70-40-01
ú ALL ú
ú ú ú C01.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 209Jul 12/02
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(b)
Remove the background fluorescence with a clean cloth that is moist with water.
(c)
Examine the part below the ultraviolet light to make sure you remove the unwanted penetrant.
(d)
If you continue to get too much unwanted fluorescence, apply the water with a squeeze bottle to clean the part.
NOTE: You must be careful to apply a minimum quantity of water
____ because too much water will remove the indication penetrant.
S 232-022-C00
(5) Apply the Developer.
WARNING:_______DO NOT BREATHE THE FUMES FROM THE DEVELOPER. THE DEVELOPER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(a) Apply the developer with a spray, only to a dry part at ambient temperature. 1) Hold the spray nozzle approximately 8-10 inches
(200-250 mm) from the part surface. 2) Apply a fine, thin, layer of developer. 3) Usually 2 layers are sufficient. 4) Apply a constant layer. 5) You must see a metallic background through the developer.
NOTE: When you use an aerosol container, follow the
____ manufacturer's directions.
(b) Let the developer absorb the penetrant for 10 to 60 minutes.
S 232-023-C00
(6) The Inspection of the Parts
(a)
Point the ultraviolet light on the part while in the inspection booth or darkroom or below a black-cloth hood.
(b)
Examine the parts of the all the limits given for the parts.
(c)
Examine all indications you are not sure of as follows:
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70-40-01
ú ALL ú
ú ú ú C01.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 210Jul 12/02
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
WARNING: DO NOT GET CLEANING SOLVENTS IN YOUR MOUTH OR EYES,
_______ OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM THE CLEANING SOLVENT. PUT ON A PROTECTIVE SPLASH GOGGLE AND GLOVES WHEN YOU USE THE CLEANING SOLVENT. KEEP THE CLEANING SOLVENT AWAY FROM SPARKS, FLAME AND HEAT. CLEANING SOLVENT IS A POISONOUS AND FLAMMABLE SOLVENT WHICH CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
1) Use a cotton swab or a fine-hair, art brush to rub the area, one time, with a solvent from the consumable materials shown.
2) Let the solvent dry. a) Apply the developer to the area you think is damaged. 3) Examine the part below the ultraviolet light. a) Indications that come into view in less than two minutes are correct indications. 4) If the indications do not come into view again, examine the part below the white light with a 10-power magnifying lens.
(d) Identify the location of the defects.
1) Make a mark on the location of the defects with an approved marking procedure.
S 232-024-C00
(7) Clean the Parts after the Inspection.
CAUTION: REMOVE ALL THE REMAINING PENETRANTS AND DEVELOPER MATERIAL
_______ FROM THE PART WHEN YOU CAN. MATERIAL THAT YOU DO NOT REMOVE CAN CAUSE BAD CORROSION OF THE PARTS AT THE HIGHER TEMPERATURES.
WHEN YOU CLEAN THE PARTS MADE OF TITANIUM OR TITANIUM ALLOYS WITH SOLVENT, USE ONLY THE SOLVENTS THAT DO NOT CONTAIN HALOGENS.
WHEN YOU CLEAN THE PARTS MADE OF TITANIUM OR TITANIUM ALLOYS WITH WATER, USE ONLY DEIONIZED WATER.
(a) Clean the part with a water spray or with a brush and water to remove the developer and the penetrant.
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70-40-01
ú ALL ú
ú ú ú C01.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 211Jul 12/02
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
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