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TM 10-4930-250-13&P
CHAPTER3
OPERATOR MAINTENANCE
INSTRUCTIONS
Page
Section I
Lubrication Instructions
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3-1
3.1
Lubrication
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3-1
Section Il
Operator Troubleshooting Procedures
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3-1
3.2
Operator Troubleshooting
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3-1
Section III
Operator Maintenance Procedures
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3-2
3.3
Replace Unisex Coupling Face Seal/Dust Cap Seal
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3-2
Section I. LUBRICATION INSTRUCTIONS
3.1 LUBRICATION.
Lubrication by the operator/crew is limited to checking the engine oil level and adding oil as required by the PMCS schedule
in TM 10-4320-351-14.
Section II. OPERATOR TROUBLESHOOTING
PROCEDURES
3.2 OPERATOR TROUBLESHOOTING.
Troubleshooting Table 3-1 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 coffective 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 3-1. TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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.
a. Replace damaged or worn face seal.
b. Notify unit maintenance if unisex coupling continues to leak.
3-1
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