Table 4-1. Unit Preventive Maintenance Checks and Services (continued)
W - Weekly
M - Monthly
Q - Quarterly
Item to be
Compressed air used for cleaning
purposes will not exceed 30 psi
(207 kPa). Do not direct
compressed air against skin. Use
goggles or full face shield.
c. Service traction motor assembly by
blowing out with dry compressed air.
Lubricate in accordance with LO 55-2210-
d. Inspect brush holders and brushes for
grit and dirt. Check that brushes do
not stick in holders. Check for proper
spring pressure (para 4-46). Check for
minimum brush length of 1-1/4 inches
e. Check that the brush pressure springs
will not come to within 1/8 inch
(3.2 mm) of frame before next inspection.
f. Check lubricant levels. Refer to
Axle and Roll-
a. Check axle for cracks, breaks, and
b. Check roller bearing housings for
leakage, cracks, and loose cap bolts.
Check wheels for cracks and breaks. Use a
gage and check wheels for wear and looseness.
Fuel Tank and
a. Check fuel tank for cracks, breaks, and
b. Service fuel tank by draining water or
sediment from fuel tank sump.
c. Check for clogged strainer and loose
d. Check for broken fuel level gage. Clean
fuel level gage and check for proper
fuel level indication.