(e)
Let the cleaner soak for approximately 5 minutes. Apply the cleaner again if necessary to keep the surface wet.
(f)
Rub the surface with a brush to help remove unwanted material.
(g)
Flush the surface with clean, warm water (160°F maximum).
CAUTION: MAKE SURE YOU FLUSH THE SURFACE SUFFICIENTLY TO REMOVE ALL OF THE CLEANER. THE CLEANER CAN CAUSE CORROSION IF IT IS NOT REMOVED COMPLETELY FROM THE AIRPLANE SURFACE.
(h)
Dry the wet surface with air or towels.
(2) Remove Moderately Heavy Material (oil and mud) from Smooth Surfaces
(a)
Move the flaps to the fully retracted position.
NOTE: To clean the flaps in the extended position, refer to the Remove Material Around Sensitive Components procedure.
(b)
Mix the solvent emulsion cleaner from Table II.
WARNING: KEEP THE CLEANING SOLVENT THAT IS USED IN THE SOLVENT EMULSION CLEANERS AWAY FROM SOURCES OF HEAT. THE CLEANING SOLVENT IS FLAMMABLE.
(c)
Mix the cleaner until it is thick and creamy.
(d)
Apply a heavy layer of cleaner to the applicable area with not-atomizing spray equipment, mop, and brushes.
501
May 01/98 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 12-40-0 Page 213
WARNING: DO NOT USE HIGH-PRESSURE SPRAY EQUIPMENT TO CLEAN MECHANICAL, ELECTRICAL, OR HYDRAULIC COMPONENTS. LIQUIDS THAT GET INTO THESE AREAS CAN CAUSE CORROSION, FREEZE DURING AIRPLANE FLIGHT, OR REMOVE NECESSARY LUBRICANTS.
CAUTION: KEEP THE NOZZLE OF THE SPRAY EQUIPMENT MORE THAN 12 INCHES AWAY FROM THE SURFACE OF THE AIRPLANE. THE SPRAY CAN CAUSE DAMAGE TO THE SURFACE.
(e)
Let the cleaner soak for 5 - 10 minutes. Do not let the cleaner dry on the surface.
(f)
Rub the surface with a brush to help remove unwanted material.
(g)
Flush the surface with clean, warm water (160°F maximum).
CAUTION: MAKE SURE YOU FLUSH THE SURFACE SUFFICIENTLY TO REMOVE ALL OF THE CLEANER. THE CLEANER CAN CAUSE CORROSION IF IT IS NOT REMOVED COMPLETELY FROM THE AIRPLANE SURFACE.
(h)
Dry the wet surface with air or towels.
(3) Remove Moderately Heavy Material (oil and mud) from Smooth Surfaces
(a) Use the procedure to Remove Moderately Heavy Material (oil and mud) from Smooth Surfaces with these changes: 1) Use a heavy duty cleaner from Table III. 2) Let the cleaner soak for 15 minutes maximum. 3) For stains that are not removed by the cleaners in Table III, use Ceebee
Majorclean.
CAUTION: USE CEEBEE MAJORCLEAN WITH CARE. THE ABRASIVES IN THIS CLEANER CAN REMOVE THE LUSTER ON CLAD ALLUMINUM. THE CLEANER CAN ALSO DECREASE THE CORROSION RESISTANCE OF ANODIXED ALLUMINUM.
(4) Remove Material Around Sensitive Components
(a)
Open the landing gear doors, and install the door locks (Ref. 32-00-01).
WARNING: REFER TO 32-00-01 TO INSTALL THE DOOR LOCKS FOR THE LANDING GEAR. THE DOORS CAN FALL AND CAUSE INJURY OR DAMAGE IF THE LOCKS ARE NOT INSTALLED CORRECTLY.
(b)
If you will clean the flaps, extend them to the fully down position.
(c)
Mix the water-base alkaline cleaner from Table I for the condition of the surface that you will clean. For heavy material (grease and exhaust particles), mix the heavy duty cleaner from Table III.
(d)
Apply the cleaner to the applicable area with swabs or brushes.
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CAUTION: DO NOT USE HIGH-PRESSURE SPRAY EQUIPMENT. HIGH-PRESSURE SPRAY EQUIPMENT CAN PUT LIQUIDS INTO BEARINGS, JOINTS, BRAKES, ELECTRICAL CONNECTORS, AND OTHER SEALED COMPONENTS. LIQUIDS THAT GET INTO THESE AREAS CAN CAUSE CORROSION, FREEZE DURING AIRPLANE FLIGHT, OR REMOVE NECESSARY LUBRICANTS.
NOTE: To prevent scratches on the surface, soak the brushes in the cleaner before you use them.
(e)
Let the cleaner soak for approximately 5 minutes. Apply the cleaner again if necessary to keep the surface wet.
(f)
Carefully rub the surface with a clean brush to help remove unwanted material.
CAUTION: DO NOT REMOVE THE LAYER OF GREASE FROM MECHANICAL JOINS. THIS GREASE LUBRICATES THE JOINT AND PREVENTS CORROSION.
(g)
Flush the surface with clean, warm water (160°F maximum).
CAUTION: FLUSH THE SURFACE SUFFICIENTLY TO REMOVE ALL OF THE CLEANER. THE CLEANER CAN CAUSE CORROSION IF YOU DO NOT FULLY REMOVE FROM THE AIRPLANE SURFACE.
(h)
Dry the wet surface with air or towels.
(i)
Lubricate all bearings and joints in the cleaned area (Ref. Chapter 12).
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