TM 10-4930-369-13&P
OPERATOR INSTRUCTIONS
OPERATOR\CREW TROUBLESHOOTING PROCEDURES
INITIAL SETUP:
Materials/Parts
Personnel Required
Petroleum Supply Specialist 92F
Apron, Rubber (WP 0062, Item 1)
Extinguisher, Fire (WP 0061)
References
Gloves, Chemical/Oil Protective (WP 0062, Item 10)
Goggles, Industrial (WP 0062, Item 13)
Pail, Utility, 5 Quart (WP 0062, Item 16)
Pan, Drain, 5 gal cap (WP 0063, Item 6)
Rag, Wiping (WP 0062, Item 18)
Spill Kit (WP 0062, Item 20)
This work package provides symptom based troubleshooting procedures necessary to diagnose malfunctions
for the FDS. The troubleshooting procedures may not correct all malfunctions encountered. However, the
procedures provide a step-by-step approach that directs tests and inspections toward the source of a problem.
Each troubleshooting procedure lists a description of possible causes followed by a step or sequence of steps
to check the operation of a component.
Always irst perform a visual and physical inspection of the suspected unserviceable items. Look for obvious signs
of damage such as loose or broken parts, discoloration, and bad connections.
TROUBLESHOOTING PROCEDURE
SYMPTOM
Discharge hose not discharging fuel or low is low.
MALFUNCTION
Hose is damaged or leaks or pump is not working correctly.
CORRECTIVE ACTION
STEP 1.
Ensure pump operates (WP 0026). Contact Maintainer Maintenance if pump does not operate.
STEP 2. While running pump and pumping fuel, check differential pressure gauge. Replace ilter cartridge
if gauge is in the red zone (WP 0015).
STEP 3.
Inspect fuel source, suction hose, FDS, and discharge hose for obvious leaks.
STEP 4.
Notify Maintainer Maintenance if the problem is not corrected.
SYMPTOM
Pump noisy.
MALFUNCTION
Air in system.
CORRECTIVE ACTION
Ensure there is fuel at source and all supply valves are fully open, check suction hose ittings,
prime pump, allow to run for four minutes, notify Maintainer Maintenance.
SYMPTOM
FDS does not power up when toggle switch is turned to ON.
MALFUNCTION
FDS has no power.
CORRECTIVE ACTION
STEP 1.
Ensure there is no damage to plug, toggle switch or outlet (WP 0040).
STEP 2.
Set toggle switch to OFF. Reseat plug in source power receptacle and set power to ON.
STEP 3.
Contact Maintainer Maintenance if the problem is not corrected.