TM-9-3990-260-14-P
CONTAINER ROLL-IN/OUT PLATFORM (CROP) MODEL M3 AND MODEL M3A1
TECHNICAL MANUAL; OPERATOR’S, UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
JULY 2001
TM-9-3990-260-14-P - Page 92 of 306
TM 9-3990-260-14&P
3-2.
M3 CROP TROUBLESHOOTING SYMPTOMS (CONT).
Table 3-2. Operator Troubleshooting Procedures
MALFUNCTION
TEST OR INSPECTIONS
CORRECTIVE ACTION
1.
END STRUCTURE ASSEMBLY (A-FRAME) LOWERS TOO RAPIDLY (TOO HEAVY).
•
End structure assembly dead weight is beyond two-man lift limit. The end structure
assembly is equipped with a rear pin and castle nut which secures the end structure
and serves as a friction device which aids in lowering the end structure assembly.
•
Lowering operations must by conducted on level ground.
•
Do not stand under end structure assembly when raising or lowering.
•
Use an assistant when raising or lowering the end structure assembly to prevent seri-
ous injury to personnel.
Is one or both rear pins loose or missing the castle nut or cotter pin?
•
If the rear pin assembly is loose, tighten each rear pin by inserting the BII pin tight-
ening rod through the hole in the end of each pin and turning the castle nut clock-
wise using the BII 2 ¼" socket and socket wrench. Tighten the castle nut until it
presses firmly against the lock washer and the split in the lock washer is fully com-
pressed. Turn the castle nut a further 1/4 to 3/4 turn. Do not bend the tightening rod
by attempting to turn the rear pins using the tightening rod. Use the 2 ¼" socket and
socket wrench to turn the castle nut. The tightening rod is used to keep the rear pin
from turning during the tightening procedure.
•
If the castle nut or cotter pin is missing, contact unit maintenance.
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