TM 9-3990-260-14&P
Table 4-1. Unit Maintenance Preventive Maintenance Checks and Services -Continued
Item
No.
Interval
Location
Item to
Check/Service
Procedure
Not Fully Mission
Capable If:
5
Semi-
Annually
End Structure
Assembly
a.
Ensure two front (14) and rear pins
(15) are not bent, galled, cracked, cor-
roded, or stripped so they do not seat
properly or cannot be sufficiently tight-
ened.
a.
Front or rear pin(s)
bent, galled, cracked,
corroded, or stripped so
they do not seat properly
or cannot be sufficiently
tightened.
b.
Visually inspect all welds and par-
ent material for cracks.
b.
Parent material or
weld is cracked.
c.
Ensure end structure assembly
tubular frame (16) is not bent, prevent-
ing it from loading correctly on a PLS
truck.
c.
End structure
assembly tubular frame
is bent, preventing
CROP from loading cor-
rectly on PLS truck.
6
Semi-
Annually
Rollers
a.
Inspect exterior of roller (17) to
ensure it is not broken or so defaced that
it does roll properly.
b. Inspect center roller next to shaft to
ensure it is not worn more than 1/4 inch
(6.4 mm) between bushing and roller
material (if bushing is not present).
a.
Roller is broken or
so defaced that it does
not roll properly.
b. Center of roller
exceeds wear criteria.
c.
Ensure shaft (18) is straight, with all
hardware attached.
c.
Shaft is bent so
roller will not roll or
hardware is missing so
roller can detach.