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FUEL SYSTEM INSPECTION – continued | Up
TM-1-1520-238-23-6 Helicopter Attack AH-64A Apache (NSN 1520-01-106-9519) (EIC: RHA) Manual | Next
FUEL SYSTEM SAFETY PRECAUTIONS |
TM 1-1520-238-23
10-10
Change 4
10.1.
FUEL SYSTEM INSPECTION – continued
(5) If inspection is satisfactory, reinstall ammunition bay access panel B200 (para 2.2).
o. Check after first engine ground operation or opening of any fuel cell for inspection, maintenance, or
replacement of fuel cell components.
(1) After first and second engine run or flight:
(a) Remove engine No. 1 and No. 2 fuel filter bowls (TM 55-2840-248-23).
(b) Remove APU fuel filter cover (TM 1-2835-213-23).
(c) Check filter bowls and filter cover for contaminants. Drain on lint-free cloth if contaminants are found.
Monitor number of particles removed. Use clean cloth (item 52, App F).
(d) Install engine No. 1 and No. 2 fuel filter bowl (TM 55-2840-248-23).
(e) Install APU fuel filter cover (TM 1-2835-213-23).
(2) After third engine run or flight:
(a) Remove engine No. 1 and No. 2 fuel filter bowls (TM 55-2840-248-23).
(b) Remove APU fuel filter cover (TM 1-2835-213-23).
(c) Check filter bowls and APU fuel filter cover for contaminants.
1 If contaminants are present go to step o.(3). Inspect at 100 flight hour intervals until contaminants
are removed.
2 If not contaminated, install engine No. 1 and No. 2 filter bowls (TM 55-2840-248-23) and APU fuel
filter cover (TM 1-2835-213-23). Extend to 100 flight hours and inspect for contaminants.
(3) After contaminants are found:
(a) Defuel aircraft (para 1.20).
(b) Flush aircraft fuel system (FM 10-68).
(c) Repeat step o.(2).
p. Upon opening either forward or aft fuel cell.
(1) Check fuel quantity transmitter wire harness for cuts, nicks, and fuel seepage. None allowed.
(a) In the event of servicing a fuel cell in which the harness must be temporarily removed, it shall be stored
in a location or container that will prevent damage until reinstalled.
q. Check exterior of fuel cell for fuel.
(1) If fuel has contacted exterior of fuel cell, cell must be removed, cleaned with warm soapy water, and air
dried (para 10.49).
(2) Check for damage, delamination, and swelling of fuel cell.
(a) If any is found, replace cell (para 10.50).
(b) If no damage is present, reinstall cell (para 10.50).
(3) Fuel cell cavity must be clean and dry prior to installation.
END OF TASK
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