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Malfunction
Test or Inspection
Corrective Action
TM 9-2320-304-14&P
5-73
Direct Support and General Support Maintenance (Cont)
Table 5-2. Direct Support/General Support Troubleshooting (CONT)
LOAD HANDLING SYSTEM (LHS)
11. LHS HOOK ARM DISENGAGES FROM FLATRACK WHILE UNLOADING (CONT).
NOTE
·
Four (4) 2” x 12” x 6’ boards are used under the front and rear of the flatrack to
ensure the main rails will be at the same height.
·
Front boards will be used to aid in measuring the flatrack hook bar height.
·
Use of a level (3 ft. minimum [92 cm]) is required when leveling flatrack.
·
Flatrack hook bar height range is given for a hook bar with or without wear.
·
If lift hook does not swing toward truck, push lift hook toward truck and insert pin
to hold in measurement position.
Step 3. Level flatrack, check flatrack hook bar height.
If measurement is not between 60-13/16 and 61-1/8 in. (154.469 and 155.25 cm),
repair flatrack hook bar. Refer to TM 9-3990-206-14&P.
Step 4. Remove quick pin and pin from hook, allow hook to swing toward truck. Check hook arm
length.
If hook arm measurement is not between 22-1/8 and 22-3/8 in. (561.9 to
568.3 mm), replace hook arm. Refer to Para 5-22.
Step 5. Operate LHS and check for proper unload function.
If flatrack does not unload correctly, fault not corrected. Notify supervisor.
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