737 AMM 飞机维护手册 结构 STRUCTURES(25)

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D.  Use leveling compound or sealant to make dams in floor tracks at end of cleaned areas and approximately 6 inches apart at galley tie-down wel1 locations.
E.  Cut non-metallic filler to length to fit between dams in floor track except at galley tie-down well locations.
NOTE:  Filler may be made from BAC1522-148 extrusion, or square section of plastic, rubber or wood.
F.  Melt grease to liquid state and partially fill track between dams.
NOTE:  Grease may be melted in container of water heated above 150°F.
G.  Insert filler to bring grease to top of track. Wipe off excess.
NOTE:  Cold application of grease will leave unprotected voids in track and is not recommended.
H.  Apply 1.5 inch wide strip of fiberglass over track to provide protective cover in walkway areas only. Bond strip to floor track with sealant.
I.  Fill floor track with grease in galley tie-down well locations.
J.  Apply plastic water barrier of permacel tape or mylar sheet over entire exposed area (Ref 53-21-11).
501 
Oct 20/83  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  51-21-92 Page 201 

F85322
Floor-Track Corrosion Prevention  501 
51-21-92Page 202   Figure 201 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Nov 15/77 

 

VELVET COATING FOR NONGLARE AREAS
1.  Equipment and Materials

WARNING:  THESE FINISHES AND SOLVENTS CONTAIN TOXIC AND FLAMMABLE COMPONENTS. AVOID BREATHING VAPORS AND MIST. USE WITH ADEQUATE VENTILATION PROVIDE APPROVED RESPIRATORY PROTECTION AS REQUIRED. DO NOT GET IN EYES. AVOID CONTACT WITH SKIN AND CLOTHING. USE PROTECTIVE EQUIPMENT AS REQUIRED. KEEP FLAMMABLE MATERIALS AWAY FROM SOURCES OF IGNITION.
A.  Non-Reflecting Coating - BAC 5710 Type 35 (Ref 20-30-41)
B.  Masking Tape - 3M #214
C.  Solvent

(1) 
 Naphtha

(2)  
Xylene TT-X-916 (Ref 20-30-31)

2.  Surface Preparation for Velvet Coating
A.  Refer to 51-21-21, Prepaint Cleaning and Pretreatment.
3.  Velvet Coating Application

A.  Mix the coating thoroughly prior to use.
B.  Thin the coating if necessary to proper spray viscosity of 21-26 seconds (No. 2 Zahn).
C.  Spray apply one coat, 2.0 to 2.5 mil thickness by overlapping passes while previous spray pass is still wet. Do not apply more than one coat.
D.  Coating may be taped and masked after approximately 12 hours. Determine tape time by spraying test panels at the same time the airplane is painted, and taping on panel using 3M #214 tape.
500 
Sep 20/82  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  51-21-101 Page 701 

 

ABRASION RESISTANT MOLYBDENUM DISULFIDE FINISH
1.  General

A.  This section describes the preparation and application of a brushable or sprayable and hydraulic fluid resistant finish to chafing surfaces.
WARNING:  FINISHES, CLEANERS, THINNERS, AND SOLVENTS USED IN THIS SUBJECT CONTAIN TOXIC AND FLAMMABLE COMPONENTS. AVOID BREATHING VAPORS AND MIST. USE WITH ADEQUATE VENTILATION. PROVIDE APPROVED RESPIRATORY PROTECTION AS REQUIRED. DO NOT GET IN EYES. AVOID CONTACT WITH SKIN AND CLOTHING. USE PROTECTIVE EQUIPMENT AS REQUIRED. KEEP FLAMMABLE MATERIALS AWAY FROM SOURCES OF IGNITION.
B.  The following requirements must be observed:
(1)  
Material shall be properly mixed.

(2)  
Material whose pot life has been exceeded shall be scrapped and not used.

(3)  
The BMS 10-11, Type 1, primers shall be properly cured before topcoating with Tereco

155.

(4)  
Clean and proper equipment shall be used.

(5)  
Use high quality bristle brushes with firmly attached bristles for brush application.

(6)  
The coating materials shall be uniform, free of skins, lumps, gelled or coarse particles.

2.  Equipment and Materials

A.  Tereco 155, consisting of base material (part A) and accelerator (part B), Technical Research Co., Seattle
B.  Solvents and Thinners

(1)  
Toluene - TT-T-548 of JAN-T-171, Grade A

(2)  
Xylene - TT-X-916, Grade A

(3)  
Methyl Isobutyl Ketone - TT-M-268

500 
Feb 15/73  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  51-21-121 Page 701 

 

C.  Cheesecloth, or equivalent
D.  Aluminum oxide abrasive paper, 320 grit or finer, and 280 grit or finer
3.  Surface Preparation
A.  Aluminum Surfaces
　
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