(o) Install blankets so they are tight and so that the outboard surfaces of the upper blanket
overlap the lower blanket.
(p) Relubricate all lube points per standard servicing procedures.
(q) Install liners and floor panels. Install the floor panel fasteners with grease, D00633.
SUBTASK 53-11-37-610-045
(5) Frequency of Application
(a) Regular inspection is required in areas that can get corrosion and should agree with the
schedules in the Maintenance Planning Document. Operators must know of problems
and areas.
(b) Regular application of corrosion inhibiting compound, G00009 compound is necessary on
areas identified and should agree with the schedule in the Maintenance Planning
Document.
SUBTASK 53-11-37-610-046
(6) Improved Corrosion Protection
(a) On all entry and galley doorway scuff plate support structures, a production change
added sealant, A00247 fay surface seals between the scuff plate and support structure
and installed the screws through the scuff plate with sealant, A00247.
(b) A production change applied sealant, A00247, class F, chromate- loaded sealant to
inboard flanges of stringers and to the areas of the frames that touch the insulation
blankets.
(c) You can rework insulation blankets by removing the sewn cap strip from the lower edge
of the blanket and continuously penetrate the stitch sealing. The blankets to be reworked
must be made with water-repellent fillers. All 737 airplanes are known to be delivered with
blankets that use water-repellent fillers.
(d) A production change applied a new insulation blanket installation is used. The tightly
sealed covers are replaced with unsealed covers to permit water to enter the blanket and
drain equally easily. The blankets become drain paths into the lower lobe drain masts.
Water repellent blanket filler is also used.
(e) Drain holes with drain tubes were added at the forward entry doorway. but the drain tubes
can become clogged with dirt and carpet debris. To make it easier to clean the drain lines,
a production change added cutouts in the floor mat retainer plate.
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
53-11-37
Page 236
D633A101-ILF Oct 15/2014
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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