A
737-300/400/500MAINTENANCE MANUAL
(4)
After you remove the corrosion, it is a good procedure to apply a zinc-rich layer to give protection above the BMS 10-20 layer. The full zinc-rich surface has these layers:
(a)
A primer layer of BMS 10-20
(b)
A layer of the zinc-rich epoxy primer
(c)
A finish layer of BMS 10-20
(5)
For a small repair or to apply a general finish layer, it is not necessary to apply the primer coat of BMS 10-20.
B. Standard Tools and Equipment
WARNING: MAKE SURE THE CAPACITY OF THE EXHAUST FAN IS MORE THAN THE
_______ CAPACITY OF THE AIR BLOWER. THIS WILL MAKE SURE THERE IS A GOOD FLOW OF AIR. THE CORROSION RESISTANT FINISH IS A POISONOUS AND FLAMMABLE COMPOUND WHICH CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Explosionproof air blower, with sufficient flexible hose to reach all areas in the fuel tanks. The capacity must be 90-100 cubic feet per minute (Rhine Air, Inc., 10744 Prospect Avenue, Suite A, Santee, CA 92071)
(2)
Explosionproof centrifugal exhaust fan with 125-150 cubic feet per minute capacity and approximately 75 feet of 3-inch diameter flexible suction hose plus sufficient delivery hose to carry exhausted air outside hangar or work area (Rhine Air, Inc., 10744 Prospect Avenue, Suite A, Santee, CA 92071).
(3)
Respirator - Full face supplied air type, U.S. Bureau of Mines approved
(4)
Gloves - Neoprene or rubber (commercially available)
(5)
Vacuum cleaner - industrial type, pneumatically
powered, with attachments for cleaning fuel
tank interior (ATI Industries, 2425 West
Vineyard Ave., Escondido, CA 92029)
(6)
Spray Equipment - DeVilbiss Model MBC or JGA, The DeVilbiss Co., 300 Phillips Ave., Toledo, Ohio (Recommended for large area application of corrosion resistant finish)
(7)
Scrapers - wood or plastic, for the removal of loose paint
(commercially available)
(8)
Container - stainless steel, to contain alodine solution
(9)
Equipment - to apply alodine solution, brush, swab, spray gun, blotting paper, or cellulose sponge
(10)
Containers - to measure the volume of finish materials and catalyst, with graduations for volume measurement
(11)
Scale - balance, with a set of measured weights, accurate to |0.4 ounce (|10 grams), to measure the finish material and catalyst by weight
(12)
Cans - with lids to keep the mixed finish material temporarily
(13)
Spatulas - to mix small quantities of the finish material
(14)
Labels - to identify mixed quantities of the finish material kept in the cans
(15)
Shaker - Red Devil multidirectional
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
C.
D.
E.
A
737-300/400/500MAINTENANCE MANUAL
(16)
Cloths - all material must contain less than 0.75% oil by carbon tetrachloride extraction (Ref 20-30-31)
(a)
Cheesecloth
(b)
Unsterilized gauze pads
(c)
White ragsConsumable Materials
(1)
G00250 - Tape, Pressure Sensitive, 1-inch width 3M No. 250, Minnesota Mining and Mfg. Co. (Ref 20-30-51)
(2)
G00381 - Abrasive paper, 100 to 400 grit aluminum oxide, wet or dry
(3)
B00102 - Disks - abrasive, 100 to 400 grit, 3M Scotchbrite, Minnesota Mining and Mfg. Co.
(4)
One of these solvents:
(a)
B00184 - cleaning solvent, pre-sealing - BMS 11-7 (preferred)
(b)
50-50% Mix of these two solvents:
1) B00153 - Toluene TT-M-261
2) B00148 - Methyl Ethyl Ketone TT-T-548
(c)
B00148 - Methyl Ethyl Ketone (MEK), TT-T-548 (2nd option)
