(a)
B00285 Kelite Process K
(b)
B00288 Turco W.O.1
(c)
B00162 Oakite 36
(13)
B00046 Remover - Corrosion, Phosphoric Acid Type (for steel)
(a)
B00447 GMC 801
(b)
B00285 Kelite Process K
(c)
B00170 Oakite 31
(d)
B00171 Turco Prepaint
(14)
E00074 Stripper - Inorganic Sodium Dichromate - Sulfuric Acid
(15)
C00000 Solution - Dow 1
(16)
C00015 Coating - Conversion - Dow 19
(17)
B00000 Potassium - Dichromate
(18)
B00385 Sulphate - Calcium (powder)
C. References
(1)
AMM 51-21-02/701, Interior and Exterior Finishes (Prepaint Cleaning Cleaning and Pretreatment
(2)
AMM 51-24-13/701, Water Displacing Corrosion Preventive
D. Procedure
S 107-002
CAUTION: DO NOT LET ACID BRIGHTENERS FOR ALUMINUM AND PHOSPHORIC ACID
_______ CORROSION REMOVERS FALL ON OR TOUCH TEFLON-LINED SELF-LUBRICATED BEARINGS, ELECTRICAL TERMINAL PLUGS, NYLON-COATED WIRES, NYLON BUSHINGS, OR WHITE-THERMAL PROTECTIVE FINISHES. THE CHEMICALS IN THESE MATERIALS CAN CAUSE DAMAGE TO THESE COMPONENTS.
(1) Do the subsequent steps to remove aluminum corrosion from the external surface of the airplane:
(a) Put the airplane in an area where you can fully and quickly flush all the surfaces with water.
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(b)
Remove all the grease, oil and loose paint from the surface (AMM 51-21-02/701).
(c)
Add three parts (by volume) of water to Kelite L-20 and Metal Glo No. 2.
CAUTION: KEEP THE ACID BRIGHTENER SOLUTION AWAY FROM NONCLAD
_______ ALUMINUM ALLOYS, STEEL THAT WAS PREPARED OVER 180,000 PSI, FABRIC, AND PLASTIC. DAMAGE CAN OCCUR IF THE ACID BRIGHTENER SOLUTION TOUCHES THOSE MATERIALS. IF THE ACID BRIGHTENER SOLUTION TOUCHES FABRIC OR PLASTIC SURFACES, YOU MUST IMMEDIATELY FLUSH THE FABRIC OR PLASTIC SURFACES WITH WATER. IF YOU LET THE ACID BRIGHTENER SOLUTION DRY ON FABRIC OR PLASTIC SURFACES, DAMAGE TO THE SURFACE CAN OCCUR.
(d) Apply the acid brightener solution to small areas. Start from the lower surfaces and continue up the surface.
CAUTION: DO NOT LET THE SOLUTION STAY ON THE SURFACE FOR MORE THAN
_______
30 MINUTES. IF THE SOLUTION IS ON THE SURFACE FOR MORE
THAN 30 MINUTES, DAMAGE TO THE SURFACE CAN OCCUR.
(e) Keep the solution on the surface for 5 to 30 minutes.
NOTE:____ Do not use the solution during temperatures above 100°F
or below 45°F.
(f) Mix the solution regularly with a brush. A nylon brush is
recommended.
(g) Keep the surface wet with the solution.
(h)
Lightly flush the surface with water when you apply the last layer of solution.
(i)
Fully flush the surface with high pressure water.
(j)
Do the same steps for the remaining areas of the airplane. Always start from the bottom surface and continue up to the top surface.
NOTE:____Apply the solution to small areas. If you apply the solution to areas that are too large, the solution will dry and you will get an unsatisfactory result.
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(k) Fully flush all of the area, the prepared and the adjacent areas, with water.
NOTE: Make sure that you flush out all the solution from the
____ wheel well areas, the skin seams, and all other holes on the surface.
(l)
Apply Alodine 1000 to the areas of the clad aluminum which are to be painted.
(m) 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(22)
