................................................................................ | | | CLEANING | | CLEANER | WATER | SOLVENT | ................................................................................ | WATER-BASE EMULSION | | | | CLEANER | 2 | 5 TO 6 | 2.............................…....................…...........................1
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747-400 MAINTENANCE MANUAL
(15) This Table is for Heavy Duty Cleaners.
~.............................................................................. | | DILUTION RATIO: NUMBER OF VOLUMES | | | OF WATER OR CLEANING SOLVENT TO | | | ONE VOLUME OF CLEANER | ................................................................................ | | | CLEANING | | CLEANER | WATER | SOLVENT | ................................................................................ | B00022 AIRSHOW W | 5 TO 15 | | 2.............................…....................…...........................1
D. References
(1)
AMM 20-41-01/201, Static Grounding
(2)
AMM 32-00-30/201, Landing Gear Door Ground Operations and Locking Procedure
E. Prepare to Clean the Airplane
NOTE: Be careful when you clean the airplane in very hot weather.
____ The heated surface of the airplane can dry the cleaners before you can flush them with water. The dried cleaners can stain the surface.
S 503-002
WARNING: KEEP ALL OF THE EQUIPMENT THAT YOU USE WITH FLAMMABLE SOLVENTS
_______ AWAY FROM SOURCES OF HEAT. IF THERE IS WIND, MAKE SURE THE SOLVENTS DO NOT FALL ON ELECTRICAL EQUIPMENT OR WARM COMPONENTS.
(1)
Move all of the equipment that you will use with flammable solvents away from sources of heat.
(2)
Statically ground the airplane (AMM 20-41-01).
S 863-003
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747-400 MAINTENANCE MANUAL
S 843-004
(3) Close all of the passenger doors, cargo doors, emergency exits, and access doors and panels.
NOTE: If the doors cannot be closed because of other servicing, be
____
careful that no fluid gets into the cabin area.
S 843-029
WARNING: WHEN THE PITOT STATIC PROBES ARE COVERED, MAKE SURE THAT
_______ CONDITION IS VISIBLE FROM THE GROUND. IN ADDITION, ATTACH A TAG TO THE LEFT CONTROL WHEEL IN THE FLIGHT DECK AS A REMINDER THAT PITOT STATIC PROBES ARE COVERED. FAILURE TO OBSERVE AND REMOVE COVERINGS OVER 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: WHENEVER AN OPENING IS COVERED, MAKE SURE THAT CONDITION IS
_______ VISIBLE FROM THE GROUND. ENGINES SHOULD NOT BE OPERATED WITH COVERS IN PLACE BECAUSE THE COVERS CAN COME OFF AND DAMAGE THE ENGINES.
CAUTION: USE COVERS, BLACK POLYETHYLENE SHEET AND YELLOW VINYL ADHESIVE
_______ TAPE TO KEEP LIQUIDS OUT OF AREAS THAT CONTAIN MECHANICAL, ELECTRICAL, OR HYDRAULIC COMPONENTS. LIQUIDS THAT GET INTO THESE AREAS CAN CAUSE CORROSION, FREEZE DURING AIRPLANE FLIGHT, OR REMOVE NECESSARY LUBRICANTS.
CAUTION: MAKE SURE THE PITOT-STATIC PROBE COVERS ARE IN GOOD WORKING
_______ CONDITION WITH NO EVIDENCE OF DAMAGE, ESPECIALLY FRAYING AROUND THE COVER OPENING. FRAYED FIBERS FROM THE COVER COMBINED WITH OTHER SUBSTANCES SUCH AS DIRT, GREASE AND FLUIDS CAN CAUSE OBSTRUCTION IN THE PROBE.
(4) Put the covers on these components:
(a) Pitot static probes (see Fig. 301 for locations of pitot static probes)
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