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A
737-300/400/500MAINTENANCE MANUAL
S 392-040-B00
(3)
Apply Dow Corning 93-006-6 to the flange on the interior of the firewall.
S 212-041-B00
(4)
Make sure the heat shield blankets are properly installed.
F. Put the Airplane Back to Its Usual Condition
S 412-043-B00
(1) Install the forward fairing (AMM 54-32-02/401).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
STRUT INSULATION BLANKETS - REPAIR PROCEDURE
____________________________________________
1. General_______
A. This procedure has one task:
(1) Repair of minor damage to strut insulation blanket
TASK 54-52-00-358-036-B00
2. Strut Insulation Blanket Repair_______________________________
A. Equipment and Materials
(1)
AMA 138 Precured Aluminized fiberglass cloth (Style 112) Hi Temp Insulation, Inc., Camarillo, CA 93010 (805) 484-2774
(2)
Abrasive paper or cloth (280 grit)
(3)
C00334 Nextel 312 flameproof ceramic fabric (or equivalent) Hexel Corp., 1913 N. King, Sequin, TX 78155
(4)
A00433 Sealant - RTV 60 (RTV 106 Alternative)
(5)
B00178 Solvent - MPK, acetone or equivqlent
(6)
Stitching - 0.0018 Diameter, Class C
(7)
G00034 Wipers - cheesecloth, gauze or lint free equivalent
B. References
(1)
AMM 71-00-02/401, Power Plant
(2)
SRM 51-70-15
(3)
SRM 54-50-02
C. Access
(1) Location Zone
500 Left Nacelle
600 Right Nacelle
D. Insulation Blanket Limitations
S 968-033-B00
(1)
Signs of moisture or fluid contamination inside the insulation layer requires replacement of the blanket.
S 358-034-B00
(2)
Total repairs of torn or damaged fabric (not including delaminated or torn aluminum foil) shall not exceed 10 percent of the blanket surface.
S 358-035-B00
(3)
Repairs involving repair of the delaminated or torn aluminum foil covering (not including the fiberglass under layer) does not have a repair limit.
E. Repair of delaminated and/or torn aluminum foil:
S 218-004-B00
(1) Remove areas of damaged or delaminated aluminum foil.
(a)
If the foil is firmly bonded in the repair area, carefully scrape it off the underlying fabric layer.
(b)
Lightly sand the foil to remove the gloss surrounding the area of repair to provide one inch of overlap.
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737-300/400/500MAINTENANCE MANUAL
(c)
Solvent clean the repair area with MPK or acetone.
(d)
Prime the repair area with DC1200.
(e)
Allow a minimum of 30 minutes and maximum of 2 hours curing time before applying RTV sealant.
(f)
Apply a 0.005 to 0.010 inch coat of RTV 60 sealant to the repair surface.
(g)
Apply a repair patch of AMA 138 precured aluminized fiberglass cloth (style 112) to the repair area.
(h)
Cover the repair area with release film and apply weight (sand bags) to ensure that the edges of the repair patch are firmly bonded.
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