51-21-94
ALL ú ú B01 Page 704 ú Mar 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
(c)
Do not touch or move the mixture for a minimum of 5 minutes before you use it.
(d)
Do not use Tereco 155 with the expired pot life (Fig. 701).
(e)
Remove material with the expired pot life.
(f)
Do not mix more Tereco 155 than you can use (Fig. 701).
S 957-006-B00
(2)
Apply tape or covers on areas adjacent to the work area.
S 377-006-B00
(3)
Apply the abrasion resistant finish.
(a)
Apply one or more layers of Tereco 155 with a brush or a spray gun.
(b)
Let the finish dry between each layer.
(c)
Make sure the dry layer is 0.003-0.020 inch thick.
(d)
Let the finish dry for a minimum of 8 hours at 70° |5°F before you touch the surface or part.
(e)
Let the finish dry for a minimum of 12 hours before flight.
(f)
Before assembly, use the time-temperature conditions to dry the finish (Fig. 702, Curve A).
(g)
Before functional movement of parts, use the time-temperature conditions to dry the finish (Fig. 702, Curve B).
(h)
Remove all of the sharp paint edges with a hardwood stick or other applicable tool.
NOTE: The shelf life of Tereco 155 is 6 months from the
____
manufacture date.
(i) Make sure not to cause damage to the aluminum skin.
E. Repair and Rework Damaged Surfaces
S 357-007-B00
(1) Rework areas where it is necessary.
(a)
Clean the surfaces (Refer to par. 2.C.).
(b)
Apply the abrasion resistant finish (Refer to par. 2.D.).
(c)
Remove all of the sharp paint edges with a hardwood stick or other applicable tool.
S 357-008-B00
(2) Repair the damaged areas of the abrasion resistant finish.
(a)
Rub the surface with 280-grit (minimum) aluminum oxide paper. 1) If primer BMS 10-11, Type 1, has scratches after this step, apply the primer again.
2) Repair the aluminum surfaces that have scratches (Refer to paragraphs 2.D. and 2.E.)
(b)
Clean the area with a wet cheesecloth that is moist with toluene.
(c)
Apply abrasion resistant finish (Refer to par. 2.D.).
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51-21-94
ALL ú ú B01 Page 705 ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
SKIN AND FASTENER CORROSION REMOVAL AND CONTROL -
_________________________________________________ CLEANING/PAINTING
_________________
1. General_______
A. This procedure contains five tasks. The tasks are as follows:
(1)
The removal of rust and corrosion
(2)
The alodine treatment
(3)
The application of the fastener sealant
(4)
The application of the corrosion preventive paint.
B. The skin and the fastener corrosion control procedures are applicable to the subsequent areas (Fig. 701):
(1)
The wing upper inspar surface
(2)
The wing-to-body splice areas (upper and lower) that include the fasteners and the splice plates
(3)
The lower skin of the wing center section that is a wall of the ram air plenum chamber.
C. There are two primer systems. The first system is the MIL-C-8514 wash primer with the MIL-P-8585 zinc chromate primer. The second system is the BMS 10-11, Type 1, and the BMS 10-20 (epoxy) primer.
(1)
Chemical paint strippers can remove the MIL-C-8514 wash primer and MIL-P-8585 zinc chromate primer to bare metal (Ref 51-21-11/701).
(2)
Chemical paint strippers cannot remove the BMS 10-11, type 1 and BMS 10-20 primers. But, it is not necessary to remove these epoxy primers to bare metal before you can apply the finish coating.
TASK 51-21-95-107-022-B00
2. Rust and Corrosion Removal__________________________
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