TM 10-4330-234-13&P
SECTION IV. UNIT TROUBLESHOOTING
Paragraph
Page
General ...............................................................................................................
Unit Troubleshooting Procedures .........................................................................
4-10. General. This section contains troubleshooting procedures to determine the probable cause of observed
equipment malfunctions. Test or inspections are provided to isolate the faulty component and corrective
actions are provided to eliminate the malfunction.
4-11. Unit Troubleshooting Procedures. Refer to the symptom index to locate the troubleshooting
procedure for the observed malfunction. The table lists the common malfunctions that may occur during the
operation or maintenance of the filter/separator. Perform the tests or inspections, and the recommended
corrective action in the order listed in the troubleshooting table. If the malfunction is corrected by a specific
corrective action, do not continue with the remaining steps, if any, of the troubleshooting procedure. If the
malfunction is not corrected by the listed corrective actions notify your supervisor.
SYMPTOM INDEX
Symptom
Page
Contaminated fuel at nozzle .........................................................................................................
No fuel delivery ............................................................................................................................
General fuel leakage ....................................................................................................................
Sudden increase in pressure differential .......................................................................................
Sudden decrease in pressure differential ......................................................................................
Table 4-2. Unit Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
CONTAMINATED FUEL AT NOZZLE.
Remove unit cover and inspect canister and filter elements for damage (para. 4-14).
Replace filter elements. (para. 4-14.)
2.
NO FUEL DELIVERY.
Step 1. Check to see if pumping unit is operating properly.
If pump is not operating properly, refer to applicable technical manual.
Step 2. Check to see if inlet and outlet valves of filter/separator are open.
Open valves.
4-5
