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A
747-400 MAINTENANCE MANUAL
D. Examine the Firewall and Fireseal
S 216-005
(1) Examine the firewall structure for cracks, nicks, dents, deformations or loose components or components that are not there.
(a) If you find these conditions, repair the firewall (SRM 54-00-00).
S 216-006
(2) Make sure the top surface of the firewall is clean and drains correctly.
(a) If the fireseal collects fluids, do the procedure to seal the fireseal (AMM 51-31-01/201).
E. Restore the Airplane to Normal
S 166-007
CAUTION: TOOLS OR UNWANTED MATERIALS IN THE STRUT COMPARTMENTS CAN STOP
_______ THE REMOVAL OF THE FLUIDS THROUGH THE STRUT DRAINS. IF YOU DO NOT REMOVE THE UNWANTED MATERIALS, YOU CAN CAUSE DAMAGE TO THE STRUT.
(1)
Remove all tools and unwanted materials from the strut cavities before you install the access doors.
(2)
Install the access doors on the strut (AMM 54-62-00/201).
(3)
Install the engine (AMM 71-00-02/401).
S 416-008
S 416-009
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747-400 MAINTENANCE MANUAL
STRUT INSULATION BLANKET - REMOVAL/INSTALLATION
_______________________________________________
1. General
_______
A. This procedure contains two tasks, the removal and the installation of the Strut Insulation Blanket.
B. Blanket installations may vary from the illustration (Fig. 401) which is typical (with SB 54-2178 incorporated). Insulation blankets should be handled with care, avoiding activities which may encourage cracking or tearing of the material. For repair procedures, see AMM 54-52-01/801.
TASK 54-52-01-004-001
2. Strut Insulation Blanket Removal
________________________________
A. 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
B. 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
C. Remove the strut insulation blanket
S 014-002
(1)
Remove the applicable engine (AMM 71-00-02/401).
S 024-010
(2)
Remove the insulation blanket.
NOTE:____Handle the blanket with care. Do not allow the blanket to fold at a sharp angle. Support the blanket when removing or installing it.
S 024-012
(3)
Remove the blanket cover plate, if installed.
S 024-013
(4)
If the instalation uses capstans, remove the lockwire from the capstans.
(5)
Support the blanket to avoid bending and remove from place.
S 024-014
TASK 54-52-01-404-005
3. Strut Insulation Blanket Installation
_____________________________________
A. Consumable Materials
(1) Lockwire
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