TM 9-2590-209-14&P
Table 4-2. Troubleshooting - Continued
MALFUNCTION
TEST OR OPERATION
CORRECTIVE ACTION
Step 5.
Inspect control valve for leaks and control valve mechanical linkage for binding or distortion.
a.
If leaking, replace control valve (para 4-53) or if binding, adjust control valve linkage (para 4-87).
b.
If not leaking or binding, proceed to step 6.
Step 6.
Perform visual and audio (sound) check of pump to determine that pump bearings, seals, shaft and wear
plates are in good condition. Removal of the pump is necessary in order to make a complete check of
pump (para 4-77).
a.
If pump is in good condition, proceed to step 7.
b.
If pump is not in good condition, replace hydraulic pump (para 4-77).
Step 7.
Check unloader valve for cleanliness. Removal is necessary to check contamination of tube assembly.
Check from control valve outlet to unloader valve.
a.
If dirty and contaminated, remove, clean, and replace unloader valve (para 4-48).
b.
If still not operating properly, replace unloader valve (para 4-48).
2.
POWER TAKEOFF OVERHEATING.
Step 1.
Check oil level in power takeoff (fig 4-1).
a.
If oil level is low, add oil to power takeoff.
b.
If oil level is not low, replace power takeoff (para 4-82).
3.
BLADE ASSEMBLY FAILS TO RAISE HIGH ENOUGH TO ENGAGE CARRYING HOOKS.
Step 1.
Inspect linkage at front of vehicle for interference caused by dirt or rocks wedged between members.
a.
If obstructed, clear obstruction and repair if necessary.
b.
If not obstructed, proceed to step 2.
Step 2.
Check carrying hooks for looseness on shaft.
a.
If loose, correct position of carrying hooks on shaft and tighten set screws (para 4-55).
b.
If not loose, notify organizational maintenance.
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