S 114-003

 (2)  
Remove remaining adhesive film with Freon TF , Isopropyl Alcohol, Ethyl Alcohol, or naphtha cleaner.

 D.
Prepare the Placard for Installation

 S 804-015
 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)  
If the placard has an indication that BMS 5-91 adhesive is used, no special placard preparation is necessary. Continue to the installation.

 S 844-005

 (2)
If the placard has no backing adhesive, prepare placard as follows:

 (a)  
Make the rear surface of the placard rough with sandpaper.

 (b)  
Clean the placard with naphtha cleaner.

 (c)  
Remove release paper from one side of the BMS 5-91 adhesive film and apply to rear of placard. Remove unwanted film.

 (d)  
Laminate adhesive film to the placard with one of these steps: 1) Roll placard on hot roll laminator heated to 140°F. 2) Heat the placard to not more than 140°F with a dry air

 blast or other applicable source and rub release paper with a cheesecloth.
 NOTE: Heat makes the adhesive to release paper bond soft.
____ Be careful not to move the release paper.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 20-11-16
 ALL  ú ú 01 Page 402 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 844-006
 (3)  If the placard has an adhesive backing other than BMS 5-91, prepare placard as follows:
 NOTE: This step is not necessary but it does make sure the adhesive
____
 film is firmly bonded to the placard.

 (a)  
Remove the release paper from the rear of the placard.

 (b)  
Remove the release paper from one side of the BMS 5-91 adhesive film and apply adhesive film to the rear of the placard. Remove unwanted film.

 (c)  
Laminate adhesive film to the placard with one of these steps: 1) Roll placard on hot roll laminater heated to 140°F. 2) Heat placard to not more than 140°F with a dry air blast or

 other applicable source and rub release paper with a cheesecloth.
 NOTE: Be careful not to move the release paper.
____
 E. Install the Placard
 NOTE: If you install the new placard over a placard or on cured
____
 adhesive, do not do steps 2-4 and 7.

 S 114-007
 (1)  Clean the surface with cleaner or detergent. Dry fully.
 S 954-008
 CAUTION:_______MAKE SURE THE MASKED AREA IS IN THE CORRECT POSITION. YOU CAN REMOVE DRY ADHESIVE WITH NAPHTHA CLEANER. IF YOU TRY TO REMOVE CURED ADHESIVE, YOU WILL CAUSE DAMAGE TO THE SURFACE.
 (2)  
Mask an area approximately 1/16 inch smaller than placard with masking tape or attach a mask of necessary size.

 S 804-014

 (3)
Use a brush to apply one layer of adhesive to the prime contact area. Let adhesive dry fully (approximately 15 minutes).

 (4)  
Remove masking tape or mask.

 S 424-011

 (5)  
Remove release paper from the placard. Put the placard on the center of the primed surface. Apply to the surface but be careful to prevent air pockets.

 S 954-010
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 20-11-16
 ALL  ú ú 01 Page 403 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 (6)  S 424-012To attach the placard fully, rub with firm hand pressure and a cheesecloth pad.
 (7)  S 114-013If the primed surface shows around the placard, remove unwanted adhesive with naphtha cleaner.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 STANDARD PRACTICES - AIRFRAME(67)