(2)  
SRM 57-20-01

 (3)  
CPM 20-40-00

 (4)  
AIPC 28-11-11-05

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

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737-300/400/500MAINTENANCE MANUAL
 (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

 E. Prepare for Access Panel Installation
 S 104-090
 (1)  
Examine the open tank for unwanted objects, for example tools, broken pieces of metal, and other unwanted material.

 S 164-014

 (2)  
Clean the open tank, if it is necessary, then continue the access panel installation.

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 (3)  S 094-015Remove the rubber protector panel from the access panel opening.
 (4)  S 164-016Clean these surfaces fully with a clean, lint-free cloth moist with solvent. (a) Clean the edge of the opening in the wing which will touch the access panel. (b) Clean the access panel surface which will touch the wing skin. (c) Clean the clamp ring.
 (5)  S 214-017Examine the inner wing surface and the wing skin near the access panel opening for corrosion. (a) If you find some corrosion, refer to the Structural Repair Manual (SRM 57-20-01).
 NOTE:____ The Corrosion Prevention Manual (CPM 20-40-00), also gives data to repair and prevent corrosion.
 (6)  S 214-018Make sure the aluminum gasket is serviceable.
 (7)  S 164-020If the gasket is serviceable, clean the gasket with a clean, lint-free cloth moist with solvent.
 (8)  S 964-021If the gasket is not serviceable, do these steps to replace it: (a) Put the tray assembly for the gasket on a flat surface with its face up. (b) Remove the paper cover from the tray. (c) Put the clamp ring on the gasket (with the countersunk end of the holes face up).

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737-300/400/500MAINTENANCE MANUAL
 (d)  Make sure the clamp ring and gasket holes align.
 NOTE: The holes are not symmetrical.
　
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