CAUTION: YOU MUST LUBRICATE ALL THE BEARINGS AND JOINTS IN THE AREA YOU CLEANED. THE LUBRICANT WILL REMOVE THE UNWANTED FLUIDS WHICH COULD FREEZE, OR CAUSE CORROSION TO THE BEARING OR THE JOINT. IF YOU DO NOT LUBRICATE THE BEARINGS AND JOINTS, DAMAGE TO THE COMPONENTS CAN OCCUR.
(j)
Remove the door locks for the landing gear, and close the landing gear doors (Ref. 32-00-01).
WARNING: REFER TO 32-00-01 TO REMOVE THE DOOR LOCKS FOR THE LANDING GEAR. THE DOORS CAN FALL AND CAUSE INJURY OR DAMAGE IF THE LOCKS ARE NOT REMOVED CORRECTLY.
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(5) Remove Unwanted Hydraulic Fluid
(a)
Clean the unwanted hydraulic fluid with a mop or rags.
(b)
Use the MIL-T-81533A degreasing fluid to clean the hydraulic fluid from warm components.
CAUTION: DO NOT USE WATER OR CLEANERS THAT CONTAIN FLAMMABLE SOLVENTS TO CLEAN WARM COMPONENTS.
(6) Clean with Foam
NOTE: Use foam when it is possible that the cleaner will stay on the surface for up to 15 minutes.
(a)
Fill the tank of the foam generator. Use a liquid that contains one part of cleaner (from Table I or Oakite 74L) and 10 to 20 parts of water.
NOTE: If you do not have a foam generator, mix the liquid quickly to make foam.
(b)
Apply water to the area you will clean.
CAUTION: 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.
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.
(c)
Apply a heavy layer of foam cleaner.
(d)
Let the cleaner soak for 5 to 15 minutes. Apply the cleaner.
(e)
Rub the surface with a brush to help remove unwanted material.
(f)
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.
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12-40-0 Page 216 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 01/98
(7) Clean acrylic windows (passenger cabin and cockpit side window)(if applicable).
(a)
Remove loosely adhering dirt and grit from the window by flushing with water free of dirt and abrasive materials.
(b)
Wash with non-abrasive soap and water. A soft, thoroughly clean cloth, sponge, or chamois may be used in washing, but only as a means of carrying the soapy water to the plastic. Go over the surface only with the bare hand so that any abrasive can be quickly detected and removed before it scratches the plastic surface.
NOTE: All rubbing operations on acrylic plastics shall be done with as light a pressure as possible.
(c)
Dry the window with a clean damp chamois. A clean, soft cloth or tissue may be used if care is taken not to rub the plastic after the surface is dry.
CAUTION: RUBBING THE PLASTIC SURFACE WITH A DRY CLOTH WILL CAUSE SCRATCHES AND BUILD UP AN ELECTROSTATIC CHARGE WHICH ATTRACTS DUST PARTICLES.
(d)
Remove oil and grease by rubbing lightly with a clean cloth wetted with any of the cleaners listed in Table I.
CAUTION: DO NOT USE THE FOLLOWING MATERIALS ON ACRYLIC PLASTICS:
GASOLINE, ALCOHOL, BENZINE, HEXANE, XYLENE, ACETONE, CARBON TETRACHLORIDE, FIRE EXTINGUISHER OR DEICING FLUIDS, LACQUER THINNERS, OR WINDOW CLEANING SPRAYS BECAUSE THEY SOFTEN THE PLASTIC AND/OR CAUSE CRAZING.
(8) Glass Window Cleaning (Control Cabin)
(a)
Check that power is off in window heating circuit.
WARNING: OUTPUT VOLTAGE OF AUTOTRANSFORMER RANGES FROM 250 TO 350 VOLTS. BE CAREFUL WHEN WORKING ON CONTROL CABIN WINDOWS.
(b)
Wash with a mild, nonabrasive detergent soap solution. Apply detergent solution with a clean, soft cloth or sponge. Rub with as light pressure as possible. Rinse and wipe dry. Avoid excessive rubbing when dry.
(c)
As an alternative to step (b) in subfreezing temperatures, clean windows with isopropyl alcohol.
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