TM 9-2590-20l-14&P
Table 3-1. Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. BLADE ASSEMBLY FAILS TO RAISE HIGH ENOUGH TO ENGAGE CARRYING HOOKS.
Step 1. Check linkage at front of vehicle for interference caused by dirt or rocks wedged between moving parts.
Remove any interfering material.
Step 2. Check level of oil in hydraulic reservoir (fig 3-1).
Replenish as required.
3. BLADE ASSEMBLY FAILS TO LOWER WHEN CONTROL VALVE LEVER IS IN THE L (LOWER) POSITION.
Step 1. Check that carrying hooks are completely disengaged. If not, push release handle forward until carrying
hooks are fully disengaged.
Step 2. Check if any debris or obstacles prevent blade assembly downward motion.
4. BLADE ASSEMBLY FAILS TO DIG PROPERLY.
Step 1. Inspect cutting edge for looseness.
Tighten attaching bolts if required.
Step 2. Check if cutting edge is excessively worn.
Notify organizational maintenance to replace or reverse cutting edge.
5. BLADE ASSEMBLY FAILS TO OPERATE.
Step 1. Check that HYDRAULIC PUMP switch is in ON position.
Place in ON position.
Step 2. Check that hydraulic pump indicator is illuminated.
Replace indicator lamp. If replacement indicator lamp fails to light with HYDRAULIC PUMP switch ON,
notify organizational maintenance.
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