Table 4-1. Unit Maintenance Preventive Maintenance Checks and Services -Continued
Not Fully Mission
a. Ensure two front (14) and rear pins
a. Front or rear pin(s)
(15) are not bent, galled, cracked, cor-
bent, galled, cracked,
roded, or stripped so they do not seat
corroded, or stripped so
properly or cannot be sufficiently tight-
they do not seat properly
or cannot be sufficiently
b. Visually inspect all welds and par-
b. Parent material or
ent material for cracks.
weld is cracked.
c. End structure
c. Ensure end structure assembly
assembly tubular frame
tubular frame (16) is not bent, prevent-
is bent, preventing
ing it from loading correctly on a PLS
CROP from loading cor-
rectly on PLS truck.
a. Inspect exterior of roller (17) to
a. Roller is broken or
ensure it is not broken or so defaced that so defaced that it does
it does roll properly.
not roll properly.
b. Inspect center roller next to shaft to
b. Center of roller
ensure it is not worn more than 1/4 inch
exceeds wear criteria.
(6.4 mm) between bushing and roller
material (if bushing is not present).
c. Ensure shaft (18) is straight, with all
c. Shaft is bent so
roller will not roll or
hardware is missing so
roller can detach.