(c)
You can use forced cure at high temperature and humidity on the coating procedure at 1 hour intermittent.
NOTE: The uncatalyzed coatings have too much cure time.
____
G. In Process Correction of Damaged Rain Erosion Coating
S 357-007
(1) Repair the small damage.
NOTE: Small nick, scratch, gouge, or other defect is small damage.
____
(a)
Cut the loose coating.
(b)
Use the sand paper with 180 grit or finer abrasive on the defect coating. Try not to use the sand paper on the laminate.
(c)
Clean the coating with toluene or xylene.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
51-24-17
ALL ú ú 02 Page 705 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(d) Apply the primer with the brush as it is necessary.
NOTE: Do not apply the primer on the polyurethane coating.
____
(e) Apply the topcoat with brush as it is necessary.
S 357-008
(2) Repair the big damage.
NOTE: Big bubbles on the coating, or the coating is incorrect are
____
big damage.
(a)
Use the cloths that are moist with with solvent, Series 94 (AMM 20-30-94/201) to remove the coating from the damaged area.
(b)
Put the plastic film on the damaged area to be removed.
(c)
Do the step (a) again until the removal is complete.
(d)
Do the damaged coating again refer to "Paint the Nose Radome" task.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
51-24-17
ALL ú ú 01 Page 706 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
ALUMINIZED EPOXY PRIMER - CLEANING/PAINTING
___________________________________________
1. General_______
A. This procedure contains two tasks:
(1)
The first task is to clean the surface before you apply the aluminized epoxy primer.
(2)
The second task is to apply the aluminized epoxy primer.
B. The aluminized epoxy primer is for use as an interior paint.
TASK 51-24-20-107-001
2. Clean the Surface To Apply Aluminized Epoxy Primer__________________________________________________
A. Consumable Materials
(1)
B00083 Solvent - Aliphatic Naphtha, TT-N-95
(2)
G00383 Paper - Abrasive, Aluminum Oxide, 320 grit
B. References
(1) AMM 51-21-03/701, Corrosion Removal and Control
C. Procedure
S 117-002
(1) To clean the surface to be apply with aluminized epoxy primer, do the steps that follow:
(a)
Clean the surface with aliphatic naphtha to remove the oil or grease.
(b)
Remove the corrosion if it is necessary (AMM 51-21-03/701).
TASK 51-24-20-307-003
3. Aluminized Epoxy Primer Apply_____________________________
A. Consumable Materials
(1)
C00324 Alodine - Clear, MIL-C-5541
(2)
C00000 Primer - Aluminized Epoxy, 463-6-4
(3)
C00325 Catalyst - X-306
(4)
B00189 Solvent - Thinner TL-52
B. References
(1) AMM 51-21-04/701, Alodized Surfaces
C. Procedure
S 377-006
WARNING:_______DO NOT GET ALODINE ON YOUR SKIN. THE ALODINE CONTAINS CHROMIC ACID. DO NOT LET THE ALODINE SOAKS THE CLOTHS TO DRY OUT BEFORE YOU DISCARD THE CLOTHS, THE ALODINE CAN CAUSE EXPLOSION.
(1)
Clean the bare aluminum surface with clear alodine (AMM 51-21-04/701).
S 377-005
(2)
To apply the aluminized epoxy primer to the surface, do the steps that follow:
(a) Mix the primer, three parts base and one part catalyst by volume.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址:747-400 AMM 飞机维护手册 结构 STRUCTURES(63)