(b)
Air cap No. 97
(c)
Fluid tip No. 97
(d)
Fluid pressure: 3-5 psi
(e)
Option: To reduce over-spray, a DeVilbiss touch up gun or equivalent can be used to apply the black arrow.
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B. Consumable Materials
(1)
White polyurethane walkway finish:
(a)
DeSoto series P1000, semi-gloss, BAC7022 white
(b)
Pumice Grit No. 1/2, American Pumice Company, P.O. Box 4305, Santa Fe, NM 87502, or Gallade Chemical, Inc., 1230 East Saint Gertrude Pl., Santa Ana, CA 92707 - Distributor
(2)
Black polyurethane walkway finish:
(a)
DeSoto series P1000, flat, BAC701 black
(b)
Pumice Grit No. 1/2, American Pumice Company, P.O. Box 4305, Santa Fe, NM 87502, or Gallade Chemical, Inc., 1230 East Saint Gertrude Pl., Santa Ana, CA 92707 - Distributor
(3)
Solvents
(a)
Methyl Isobutyl Ketone (MIBK), TT-M-268
(b)
Acetone, Technical, O-A-51
(4)
Paint strippers (any listed below or equivalent)
(a)
CEE BEE A-228D, McGean Chemical Company
(b)
Turco 5351, Turco Products
(c)
Pennwalt E-Z strip 19E, Pennwalt Corp.
(5)
Primers
(a)
BMS 10-79 Type III (preferred primer)
NOTE: Type III is preferred because it is not strippable and has better corrosion resistance than Type II.
(b)
BMS 10-79, Type II (alternate primer)
(6)
Enamel base coat
(a) BMS 10-60, Type II, semi-gloss white color, BAC7022
(7)
Alodine 600
(8)
Abrasive Paper - Aluminum Oxide, 320-grit (minimum)
(9)
Abrasive Pad - Scotchbrite, very fine, color - red/garnet
(10)
Brush - with applicable bristle material
(11)
Roller - short nap, smooth texture
(12)
Tape - masking
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C. References
(1) 51-21-41/701, Alodizing
D. Procedure
WARNING: DO NOT GET SOLVENTS IN YOUR MOUTH, OR YOUR EYES, OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM SOLVENTS. SOLVENTS ARE HAZARDOUS MATERIALS. REFER TO PRODUCT MATERIAL SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIREMENTS FOR PROPER HANDLING PROCEDURES.
(1)
Remove the existing nonskid finish with paint stripper.
(2)
Do this step to prepare the surfaces that have a coat of primer less than 48 hours old:
(a) Clean the surface with solvent.
(3)
Do these steps to prepare the surfaces that have a coat of primer more than 48 hours old:
(a)
Clean the surface with solvent.
(b)
Rub the surface lightly with 320-grit (minimum) aluminum oxide abrasive paper.
(c)
Clean the surface again with solvent.
(d)
Apply the BMS 10-79, Type III primer.
(4)
If the primer is removed and aluminum shows, do the steps that follow:
(a)
Clean the exposed surface with solvent.
(b)
Abrade surface with Scotchbrite abrasive pad to remove surface oxide.
(c)
Clean the exposed surface with solvent.
(d)
Apply Alodine 600 (Ref 51-21-41/701).
(e)
Apply the BMS 10-79, Type III primer.
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H22865 B58228 B58270
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504 Overwing Emergency Exit Walkway
Feb 20/93 Figure 701 (Sheet 1) 51-21-151
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Overwing Emergency Exit Walkway 504
51-21-151 Figure 701 (Sheet 2) Feb 20/93
Page 706
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(b)
Stir the base while you add the catalyst.
(c)
Add the flow control to the mixture at a rate no faster than 15 seconds per gallon.
(d)
If it is necessary, add the accelerator to the mixture.
