SECTION III. UNIT TROUBLESHOOTING

TM 5-2590-512-13&P SECTION III. UNIT TROUBLESHOOTING. 4-9. General Paragraph 4-11 lists common malfunctions that you may find during the operation of the Earth Auger Assembly. You should perform the test/inspection and corrective actions in the order listed. This section cannot list all the malfunctions that may occur, nor all tests, inspections and corrective actions. If a malfunction is not listed, or is not corrected by the listed corrective action, notify your supervisor. 4-10. Explanation of Columns a. Malfunction. A visual or operational indication that something is wrong with the Earth Auger Assembly. b. Test or Inspection: A procedure to isolate the problem in a component or system. c. Corrective Action. A procedure to correct the problem. 4-11. Unit Troubleshooting WARNING Prior to opening any hydraulic lines or fittings shut down SEE engine and move all SEE vehicle hydraulic controls and pedals several times through their full range of motion to relieve system pressure. To prevent serious injury or death from unexpected auger rotation, disconnect Auger Drive Unit hydraulic lines at quick disconnect fittings. Malfunction Test or Inspection Corrective Action AUGER BINDS, STOPS DIGGING, OR ROTATING WHEN CUTTING HOLE INTO EARTH. Step 1. Stop auger, remove from hole being dug. Look into hole being dug for obstruction. Remove obstruction or drill hole elsewhere. Step 2. Stop rotation. Remove auger from hole, and inspect for worn, broken, or missing teeth or defective center point. Relieve system pressure. Replace broken, missing, or dull teeth and worn center point (para 3-4,3-5). Step 3. Check hydraulic fluid level in SEE vehicle hydraulic reservoir. (See SEE TM Series 5-2420- 224, Operators TM-1 0) Add hydraulic fluid if level is tow. (See SEE Operators TM-10). AUGER DOES NOT ROTATE WHEN CONTROL IS ACTIVATED. Step 1. Ensure quick disconnects are properly connected. Step 2. Check hydraulic fluid level in SEE vehicle hydraulic reservoir. Add hydraulic fluid if level is low. Step 3. Remove covers from Auger Drive Unit and look for broken chain or stripped sprockets. Depressurize hydraulic system and replace defective chain or sprockets or other damage (para. 4-17 thru 4-29). Step 4. Check auger operating levers on SEE vehicle. If not operating properly see SEE TM manual Series 5-2420-224 for troubleshooting. Step 5. Replace/repair Auger Drive Unit hydraulic motor (para. 4-24). 4-4