TM 9-3990-260-14&P
a.
Removal.
End structure assembly weighs 370 lbs (168 kg). Raising and lowering must be conducted
on level ground. Use the aid of a suitable lifting device when raising or lowering end struc-
ture assembly to prevent serious injury or death to personnel.
(1)
Ensure end structure assembly is in the upright position.
(2)
Attach lifting device to end structure assembly bail bar (1).
(3)
Raise the lifting device until lifting device hook and bail bar (1) are engaged, but no
upward pressure is being applied to bail bar (1).
NOTE
A tether is no longer used to secure hitch pin clips on later model CROPs.
(4)
Remove hitch pin clips (2) from two front pins (3).
(5)
Remove pin tightening rod (4), 2-1/4 inch socket (5), socket wrench (6), and hammer (7)
from CROP stowage boxes or from the front storage areas on the M3 CROP
(S/N SC09001 and up).
(6)
Using pin tightening rod (4), 2-1/4 inch socket (5), socket wrench (6), and hammer (7)
remove castle nuts (8), lock washers (9), and front pins (3) from end structure assembly.
Discard lock washers (9).
The end structure assembly must be securely held by the assistant to ensure it does not shift
after the last rear pin is removed. Failure to comply could result in injury to personnel.
(7)
Using assistant and lifting device, relieve pressure from rear pins (10).
NOTE
The removal of the rear pins may require shaking the end structure or slight movement up or
down of the lifting device to relieve pressure and correctly align holes in pin block and pin sup-
port plate enabling the rear pins to be removed.
(8)
With the assistant holding the end structure assembly to prevent movement, remove two
cotter pins (11), two castle nuts (8), two lock washers (9) and two rear pins (10). Discard
cotter pins (11).
(9)
Lift and remove the end structure assembly using the lifting device.
NOTE
Perform the following steps for the left or right end structure spacers.
Note the positioning of spacers prior to removal, to aid in assembly.
It is not necessary to remove the spacers unless excessively worn or damaged.
