(c) If required, remove plunger type drain valve from outside the fuse-lage, clean out obstructions and reinstall valve until flange con-tacts skin. Tighten to 15 lb-in. maximum.

(3)Wheel Well and Keel Beam:

(a)
Treatment of wheel well at the same time as the main gear is recom-mended.

(b)
Remove runway debris and generally clean the entire wheel well area.

(c)
Remove keel beam side panels to gain access to cavity area between
stations 900 and 1040 and clean the cavity area.

NOTE: It is not necessary to remove every side panel. Remove only enough

panels for easy access to the keel beam cavity and inner structure

of the sidewalls.

(d)
Applywater displacing corrosion inhibiting compound to the inner
surface of the keel beam side panels and entire structure on the
inside of the keel beam for the entire length.

(e)
Apply water displacing corrosion inhibiting compound to the inside
surface at the panels removed for access.

(f)
Apply water displacing corrosion inhibiting compound to all exposed
wheel well structure, including the exposed surfaces of the keel
beam center web, and the wheel well pressure deck web. Special
effort should be made to apply the corrosion inhibitor along doubter
edges, faying surfaces and on fastener heads. The use of spray
equipment with nozzle directed into faying surface is recommended.

(g)
Applywater displacing corrosion inhibiting compound to landing gear
attachment fittings. Ensure that all lugs and lug faces are treated.

(h)
Apply water displacing corrosion inhibiting compound to the keel beam
chords, main landing gear trunnion back-up fittings and skin.

(i)
If toilet effluent leakage is observed in the keel beam area, remove
keel beam side panels, wash and reapply corrosion inhibiting com-pound in all areas contaminated.

(j)
In cases where the wheel well is cleaned with steam or high pressure
water and detergent, reapplication of corrosion inhibiting compound
is recommended.

(4)Emergency Exit Door Opening:

(a) Treatment of the door at the same time as the door opening is recom-mended.

Volume 2-757

53-40-01

Page 3
OCT 01/00

CORROSION PREVENTIONMANUAL
FUSELAGE -SECTION 44

(b)
Remove debris and generally clean the entire door opening area.
Remove reveal scuff plate where applicable.

(c)
Special effort should be made to apply the corrosion inhibitor along
the doubter edges, along faying surfaces and on fastener heads.
Spray all doors and fuselage fittings at the faying surface. The use
　
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