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TM 10-4930-247-13&P
Section III. OPERATOR MAINTENANCE PROCEDURES
3-4.
COMPONENT REPLACEMENT.
The following procedure is applicable to all components equipped with dry break couplings, including the closed circuit
refueling nozzles, D1 nozzles, hose assemblies, elbows, tees and adapters.
Removal of defective components from the assembled fuel system is accomplished by closing the nearest upline and
downline valved dry break couplings and disconnecting the couplings at both ends of the defective component.
Installation of the replacement component is performed by positioning the new component in the fuel system, connecting
the dry break couplings and opening the upline and downline valves.
This task consists of:
a.
Removal
b.
Installation
INITIAL SET-UP:
General Safety Instructions:
Equipment Condition:
Fuel system shut down (para 2-12g)
WARNING
To prevent injury to personnel and damage to the
equipment, observe all safety precautions when
working on fuel system. DO NOT smoke within 100
feet of fuel system.
NOTE
Replacement of a typical fuel system component is shown. Replacement of all
components equipped with dry break couplings is similar.
a.
Removal. Refer to figure 3-1.
(1)
Defuel fuel hoses using the HEMTT tanker. Refer to TM 9-2320-279-10-1.
(2)
Set control handle (1) on valved coupling (2) to CLOSE.
(3)
Set control handle (3) on valved coupling (4) to CLOSE.
(4)
Disconnect valved coupling (2) from valved coupling (4).
(5)
Disconnect dust cap (5) from dust cap (6).
(6)
Connect dust cap (5) to valved coupling (2).
(7)
Connect dust cap (6) to valved coupling (4).
(8)
Repeat steps (1) through (6) for other end of defective components (7).
(9)
Remove defective component (7) from fuel system (8).
3-12 Change 6
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