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TM 10-4930-232-12&P
CHAPTER 3
OPERATOR MAINTENANCE INSTRUCTIONS
Page
OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-1
Section I.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-1
Section II.
Operator Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-1
OVERVIEW
This chapter includes maintenance procedures to be performed by the operator to ensure that the fuel system
remains mission capable.
Section I. INTRODUCTION
3-1. General. Operator maintenance of the fuel system is limited to locating and correcting operating troubles
that may develop in the system, visually inspecting hose assemblies, fittings, valves, manifolds and nozzles,
replacing components found to be defective, and cleaning nozzle screens. All components are connected with
quick-disconnect cam-locking fittings which require no tools or detailed instruction.
Section II. OPERATOR TROUBLESHOOTING PROCEDURES
3-2. General. This section contains troubleshooting information for locating and correcting most of the
operating troubles which may develop in the fuel system. Each malfunction for an individual component is
followed by a test or inspection for probable causes and actions to take in correcting the malfunction.
3-3. Troubleshooting Procedures. Refer to the symptom index to locate the troubleshooting procedure
for the observed malfunction. Malfunctions which may occur during operation are listed in Table 3-1. This manual
cannot list all malfunctions which may occur nor all of the corrective actions. If a malfunction is not listed or is not
corrected by listed corrective action, notify your supervisor.
NOTE
Before you use this table, be sure you have performed all applicable preventive
maintenance checks and services listed in Table 2-1.
SYMPTOM INDEX
Symptom
Page
Pump fails to operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-2
Filter/separator inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-2
Fuel leaks at couplings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-2
Gate valve leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-2
Quick-acting valve leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...3-2
3-1
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