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TM 9-2320-364-10
3-33
Table 3-1. Troubleshooting - CONT.
Malfunction
Test or Inspection
Corrective Action
MATERIAL HANDLING CRANE (MHC) (CONT).
5.
BOOM OPERATION JERKY OR WILL NOT TELESCOPE IN OR
OUT.
Step 1. Check that outrigger jacks are firmly deployed. If not, lower
outrigger jacks until front suspension is unloaded, and tires do not bulge.
NOTE
If high idle does not work, but is required for mission, remove chock block
from stowage and place on throttle control to achieve desired high idle.
Notify Unit Maintenance when mission is completed.
Step 2. Ensure Engine High Idle switch (1) is latched and engine is at high
idle (1275 rpm).
Step 3. Check fluid level in main hydraulic reservoir.
If level is low, notify Unit Maintenance.
If level is OK, go to Step 4.
Step 4. Check that load is not over the load limit shown on range
diagram (Para 2-30).
Lower load and reduce load to correct weight.
If load is OK, go to Step 5.
Step 5. Visually check if boom sections (2) are bent or damaged.
If boom sections are bent or damaged, notify Unit Maintenance.
If boom sections are OK, go to Step 6.
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