747-400 AMM 飞机维护手册 SERVICING 2(101)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 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.
 (b)  
Apply water to the area that you will clean.

 (c)  
Apply a heavy layer of foam cleaner.

 (d)  
Let the cleaner soak for 5 to 15 minutes. Apply the cleaner again if necessary to keep the surface wet.

 (e)  
Rub the surface with a brush to help remove unwanted material.

 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.
 (f)  
Flush the surface with clean, warm water (160°F maximum).

 (g)  
Dry the wet surfaces with air or towels.

 G. Put the Airplane Back In Its Usual Condition
 S 843-034
 WARNING: FAILURE TO REMOVE COVERS FROM PITOT STATIC PROBES BEFORE FLIGHT
_______ MAY CAUSE LARGE ERRORS IN AIRSPEED-SENSING AND ALTITUDE-SENSING SIGNALS WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
 CAUTION:_______REMOVE ALL COVERS. ENGINES SHOULD NOT BE OPERATED WITH COVERS IN PLACE BECAUSE THE COVERS CAN COME OFF AND DAMAGE THE ENGINES.
 (1) Remove covers from the following components:
 (a)  Pitot static probes
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 12-25-01
 ALL  ú ú 01B Page 318 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (b)  
Angle of Attack Sensor

 (c)  
Engine inlet, fan exhaust, and turbine exhaust

 (d)  
Brakes

 (e)  
Tires

 S 843-035
 (2)  Remove the PITOT PROBES COVERED tag from the left control wheel in the flight deck.
 S 843-036
 WARNING: FAILURE TO REMOVE BARRICADE TAPE AND VINYL ADHESIVE TAPE FROM
_______ STATIC PORTS BEFORE FLIGHT MAY CAUSE LARGE ERRORS IN AIRSPEED-SENSING AND ALTITUDE-SENSING SIGNALS, WHICH MAY LEAD TO LOSS OF SAFE FLIGHT.
 CAUTION: REMOVE ALL BARRICADE TAPE, COVERS, POLYETHYLENE SHEET AND VINYL
_______ ADHESIVE TAPE. ENGINES SHOULD NOT BE OPERATED WITH COVERS IN PLACE BECAUSE THE COVERS CAN COME OFF AND DAMAGE THE ENGINES.
 (3)  Remove all barricade tape, covers, polyethylene sheet and vinyl adhesive tape from the following openings:
 (a)  
Static Ports

 1)  Inspect each static port and if necessary use naphtha or equivalent, and a clean dry rag to remove all tape residue, dirt and other contaminants around the static port.

 (b)  
Surge tank and fuel tank vents

 (c)  
APU exhaust duct outlet port

 (d)  
APU oil cooling air exhaust port

 (e)  
Overboard exhaust valve port

 (f)  
Ram air inlet and outlet doors

 (g)  
Forward and aft outflow valves

 S 843-037
 (4)  Remove the STATIC PORTS COVERED tag from the left control wheel in the flight deck.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 12-25-01
 ALL  ú ú 02B Page 319 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 TASK 12-25-01-103-016
 3.  Polish the External Surfaces of the Airplane____________________________________________
 A. Equipment
 (1)  
Bonnet, Wool Pile - commercially available

 (2)  
Buffer Wheel, Cotton cloth, 80/92 thread count, Spiral sewn, 4- or 6-inch diameter, 5/8- or 7/8-inch thick, 1/4-inch diameter arbor hole - commercially available

 (3)  
Buffer Wheel, Hard Cloth, machine sewn, bias-type, 7 x 3 x 5/8-inch, 16 Ply - commercially available
　
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