(b)
Check that drain valve is free to open and close.
CAUTION: OBSERVE DRAIN VALVE TORQUE LIMITS. EXCESSIVE TIGHTENING OF
PLUNGER TYPE DRAIN VALVE WILL CAUSE VALVE FLANGE TO CRACK OR
BREAK.
(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.
Volume 2-757
53-30-01
Page 2
OCT 01/00
CORROSION PREVENTIONMANUAL
FUSELAGE -SECTION 43
(3)No. 1 Cargo Compartment
(a)
Remove sidewall lining and insulation blankets in the cargo compart-
ment and beneath the main deck entry and cargo doors to expose frame,
stringer, doubters and skin.
(b)
Remove floor liners to gain access to bilge areas, if any.
(c)
Remove ceiling lining for access to main deck floor beams and inter-costals.
(d)
Replace broken or damaged finishes. Refer to Volume 1, 20-60-00 for
protective finish systems.
(e)
Replace or repair broken or damaged leveling compounds used for
drainage.
(f)
Apply water displacing corrosion inhibiting compound to all exposed
structure under the cargo floor and to the sidewalls beneath the
upper lobe entry and cargo doors. The use of spray equipment with
nozzle directed into faying surfaces is recommended. Do not apply
excessively.
(g)
Allow solvent to evaporate before reinstalling insulation blankets.
(h)
Install blankets so they are taut.
(i)
Install liners and floor panels. Install the floor panel fasteners
with BMS 3-24 grease.
(4)No. 1 Cargo Door Opening
(a)
Treatment of the door at the same time as the door opening is recom-mended.
(b)
Remove traffic debris and generally clean the entire door opening
area. Remove reveal and scuff plate where applicable.
(c)
Replace damaged or broken finishes if at all possible. Refer to Vol-ume 1, 20-60-00 for protective finish systems.
(d)
Relubricate all tube points per standard servicing procedures.
(e)
Where accessible, apply corrosion inhibitor to the internal lower
sill area.
(f)
Special effort should be made to apply the corrosion inhibitor along
doubter edges, along faying surfaces and on fastener heads. Spray
all doors and fuselage fittings at the faying surfaces. The use of
spray equipment with nozzle directed into faying surface is recom-mended.
(5)Electrical/Electronics Access Door Opening (Ref 53-30-04, Fig. 1)
(a)
Treatment of the door at the same time as the door opening is recom-mended.
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