(a)
Put the air vent stack through the hole in the wing.
(b)
Align the mounting screw holes on the access panel with the correct holes in the opening of the access panel.
(c)
Put some mounting screws into the mounting screw holes to hold the access panel and the gasket in the correct position.
(3)
Put the remaining mounting screws in the mounting screw holes.
S 437-052
(4)
Tighten all the mounting screws symmetrically to between 63 and 77 pound-inches.
(5)
Connect the battery again, if you disconnected it.
(6)
Removed all the warning signs that you installed.
S 437-043
S 947-059
S 947-060
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH THE SURGE TANK FLAME ú
28-13-31
ARRESTER ú
ú 01 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 705Mar 12/01
A
737-300/400/500MAINTENANCE MANUAL
SURGE TANK PRESSURE RELIEF VALVE - REMOVAL/INSTALLATION
_______________________________________________________
1. General_______
A. This procedure contains two tasks:
(1)
A task to remove the pressure relief valve for the flame arrester in the surge tanks
(2)
A task to install the relief valve for the flame arrester in the surge tanks.
B. It is not necessary to remove the valve to do a check that the valve operates at the correct pressure difference.
TASK 28-13-41-004-001
2. Pressure Relief Valve Removal_____________________________
A. Equipment
(1)
Container - to catch fuel
(2)
Source - air pressure, limited to 1.0 psi
(3)
Tube - small, plastic
(4)
Rod, metal or non-metal - 0.415 inch (10.54 millimeter) diameter
B. References
(1)
AMM 20-40-11/201, Static Grounding
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 28-10-00/201, Fuel Storage
(4)
AMM 28-11-11/401, Wing Fuel Tank Access Panels
C. Access
(1)
Location Zones
304 Left Fuel Vent Surge Tank
404 Right Fuel Vent Surge Tank
(2)
Access Panels
7101L Left Wing Surge Tank Access Door
7501R Right Wing Surge Tank Access Door
D. Procedure
S 834-021
(1) Make sure the airplane is correctly grounded to an approved and identified ground (AMM 20-40-11/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH THE PRESSURE RELIEF VALVE ú
28-13-41
ú ú 02 Page 401 ú Mar 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
(2) S 944-022Remove the electrical power from the airplane (AMM 24-22-00/201). (a) Do not connect the power again until the fuel tank is closed and safe.
(3) S 944-023Disconnect the battery and attach a sign that shows OPEN FUEL TANKS DO NOT CONNECT.
S 654-002
WARNING: OBEY ALL OF THE RELATED SAFETY PROCEDURES TO DRAIN THE TANK AND
_______ TO GO INTO IT. YOU CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT IF YOU DO NOT FOLLOW THE SAFETY PROCEDURES.
(4) Make sure there is no remaining fuel in the surge tank.
(a)
Open the applicable sump drain valve.
(b)
Let the remaining fuel flow into a container.
S 864-004
WARNING: DO NOT TRY TO REMOVE THE ACCESS PANEL WHEN THE PRESSURE RELIEF
_______ VALVE IS IN THE CLOSED POSITION. THE DEVICE THAT OPENS THE PRESSURE RELIEF VALVE CONTAINS A STRONG SPRING WHICH CAN EASILY CAUSE BAD INJURIES TO YOUR FINGERS.
(5) Put the pressure relief valve into the open position if it is not open.
(a) PRESSURE RELIEF VALVE WITH THE KNOB TYPE OF RESET; Do these steps to open the pressure relief valve:
NOTE: An open valve has the poppet above the skin on the wing
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