(4)
Burnishing Tool - commercially available
(5)
Sander/Polisher, Orbital, Air-Driven - commercially available
B. Consumable Materials
(1)
C00523 Alodine 1000 - MIL-C-5541
(2)
G00033 Cheesecloth - Woven, Rymplecloth No. 301
(3)
B00568 Compound - Cutting and Coloring, Schaffner No. 521, White Bar
(4)
B00567 Compound - Coloring, Schaffner No. 4094, Green Bar
(5)
D00281 Lubricant - Petroleum jelly
(6)
G02045 Pad - Scotch Brite, Fine or Ultrafine
(7)
B00569 Paste - Fine Polishing, Schaffner No. AS0410
(8)
B00570 Polish - Turco 1495-X
(9)
G00033 Wiper - BMS 15-5D, Class A
C. Reference
(1) AMM 51-21-04/701, Alodine Coating
D. Prepare to Polish the Surface
S 103-017
(1) Do the procedure to Clean the External Surfaces of the Airplane to clean the surfaces that you will polish.
E. Polish the Surface
S 603-045
WARNING:_______DO NOT POLISH THE STATIC PORTS. IF POLISHING MATERIAL ENTERS THE STATIC PORTS, IT MAY CAUSE LARGE ERRORS IN AIRSPEED-SENSING AND ALTITUDE-SENSING SIGNALS, WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
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747-400
MAINTENANCE MANUAL
(1) PROCEDURE I - Polish the surface to repair light stains or to make the surface bright.
(a)
Use the wiper to remove the outer layer of protection as necessary.
(b)
Manually or mechanically polish the surface as follows: 1) ALTERNATIVE I - Manually polish the surface. a) Apply AS-0410 fine polishing paste or Turco 1495-X
polish to the BMS 15-5D Class A wiper. b) Rub the damaged area of the surface with the wiper.
NOTE: Rub in the direction of the grain of the
____ metal until you get the necessary finish.
2) ALTERNATIVE II - Mechanically polish the surface. a) Apply AS-0410 fine polishing paste or Turco 1495-X polish to the BMS 15-5D Class A wiper. b) Polish the damaged area of the surface with the orbital, air-driven sander/polisher.
(c) Remove the remaining polish material with solvent and wipers.
NOTE: Always wipe in the direction of the grain of the metal.
____
(d) If necessary, use ALTERNATIVE I or II to polish the surface again.
NOTE: If the polished area is too bright, rub the area with
____ an ultrafine Scotch-Brite pad. Remove the dried polish with solvent and wipers.
(e)
Rub the area around the polished area to get a constant finish.
(f)
Do the procedure to Clean the External Surfaces of the Airplane in the polished area.
(g)
Put some water on the surface, and make sure the water becomes drops.
(h)
If the surface was conversion coated before it was polished, apply Alodine 1000 with a swab, cloth, or sponge (AMM 51-21-04/701).
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747-400 MAINTENANCE MANUAL
S 603-019
(2) PROCEDURE II - Polish the surface to remove heavy stains or scratches that do not penetrate the clad aluminum.
(a) Use these steps to find if the scratch penetrated the clad aluminum: 1) Apply BMS 3-2 cleaning solvent to a wiper. 2) Use the wiper to clean the area around the scratch. 3) Dry the surface. 4) Apply masking tape around the scratch.
NOTE: Make sure there is no more than 1/32 inch of bare
____ metal around the scratch.
WARNING: DO NOT GET CLAD PENETRATING SOLUTION IN YOUR EYES, ON
_______ YOUR SKIN, OR ON YOUR CLOTHES. IF YOU GET CLAD PENETRATING SOLUTION IN YOUR EYES, IMMEDIATELY FLUSH YOUR EYES WITH WATER. IF YOU GET CLAD PENETRATING SOLUTION ON YOUR SKIN, IMMEDIATELY FLUSH YOUR SKIN WITH WATER. MAKE SURE YOU WEAR SPLASH GOGGLES OR A FACE SHIELD. MAKE SURE YOU WEAR CHEMICAL RESISTANT GLOVES WHEN YOU PREPARE THE CLAD PENETRATING SOLUTION.
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