(2)  
G50045 Tape - Chloroprene, BMS 1-11

 (3)  
G50037 Tape - cork/rubber, AMS-T-6841

 (4)  
B00148 Solvent - Methyl Ethyl Ketone (MEK)

 (5)  
C00261 Primer - Corrosion Preventive

 (6)  
G00009 Corrosion Inhibitor - Dinitrol AV8 Type II, BMS 3-23

 B. References
 (1)  
AMM 25-27-01/401, Main Deck Floor Covering

 (2)  
AMM 51-24-09/701, Nonskid Surface Paint

 (3)  
AMM 51-31-01/201, Seals and Sealing

 (4)  
AIPC 53-21-00

 C. Access
 (1)  Location Zone
 Cabin - Main and Upper Deck

 D. Install the Floor Panel
 S 914-057
 (1)  Install the cork tape.
 (a)  Make sure the cork tape between the mating surfaces has not been damaged.
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MAINTENANCE MANUAL

 WARNING:_______ DO NOT GET SOLVENTS IN YOUR MOUTH, OR YOUR EYES, OR
 ON YOUR SKIN.  DO NOT BREATHE THE FUMES FROM
 SOLVENTS.  SOLVENTS ARE HAZARDOUS MATERIALS.
 SOLVENTS MAY BE FLAMMABLE.  REFER TO PRODUCT MATERIAL
 SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIREMENTS FOR

 PROPER HANDLING PROCEDURES.
 1) Make sure the mating surfaces are clean (AMM 51-31-01/201).
 NOTE: When you clean the mating surfaces, do not
____ remove any of the BMS 3-23 corrosion inhibiting compound that has been applied to the floor structure. BMS 3-23 corrosion inhibiting compound could have been applied to repaired floor structure and it must remain in place. Be careful when you install the floor panel so the cork tape is in the correct position.
 NOTE: If you remove some of the BMS 3-23 from the floor
____ structure, replace it with Dinitrol AV8 Type II or equivalent per BMS 3-23.
 2) Apply the new cork tape if it is necessary.
 NOTE: Optional tape materials BMS 1-11
____ can be used as an alternative to the cork tape. These materials will vary in thickness for floor leveling and drainage.
 NOTE: If you attach the tape to the floor panel as an
____ alternative to the structure, you can remove the panels many times without replacement of the tape.
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747-400 MAINTENANCE MANUAL
 3) Remove the protective paper from the adhesive. 4) Put the new tape into position.
 NOTE: As an alternative to the installation of the tape to
____ the floor structure, it is permitted to install the tape to the lower surface of the floor panel. This alternative is not permitted on the edges of the floor panel except when the panel attaches to a crowned seat track.
 NOTE: If it is necessary to install a new floor panel and
____ the old floor panel had rubatex tape applied on the lower surface, make sure you install new cork tape on the lower surface of the new panel.
 5)  If it is necessary to splice the tape ends together, make sure no gaps occur.
 S 424-008
 (2)  Install the floor panel:
 (a)  
Where the sealant was put between the panels, remove the sealant from the panel and the structure.

 (b)  
In the area of the canted pressure bulkhead and the center section upper wing, remove all contamination and clean the area.

 (c)  
Make sure that no contamination (e.g., nuts, washers, rivets or bolts) is in the drain valves.

 (d)  
Apply a layer of grease to the floor beams holes before you install the floor panel fasteners.

 NOTE: If clipnuts are used and were removed, then apply
____ a corrosion inhibiting compound to the floor structure at the clipnut location and install the new primed clipnuts (preferred BACN11K( ) optional BACN10YD ( )G). Be careful when you install the clipnuts to prevent scratches on the floor support structure.
　
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