TM 9-3990-260-14&P
e. Twistlocks. Twistlocks (7) are located at each corner and allow six empty M3 CROPs to be
stacked and locked together. Each M3 CROP is secured by the twistlocks (7) of the M3 CROP directly beneath it.
f. Stowage Boxes. Two large, lockable stowage boxes (8) are located in the deck toward the rear
of the M3 CROP. The lids on the stowage boxes (8) are of the same material as the deck. The deck is not capable of
holding a forklift; the point load of the tires exceed the deck point load capability.
g. Rollers. Rollers (9) are located at the bottom rear of the M3 CROP. Rollers (9) are used for load-
ing/unloading M3 CROP onto the PLS truck and trailer, and into and out of an ISO container. Rollers (9) can be
replaced if damaged.
h. Tiedown Rings. A total of 38 10,000 lbs (4,536 kg) capacity tiedown rings (10) are provided (19
on each side) to secure payloads or to secure M3 CROP for modes of shipping other than stacked in an ISO con-
tainer, or on a PLS truck or trailer. Additionally, four 25,000 lbs (11,340 kg) capacity multipurpose provision rings
(11) are provided (two on each end) for sling lifting and securing on railcars.
i. Blocker Assemblies. The M3 CROP has five blocker assemblies. The left and right front
blocker assemblies (12) are welded in place and cannot be removed. The center blocker (13) and two rear blocker
assemblies (14) must be positioned to the stowed location to allow M3 CROPs to be stacked.
