(2)
B00192 Solvent - BMS 3-2, type 1
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747-400 MAINTENANCE MANUAL
C. Procedure S 117-012
(1)
Apply solvent to bonding surfaces with a cheesecloth.
S 117-013
(2)
Rub with the necessary force to remove contamination you can see. S 117-014
(3)
Immediately dry surfaces with a lint-free cheesecloth.
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747-400 MAINTENANCE MANUAL
BONDING JUMPERS AND GROUND LEADS - REMOVAL/INSTALLATION
_______________________________________________________
TASK 20-11-15-004-016
1. Electrical Bonding - Jumpers and Ground Leads_____________________________________________
A. General
(1) Refer to SWPM 20-20-00 Electrical Bonding and Grounding in the Standard Wiring Practice Manual D6-54446.
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PRESSURE SENSITIVE VINYL PLACARDS - REMOVAL/INSTALLATION
________________________________________________________
1. General_______
A. This procedure contains one task. The task is the replacement of internal vinyl placards.
NOTE: Vinyl placards are prepared on a material that will not easily
____ follow the contour of rough or textured surfaces. The placard will touch only the high spots and have a poor bond. Use an adhesive with vinyl placards to get a smooth surface and a firm bond for the placard. Foil markers are made on a soft metal that, when applied, will have the contour of the surface and make a good bond. If the surface is textured, you can apply adhesive to get a smoother surface and more satisfactory installation of foil markers.
TASK 20-11-16-204-008
2. Replace the Placard___________________
A. General
WARNING: THE USE OF FLAMMABLE SOLVENTS IN THE INTERIOR OF THE AIRPLANE
_______ CAN LEAD TO A FIRE HAZARD. THEIR USE SHOULD BE AVOIDED IF POSSIBLE. IF FLAMMABLE SOLVENTS MUST BE USED, THEY ARE TO BE TRANSFERRED TO SMALL WASH BOTTLES OUTSIDE THE AIRPLANE, AND BROUGHT INTO THE AIRPLANE IN ONLY SMALL PLASTIC WASH BOTTLES. ATTACH A METAL OR PLASTIC TAG TO EACH BOTTLE IDENTIFYING THE SOLVENT. PROVIDE FOR ADEQUATE VENTILATION DURING SOLVENT CLEANING.
(1) Obey this WARNING during all of this task.
B. Consumable Materials
(1)
B00048 Detergent Cleaner - Spraywhite E
(2)
B00083 Solvent - Aliphatic Naphtha - TT-N-95
(3)
A00119 Adhesive - BMS 5-55
(4)
A00016 Adhesive Film - BMS 5-91
(5)
B000137 Sandpaper, medium grit
(6)
G00270 Masking tape
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(7)
G00033 Cheese Cloth - Woven BMS 15-5
C.
Remove the Placard
NOTE: If the placard is bonded firmly and the new placard is the same
____ size, you can install the new placard on the used placard.
S 024-002
(1)
Put a sharp knife or similar object under the edge of the placard and remove the placard from the adhesive area.
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