1) Discard the contaminated clean-up materials into a plastic container.
(e)
Flush the area with large quantities of clean water.
NOTE: A pressure application of water to the solution can be
____ necessary to flush the faying surface joints and some access areas fully.
1) Rub the surface with a soft brush.
(f)
Do a test of the cleaned area with litmus paper.
(g)
Make the area dry with clean cloths.
(h)
Repair the area if it is necessary after it is fully dry.
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A
737-300/400/500MAINTENANCE MANUAL
HYDRAULIC FLUID REACTION WITH TITANIUM -
________________________________________ MAINTENANCE PRACTICES (CONDITIONAL INSPECTION)
______________________________________________
1. General_______
A. This section gives procedures to examine bare, painted, or gold coated titanium parts. The examination is necessary when the titanium touches fire resistant hydraulic fluid that has temperatures above 270° F (132° C). At these temperatures, titanium becomes brittle. .
TASK 05-51-17-212-001
2. Conditional Inspection of Titanium Parts in Fire-Resistant Hydraulic Fluid__________________________________________________________________________ Contamination Areas___________________
A. Examine the Titanium Parts
NOTE: Titanium parts found in hydraulic fluid areas have a flat, black
____ inorganic finish, or a gold coat for protection. Make sure that the black finish is not hydraulic fluid.
S 212-002
(1) Examine all of the titanium parts in the hydraulic fluid areas. Look for contamination, and metal or paint deterioration.
NOTE: Titanium parts include ducts in the wheel well areas, engine
____ fan case, and firewalls. Also included are the ducts in the aft fuselage between the pressure bulkhead and the APU firewall. Other titanium parts are some strut attach fittings and spar webs, landing gear beam, APU support structure, and stabilizer links.
(a) Signs of hydraulic fluid contamination are a light glossy brown film, or a dull black carbonaceous residue. Also look for a bare surface on painted titanium ducts.
S 112-002
(2)
Remove the hydraulic fluid residue. Use acetone and wooden or plastic scrapers.
S 962-003
(3)
Replace all parts that show paint deterioration and/or metal that is etched.
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A
737-300/400/500MAINTENANCE MANUAL
EXTREME DUST CONDITION - MAINTENANCE PRACTICES (CONDITIONAL INSPECTION)
_______________________________________________________________________
1. General_______
A. This section gives procedures to examine the dust sensitive areas on the airplane when there are extreme dust conditions.
TASK 05-51-21-212-001
2. Extreme Dust Conditional Inspection___________________________________
A. Procedure
S 212-002
(1) Make sure the areas that follow are clean:
(a)
Stabilizer trim and flap screw mechanisms.
(b)
Static ports and pitot tubes.
(c)
Landing gear shock strut inner cylinders and all gear actuator pushrods. This includes the main gear uplock actuator pushrods.
(d)
Engine inlet and indicator probes.
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