(10)
Make sure the valve operates correctly. NOTE: The maximum torque on the valve handle is 30 pound-inches.
____ S 434-022
(11)
Install the bolt that attaches the clamp to the pump inlet line.
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28-22-51
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 414-023
(12)
Install the access panel for the fuel tank (AMM 28-11-11/401).
S 414-025
(13)
Install the access panel for the boost pump, if you removed it (AMM 57-30-11/401).
NOTE: Make sure the removal valve is open before you install
____
the access panel for the boost pump.
S 414-026
(14) Install the small clearance panel below the removal valve actuating handle, if you removed the clearance panel.
NOTE: Make sure the retaining chain does not touch the panel and
____
the stringers before you tighten the screws.
S 864-031
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT REMOVE THE SAFETY LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(15) If the leading edge flaps are extended, do these steps:
(a)
Remove the locks on the leading edge flap (AMM 27-81-00/201).
(b)
Retract the leading edge flaps (AMM 27-81-00/201).
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28-22-51
ALL ú ú 01 Page 406 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
FUEL BOOST PUMP BYPASS VALVE - REMOVAL/INSTALLATION
___________________________________________________
1. General
_______
A. This procedure contains two tasks:
(1)
The first task is to remove the bypass valve for the fuel boost pump.
(2)
The second task is to install the bypass valve for the fuel boost pump.
B. There is one bypass valve in each main fuel tank.
C. Make sure you defuel the applicable tank before you replace the bypass valve.
TASK 28-22-61-004-002
2. Remove the Fuel Boost Pump Bypass Valve (Fig. 401)
_______________________________________
A. References
(1)
AMM 28-10-00/201, Fuel Storage
(2)
AMM 28-11-11/401, Wing Tank Access Panels
(3)
AMM 28-23-00/201, Defueling
B. Access
(1)
Location Zones
305 Left Fuel Tank
405 Right Fuel Tank
(2)
Access Panels
7202 Fuel Tank Access Door
7402 Fuel Tank Access Door
C. Prepare to Remove the Fuel Boost Pump Bypass Valve
S 214-001
(1) Make sure the crossfeed valve is in the closed position.
S 654-026
WARNING: CAREFULLY DO ALL THE SAFETY PROCEDURES TO DEFUEL AND TO GO INTO
_______ THE FUEL TANKS. INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR IF YOU DO NOT FOLLOW THE SAFETY PROCEDURES.
(2)
Defuel the No. 1 tank and prepare to go into it (AMM 28-23-00/201, AMM 28-10-00/201).
S 014-025
(3)
Remove the No. 1 access panel for the wing tank (AMM 28-11-11/401).
D. Procedure
S 034-012
(1) Remove the bolt, the nut, and the washer that attach the valve bonding jumper to the tube.
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