757 AMM 飞机维护手册燃油 CHAPTER 28 - FUEL 2(80)_航空信息_民用航空_通用航空

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B. This procedure contains two tasks. The first task removes the drain check valve of the fueling manifold. The second task installs the drain check walve of the fueling manifold.
TASK 28-21-05-004-001
2. Remove the Drain Check Valve of the Fueling Manifold (Fig. 401)
____________________________________________________
A. References
(1)
AMM 06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels

(2)
AMM 28-11-00/201, Fuel Tanks

(3)
AMM 28-11-02/401, Center Tank Access Door

(4)
AMM 28-26-00/201, Defueling

B.
Access

(1)
Location Zone
134 Wing Center Section (Right)

(2)
Access Panels
134AZ Center Tank Access Door (Right)
134BZ Baffle Door (Right)
134CZ Baffle Door (Right)
134DZ Baffle Door (Right)

C.
Procedure

(1)
Defuel the center fuel tank (AMM 28-26-00/201).

(2)
Remove the center tank access door, 134AZ (AMM 28-11-02/401).

S 654-002
S 014-003
S 944-004
WARNING: OBEY THE FUEL TANK ENTRY PRECAUTIONS (AMM 28-11-00/201).
_______ FAILURE TO OBEY THE FUEL TANK ENTRY PRECAUTIONS COULD CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3)
Obey the fuel tank entry precautions (AMM 28-11-00/201).

(4)
Go into the center fuel tank.

S 014-005
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28-21-05
ALL ú ú 01 Page 401 ú May 28/99

757
MAINTENANCE MANUAL

FWD BOSS
CENTER FUEL TANK
SEE A
RIB (EXAMPLE) TANK FUEL CENTER LEFT DRAIN CHECK VALVE RIGHT DRAIN CHECK VALVE
SEE C SEE B
CENTER FUEL TANK
A
FUELING
MANIFOLD

NUT, PACKING
DRAIN CHECK VALVE
SEE D
TANK FUEL CENTER RIB (EXAMPLE) RIGHT DRAIN CHECK VALVE B
MANIFOLD FUELING

FUELING
MANIFOLD

NUT,PACKING
FWD
DRAIN
NUT, PACKING DRAIN CHECK VALVE CHECK
SEE D DRAIN HOLE VALVE
LEFT DRAIN CHECK VALVE DRAIN CHECK VALVE
C D

Fueling Manifold Drain Check Valve Installation
Figure 401

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