TM 9-3990-260-14&P
End structure assembly weighs 370 lbs (168 kg). Raising and lowering must be con-
ducted on level ground. Use the aid of a suitable lifting device when raising or lower-
ing end structure assembly to prevent serious injury or death to personnel.
Ensure at least one crewmember physically holds the end structure assembly in the
upright position during procedures to remove two front pins. Failure to comply may
result in severe injury or death to personnel.
(1)
Remove center blocker assembly (14) and secure it at its stowed position.
(2)
Remove the following items from the CROP stowage boxes or from the front storage areas
on the M3 CROP (S/N SC09001 and up).
Pin Tightening Rod (9)
Socket Wrench (11)
2-1/4 inch Socket (10)
Hammer (13)
NOTE
A tether is no longer used to secure hitch pin clips on later model CROPs.
(3)
Remove the two hitch pin clips (12) from two front pins (4).
(4)
With the aid of an assistant holding the end structure assembly (3) in the upright position,
remove two front pins (4), lock washers (7), and castle nuts (8) using pin tightening rod
(9), 2-1/4 inch socket (10), and socket wrench (11). Use hammer (13) to loosen front pins
for removal, if required.
NOTE
The following procedure may first require pushing the end structure assembly from its vertical
position, toward the deck, until it loosens the rear pins enough to be lowered. If the end
structure assembly cannot be pushed over, loosen the hex nuts on the two rear pins
approximately 1/4 turn and try again to push the end structure assembly over toward the deck.
(5)
With the aid of an assistant, lower the end structure assembly (3) to the cargo deck.
NOTE
A tether is no longer used to secure hitch pin clips on later model CROPs.
(6)
Replace lock washers (7), castle nuts (8), and hitch pin clips (12) on the front pins (4).
(7)
Return the following items to the CROP stowage boxes or into the front storage areas on
the M3 CROP (S/N SC09001 and up).
Pin Tightening Rod (9)
2-1/4 inch Socket (10)
Socket Wrench (11)
Hammer (13)
(8)
Return the following items to CROP storage box.
Two Front Pins (4)
Lock Washers (7)
Castle Nuts (8)
Hitch Pin Clips (12)