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TM 9-2320-364-10
3-32
Table 3-1. Troubleshooting - CONT.
Malfunction
Test or Inspection
Corrective Action
MATERIAL HANDLING CRANE (MHC) (CONT).
3.
OUTRIGGER JACKS, MAST OR BOOM OPERATION SLOW OR
ABNORMAL.
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 1. Ensure if Engine High Idle Speed switch (1) is latched and engine is
at high idle (1275 rpm).
Step 2. Check main hydraulic reservoir for fluid level.
If level is low, notify Unit Maintenance.
If level is OK and problem persists, notify Unit Maintenance.
4.
BOOM WILL NOT RAISE OR LOWER.
Step 1. Check that outrigger jacks are firmly deployed. If not, lower
outrigger jacks until front suspension is unloaded and tires do not bulge.
Step 2. Check that load is not over the load limit shown on range diagram
(Para 2-30).
If load is over range diagram, lower load to ground and reduce
load to correct weight.
If load is OK and problem remains, notify Unit Maintenance.
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