ADVANCED AVIATION FORWARD AREA REFUELING SYSTEM MODEL M100A1
OPERATOR TROUBLESHOOTING PROCEDURES
Troubleshooting Table 1 is provided to assist you in locating and correcting system faults. This table cannot list all the
malfunctions that may occur, all the tests and inspections needed to find the fault, or all the corrective actions needed to
correct the fault. If the equipment malfunction is not listed or actions listed do not correct the fault, notify your supervisor.
Table 1. Operator Troubleshooting
TEST OR INSPECTION
1. Unisex coupling leaks at interface with dust cap or other coupling.
Step 1. Inspect coupling face for foreign matter.
Remove foreign matter from coupling face.
Step 2. Inspect coupling and dust cap face seals for physical damage or wear.
Replace damaged or worn face seal.
Notify unit maintenance if unisex coupling continues to leak.
2. Auxiliary pump will not prime.
Check that inlet and outlet unisex valves are open.
3. Auxiliary pump operates at low capacity.
Check for blockage.
Disconnect lines from inlet and outlet unisex couplings.
Open coupling valves and visually inspect for blockage. Remove any blockage.
4. Engine will not crank.
Check electrical connections to starter.
Make sure all connections between battery and starter are tight and clean.
Verify that control cable is connected between accessory module and engine module.
If manual start fails, notify unit maintenance.