(2)
Install the access doors on the fuel tank(s) (AMM 28-11-01/401, AMM 28-11-02/401).
S 086-021
(3)
Remove the pressure check equipment from the air pressure source and the inlet fuel feed lines.
S 436-042
(4)
Connect the left and right engine inlet fuel feed lines (AMM 73-11-07/401).
S 796-029
(5)
Do a test of the main fuel supply line that is shown in the Power Plant Test reference table (AMM 71-00-00).
TASK 28-22-07-796-046
3. Fuel Pressure Leak Check in Strut with Fuel Pumps
_________________________________________________
A. General
(1)
This test will do a visual check for leakage in the fuel lines from the strut to the engine fuel pump. The fuel spar valve is open and the fuel line is pressurized with fuel from the fuel system pumps.
B.
References
(1)
AMM 12-11-01/301 Refueling
(2)
AMM 24-22-00/201, Electrical Power
(3)
AMM 28-22-07/401, Fuel Line and Fittings
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MAINTENANCE MANUAL
(4)
AMM 54-53-01/401, Strut Pressure Relief and Access
(5)
AMM 54-55-00/201, Strut Drains
(6)
AMM 73-11-07/401, Engine Main Fuel Supply Line
(7)
AMM 78-31-00/201, Thrust Reverser System
C.
Access
(1)
Location Zones
433/443 Nacelle strut - mid-structure
D.
Prepare for the Test
S 866-047
(1)
Supply the electrical power (AMM 24-22-00/201).
S 216-048
(2)
Make sure the fuel line from the front spar to the engine pump is completely installed.
S 656-049
(3)
Refuel the center fuel tank with enough fuel to operate the override pumps (AMM 12-11-01/301):
(a)
For the fuel override pumps, refuel the center fuel tanks to 20,000 pounds (9,000 kilograms) minimum.
S 866-050
(4)
For the applicable engine, make sure these circuit breakers are closed:
(a)
6H15, L AFT FUEL BOOST PUMP
(b)
6H23, L FWD FUEL BOOST PUMP
(c)
6F14, L FUEL OVRD PUMP
(d)
6H20, R AFT FUEL BOOST PUMP
(e)
6H17, R FWD FUEL BOOST PUMP
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本文链接地址：757 AMM 飞机维护手册 燃油 CHAPTER 28 - FUEL 3(81)
