28-11-11
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
L59365
 B.
C.
D.
A
737-300/400/500MAINTENANCE MANUAL
 (4)  
Source - air pressure, limited to 1 psi

 (5)  
Tube - small, plastic

 (6)
Rod, metal or non-metal - 0.415 inch (10.54 millimeter) diameterReferences

 (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 28-23-00/201, DefuelingAccess

 (1)  
Location Zones 221 Center Section Fuel Tank 305 Left Wing Fuel Tank 405 Right Wing Fuel Tank

 (2)  
Access Panels 7101L Left Wing Surge Tank Access Door No.13 7501R Right Wing Surge Tank Access Door No.13 7202L Left Wing Fuel Tank Access Door No.1 7402R Right Wing Fuel Tank Access Door No.1 7204L Left Wing Fuel Tank Access Door No.2 7404R Right Wing Fuel Tank Access Door No.2 7205L Left Wing Fuel Tank Access Door No.3 7405R Right Wing Fuel Tank Access Door No.3 7206L Left Wing Fuel Tank Access Door No.4 7406R Right Wing Fuel Tank Access Door No.4 7207L Left Wing Fuel Tank Access Door No.5 7407R Right Wing Fuel Tank Access Door No.5 7208L Left Wing Fuel Tank Access Door No.6 7408R Right Wing Fuel Tank Access Door No.6 7209L Left Wing Fuel Tank Access Door No.7 7409R Right Wing Fuel Tank Access Door No.7 7210L Left Wing Fuel Tank Access Door No.8 7410R Right Wing Fuel Tank Access Door No.8 7211L Left Wing Fuel Tank Access Door No.9 7411R Right Wing Fuel Tank Access Door No.9 7212L Left Wing Fuel Tank Access Door No.10 7412R Right Wing Fuel Tank Access Door No.10 7213L Left Wing Fuel Tank Access Door No.11 7413R Right Wing Fuel Tank Access Door No.11 7214L Left Wing Fuel Tank Access Door No.12 7414R Right Wing Fuel Tank Access Door No.12

Prepare for Access Panel Removal
 S 944-094
 (1)  Make sure the airplane is correctly grounded to an approved and identified ground (AMM 20-40-11/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-11-11
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 654-066
 (2)  Defuel the applicable tank (AMM 28-23-00/201).
 NOTE: Defueling is not necessary for removal of the surge tank
____
 access panel No. 13.

 S 944-095
 (3)  Remove all electrical power from the airplane (AMM 24-22-00/201).
 (a)  Do not connect electrical power again until the tank is closed and safe.
 S 944-096
 (4)  
Disconnect the battery and attach a sign that shows OPEN FUEL TANKS - DO NOT CONNECT.

 S 944-097

 (5)  
Make sure there is no remaining fuel in the tank.

 (a)  
Open the sump drain valve for the applicable fuel tank.

 (b)  
Let the remaining fuel flow into an approved fuel container.

 S 864-000
 WARNING:_______OBEY ALL THE RELATED SAFETY PROCEDURES. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR IF YOU DO NOT FOLLOW THE SAFETY PROCEDURES.
 (6)  
If you are scheduled to go into the tank, prepare the tank for entry (AMM 28-10-00/201).

 S 044-008

 (7)  
On the access panels with the fuel measuring sticks, 7202L or 7402R, 7206L or 7406R, 7208L or 7408R, 7210L or 7410R, and 7212L or 7412R, pull the stick fully out.

 NOTE: Wing tank access panels No. 1, 4, 6, 8 and 10 have fuel
____
 measuring sticks.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-11-11
 ALL  ú ú 03 Page 408 ú Mar 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 864-103
 WARNING:_______ DO NOT TRY TO REMOVE THE SURGE TANK ACCESS PANEL WHEN THE
 PRESSURE RELIEF VALVE IS IN THE CLOSED POSITION.  THE DEVICE
 THAT OPENS THE RELIEF VALVE CONTAINS A STRONG SPRING WHICH CAN

 EASILY CAUSE BAD INJURIES TO YOUR FINGERS.
　
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