28-11-00
ú ALL ú
ú ú ú 01A.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 712Jul 12/02
A
737-300/400/500MAINTENANCE MANUAL
2) Push the tape down tightly with an even and constant
pressure. 3) Push down tightly on the full strip of tape. 4) Remove the tape from the surface in one quick movement away
from the surface. 5) Examine the surface and the tape for removed finish or loosened finish. 6) If you find some removed finish or loosened finish, remove all damaged finish from the surface.
(d)
Use the tape to do a check of other areas that can have loose finish.
(e)
Clean the area with a vacuum cleaner to remove the flakes of the used finish and other unwanted material.
S 397-049
(15)
Repair the areas where the sealant has damage or where there is no sealant (AMM 28-11-00/801).
S 377-050
(16)
Repair the areas where the corrosion resistant finish (topcoat) is not there or was removed (Ref 28-11-00/801).
S 377-051
(17)
Do the procedure, "Application of Corrosion Resistant Finish", if it is necessary.
G. Put the Airplane Back to Its Usual Condition
S 097-052
(1) Remove all this remaining unwanted material:
(a)
Tools
(b)
Solvent containers
(c)
Rags
(d)
Brushes
(e)
Other unwanted material that you used to clean the tank and repair the tank.
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28-11-00
ú ALL ú
ú ú ú 01A.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 713Jul 12/02
A
737-300/400/500MAINTENANCE MANUAL
S 417-053
(2)
Install the support brackets and the fuel tank equipment that you removed.
S 417-054
(3)
Install the sump drain valve that you removed (AMM 28-11-41/401, 28-11-61/201).
S 417-055
(4)
Go out of the fuel tank and install the access panels that you removed (Ref 28-11-11/401, 28-11-31/401).
S 657-056
(5)
Put fuel in the fuel tank (AMM 12-11-00/301).
S 797-057
(6)
Do a check for leaks (AMM 28-11-00/601).
S 657-126
WARNING:_______DO THE FUEL TRANSFER PROCEDURE TO REMOVE AIR POCKETS. AIR POCKETS CAN CAUSE THE ENGINE TO STOP IN FLIGHT.
(7) Do this task: Fuel Transfer to Remove Air Pockets from the Engine Fuel Feed Line Adjacent to the Defueling Valve (AMM 28-23-00/201).
TASK 28-11-00-377-058
5. Application of Corrosion Resistant Finish (Topcoat)___________________________________________________
A. General
(1)
You apply the corrosion resistant finish (topcoat) to give protection to the internal structure of the fuel tank. It also gives protection to the surfaces of tubing in the tank. It is specially important in the protection of the bottom of the tank and the bottom part of the sides of the tank.
(2)
It is not necessary to apply corrosion resistant finish to give protection to the sealant in the fuel tank. Corrosion resistant finish can be applied on the top of a sealant layer to give protection to an adjacent area of bare (anodized) metal. It is usually easier to apply the finish to the sealant than it is to mask the sealant. But the corrosion resistant finish is not necessary for the protection of the sealant layer. It is only necessary for the protection of metal without sealant.
(3)
BMS 10-20 Type II and MIL-C-27725 are two types of corrosion resistant finish which are approved to use in the fuel tank. You can make more repairs to the sealant on an area where you applied BMS 10-20 Type II finish. But the finish must be fully dry. You can only apply the MIL-C-27725 finish as the top layer after the sealant is fully dry and bonded (Ref 28-11-00/801).
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