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 ú
 ú  IF YOU DO NOT OBEY THESE INSTRUCTIONS, DAMAGE TO THE PARTS
 ú  CAN OCCUR.
 ú
 ú  (a) Remove developer and penetrant by water spray washing or
 ú  scrubbing the part with brush and water.
 ú 
        ú
 WARNING: CLEANING SOLVENTS ARE FLAMMABLE, VOLATILE, AND TOXIC._______
 ú  THEY SHOULD BE USED WITH ADEQUATE VENTILATION. AVOID
 ú  PROLONGED BREATHING OF VAPORS AND REPEATED OR PROLONGED
 ú  CONTACT WITH THE SKIN OR CLOTHING.
 ú
 ú  (b) Remove penetrant residue by spraying or by soaking in solvent.
 ú  (c) Make sure that all internal passages and recesses are
 ú  completely cleaned and dry.
 ú  1) Blow out passages and recesses with dry air.
 ú  E.  Quality Assurance
 ú
 ú  S 232-036-C00
 ú  (1) Examine the part under ultraviolet light to make sure all penetrants
 ú  and developer materials are removed.
 ú
 ú  S 232-037-C00
 ú  (2) Make sure that the residues of processing compounds are completely
 ú  removed from titanium and titanium alloy parts.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 70-40-01
 ALL  ú ú C02.1 Page 206 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
ú ú TASK 70-40-01-232-001-C00 ú3. Fluorescent Penetrant Inspection (Water Washable)
_________________________________________________
 A. General
 (1)  
This procedure is for a water-washable, fluorescent-penetrant inspection procedure at the remote locations.

 (a)  
A portable, fluorescent-penetrant inspection is a localized procedure, that is kept to small areas or a spot inspection of specified areas of parts.

 (b)  
Use this procedure for the inspection of welded or other confined repair areas.

 (c)  
Apply the penetrant only to a local area that needs to be inspected.

 

 (2)  
If you use a nonfluorescent, color-dyed penetrant on parts that you will inspect with fluorescent penetrants, the contamination by the dye can prevent the correct fluorescent-penetrant inspection.

 (a)  All color-dye indications shown by a white light visual inspection are correct indications, even if not found by ultraviolet light.

 (3)  
Titanium alloy parts can get stress corrosion cracks from residues (that contain halogen compounds) that stay on a part and are exposed to increased temperature from welding, heat treating or engine operation.

 (a)  You must clean the parts fully with nonhalogen compounds if they touch a compound that contains halogen.
 NOTE: This will prevent cracks and possible failure of parts.
____
 (b)  You must use deionized water to process the parts made of titanium or titanium alloy.
 (4)  
You must clean the parts before the inspection procedure.

 (5)  
Put a plug or cap on all the tubes or holes in the parts in the area you examine.

 NOTE: This will keep the penetrant or other material out of the
____
 tubes and holes.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 70-40-01
 ALL  ú ú C01.1 Page 207 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(6)  Use the fluorescent-penetrants and developers from the same manufacturer.
 NOTE: They should be products of one manufacturer, except when you
____ use solvent (nonaqueous) wet developer.
 (a)  It is permitted to use the approved solvent-wet developer, Tracer-Tech D499C, with all product systems.
　
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