fluid ounces Hughson 9989 per one quart of paint). 2) The mixture is now ready to spread.
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747-400 MAINTENANCE MANUAL
E. Apply the Enamel to the Floor Surface
S 377-049
(1) Pour the mixture onto the floor area to be painted. Spread the mixture with a semi-textured roller.
NOTE: Dry at a temperature above 70°F for 24 hours.
____ If the temperature is below 70°F, supply heat to the area from an external source.
F. Repair the Minor Damage
S 117-050
(1) Clean the area to be repaired as follows:
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. SOLVENTS MAY BE FLAMMABLE OR HARMFUL TO THE ENVIRONMENT. REFER TO PRODUCT MATERIAL SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIREMENTS FOR PROPER HANDLING PROCEDURES.
(a)
Make the cheesecloth wet with solvent, Series 87 (AMM 20-30-87/201).
(b)
Apply MEK to the damaged area with the cheesecloth to remove all of the particles on the surface.
NOTE:____Do not rub surface. The surface can damage the cheesecloth.
S 147-051
(2) Use a power disc sander with 60 grit (minimum grit number) abrasive paper to remove all grit and layers in the repair area. Smooth the edges of the damage, if it is necessary.
NOTE: Make sure you protect the aiplane interior from dust and
____ particles when you power sand the surface..
S 117-052
(3)
Use a cheesecloth that is wet with 1,1,1 Trichloroethylene to remove particles from the surface.
S 377-053
(4)
Mix BMS 10-60, Type II, enamel or Hughson V series chemglaze with the instructions given in par. D.
S 377-065
(5)
Apply enamel to the floor surface with the instructions given in par. E.
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HEAT, WEATHER, AND OIL RESISTANT COATING - REPAIRS
__________________________________________________
1. General
_______
A. This procedure contains one task:
(1) The task is to repair the BMS 14-4 Type 1 coating.
B. The BMS 14-4 Type 1 is a weather, oil, and heat resistant protective coating cured at a high temperature. The BMS 14-4 Type 2 gives the same protection as the BMS 14-4 Type 1 coating. The BMS 14-4 Type 2 uses catalyst and cures at room temperatures.
C. You can repair the BMS 14-4 Type 1 coating satisfactorily with the use of the catalyst cured repair materials. You permit to have an overlap of the coating as long as the maximum layer thickness of the coating is not more than the allowance.
TASK 51-24-10-308-001
2. Repair BMS 14-4 Type 1
______________________
A. Equipment
(1) Tester - Film Thickness (Permascope No. EC3, Twin Cities Testing Corporation, North Tonawanda, New York) or equivalent
B. Consumable Materials
(1)
G00268 Brush - Paint, Soft bristle
(2)
G01043 Cloth - Lint-free
(3)
B00192 Solvent - BMS 3-2, type I
(4)
G00381 Paper - Abrasive, Aluminum oxide, 180-grit
(5)
C00251 Coating - BMS 14-4, type 2
C. Prepare the surface for repair.
S 118-002
WARNING:_______THE SOLVENTS CONTAIN TOXIC AND/OR FLAMMABLE INGREDIENTS. GET INSTRUCTIONS FROM THE INDUSTRIAL HYGIENE, FIRE, AND/OR SAFETY ORGANIZATIONS ON FACILITIES, EQUIPMENT, VENTILATION, AND OTHER NECESSARIES FOR SAFE OPERATIONS.
CAUTION: DO NOT LET THE SOLVENTS TO STAY IN THE FAYING SURFACES AS THE
_______
SOLVENTS CAN CAUSE CORROSION.
(1)
Use the cloth that is moist with solvent to rub the repair and overlap area to remove the dirty surface.
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