TM 9-3990-260-14&P
Table 4-1. Unit Maintenance Preventive Maintenance Checks and Services - Continued
Location
Procedure
Not Fully Mission
Item
Interval
Item to
Capable If:
No.
Check/Service
6
Semi-
Rollers
d. Head of shaft (toward center of
d. Head of shaft
(Cont)
Annually
CROP) has at least 1/8 inch (3.2 mm) of exceeds wear criteria.
material.
7
Semi-
Tiedowns (D-
a. Visually inspect to ensure welds
a. Welds are broken,
Annually
rings) and Multi-
(19) securing bar to inside and outside
bar is loose, or side beam
purpose
of side beam are not cracked or side
is cracked.
Provisions
beam is not distorted or cracked.
b. Visually inspect to ensure tiedown
b. Any two adjacent
(D-ring) (20) and bar (21) are not miss-
(side by side) tiedowns or
ing, cracked, or deformed.
bars are missing.
c. Inspect to ensure web strap can be
c. Web strap cannot be
attached to tiedown (D-ring) and bar.
attached.
d. Visually inspect multipurpose pro-
d. Multipurpose provi-
visions and mounting brackets for
sion or mounting bracket
cracks.
is cracked.
4-10