. Lubricate in
accordance with LO 55-2210-224-12.
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 devises for wear and damage.
Inspect brakeshoes for damage and excessive
wear (minimum 3/4 inch). Lubricate in
accordance with LO 55-2210-224-12.
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). Lubricate in
accordance with LO 55-2210-224-12.
5
Air Reservoir
Inspect air reservoirs for cracks, breaks,
and damage.
6
Traction Motor
a. Inspect traction motor mounts for
Assembly
damaged pads.
b. Remove brush covers and inspect interior
for grit, dust, and dirt.
4-3
