| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-223-24-15
Table 2-2. Unit Maintenance Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Hydraulic power unit fails to start.
STEP 1.
Check for power.
Reestablish power.
STEP 2.
Check the dial pressure gage (1) on figure 2-6 for proper indication (green).
If in the (red), the filter element (18) should be changed.
STEP 3.
Check controller pilot circuit fuses (control circuits).
Replace fuses if necessary.
STEP 4.
Check for defective start switch.
Replace start switch (TM 55-1905-223-24-18).
STEP 5.
Check for defective alternating current motor.
Replace alternating current motor (para. 2-18).
2. Hydraulic power unit fails to pump fluid.
STEP 1.
Check fluid level.
Fill to correct fluid level (para. 2-13; PMCS Item 8).
STEP 2.
Check for stuck directional control valve.
Replace directional control valve (para. 2-20).
STEP 3.
Check for contaminated fluid.
Change fluid (para. 2-13).
STEP 4.
Check for clogged suction strainer.
Remove and clean suction strainer (para. 2-17).
STEP 5.
Check for defective relief valve.
Replace relief valve (para. 2-17).
STEP 6.
Check for defective hydraulic pump.
Replace hydraulic pump (para. 2-19).
3. Windlass overruns load or hydraulic fail-safe brake fails.
STEP 1.
Check for defective directional control valve.
Replace hydraulic valve (para. 2-20).
4. Gear box overheated.
STEP 1.
Check for low lubricant level.
Correct lubricant level (LO 55-1905-223-12).
Change 1
2-9
|
||
|
||
