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MAINTENANCE MANUAL
FWD INBD
INSULATION
BLANKET ASSEMBLY
SEE A
STRUT
(CF6-80C2 ENGINES IS SHOWN,
PW4000 ENGINES IS EQUIVALENT)
Strut Inslation Blanket
Figure 401 (Sheet 1)
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L02568
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MAINTENANCE MANUAL
RIVET (QTY 2) NUTPLATE (38 LOCATIONS)
WASHER (38 LOCATIONS)
(19 LOCATIONS) WASHER
(19 LOCATIONS) BOLT PLATE COVER (4 LOCATIONS) RIVET
FWD (2 LOCATIONS) ASSEMBLY BLANKET
INBD
1 COVER PLATE
(LEFT SIDE IS SHOWN, RIGHT SIDE OPPOSITE) (PW4000 ENGINES) STRUT INSULATION BLANKET
1 NOT INSTALLED ON ALL AIRPLANES A
Figure 401 (Sheet 2) Strut Inslation Blanket
L02992
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MAINTENANCE MANUAL
B. References
(1)
AMM 71-00-02/401, Power Plant
(2)
AMM 71-11-04/201, Fan Cowl Panels
(3)
AMM 78-31-00/201, Thrust Reverser System
C. Access
(1) Location Zones
452 Nacelle Strut 1 - Torque Box
462 Nacelle Strut 2 - Torque Box
472 Nacelle Strut 3 - Torque Box
482 Nacelle Strut 4 - Torque Box
D. Procedure
S 424-006
(1)
Install the strut insulation blanket:
(a)
Put the insulation blanket in its correct postion on the strut.
(b)
If the installation has capstans installed, make sure that the capstans go through the grommets in the the insulation blanket
(c)
Use the double twist method to install the lockwire that holds the insulation blanket in place. 1) Make sure that the lockwire makes a minimum of one complete
turn around each of the capstans.
(d)
Install the bolts and washers in the remaining attach locations.
(e)
Install the cover plate.
(2)
Install the engine (AMM 71-00-02/401).
S 414-008
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747-400 MAINTENANCE MANUAL
STRUT INSULATION BLANKETS - REPAIRS
___________________________________
1. General_______
A. This procedure has a task to repair the strut aluminized insulation blankets.
TASK 54-52-01-308-023
2. Insulation Blanket Repairs__________________________
A. Equipment and Materials
(1)
A00482 Sealant - RTV106
(2)
AMA 138 Precured Aluminized fiberglass cloth (Style 112) Hi Temp Insulation Inc, Camarillo, CA 93010 TIG Hitco, Atlanta, GA 30318
(3)
Abrasive paper or cloth (280 grit)
(4)
Nextel 312 flameproof ceramic fabric (or equivalent) Hexel Corp., 1913 N. King, Sequin, TX 78155
(5)
Sealant - RTV 60 (RTV 106 alternative)
(6)
Stitching - 0.0018 Diameter, Class C
(7)
Solvent - MPK, acetone or equivalent
(8)
Wipers - cheesecloth, gauze or lint free equivalent
B. References
(1) AMM 71-00-02/401, Power Plant
C. Access
(1) Location Zones
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