25-21-05
ALL ú ú 01 Page 403 ú Dec 15/83
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 014-005
(4)
For the ceiling insulation, remove the lowered ceiling panels (AMM 25-22-02/401).
S 014-006
(5)
For the aft pressure bulkhead insulation, remove the aft galley G4B (AMM 25-31-04/401).
S 014-007
(6)
If you remove more than one blanket or capstrip, identify the blankets and capstrips with location tags for subsequent installation.
S 024-031
(7)
Remove the disk fasteners from the studs.
S 024-032
(8)
Pull the blanket away from the velcro tape at the edges (View A-A).
S 014-010
(9)
Remove the blanket and the capstrip.
TASK 25-21-05-404-011
3. Install the Insulation______________________
NOTE:____For the sidewall insulation, refer to Fig. 401. For the aft pressure bulkhead insulation, refer to Fig. 402.
A. Consumable Materials
(1) G00134 Tape - General 3M No. 474, 2-inches wide
B. References
(1)
AMM 25-21-02/401, Sidewall Panels
(2)
AMM 25-22-01/401, Sculptured Ceiling Panels
(3)
AMM 25-22-02/401, Lowered Ceiling Panels
(4)
AMM 25-28-02/401, Overhead Stowage Bin
(5)
AMM 25-31-04/401, Aft Galley
C. Access
(1) Location Zone
200 Upper Half of Fuselage
D. Procedure
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25-21-05
ALL ú ú 01 Page 404 ú Jan 20/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 414-028
CAUTION: DO NOT GET CORROSION-INHIBITING COMPOUNDS (CIC) ON THE
_______ INSULATION BLANKETS. APPLY CIC (BMS 3-23, BMS 3-26, BMS 3-29, OR EQUIVALENT) ONLY TO METALLIC AIRPLANE COMPONENTS. DO NOT ALLOW CIC TO CONTAMINATE NON-METALLIC MATERIALS. CIC WILL HAVE AN ADVERSE AFFECT ON THE FLAMMABILITY CHARACTERISTICS OF INSULATION BLANKETS.
(1) If Corrosion-inhibiting Compounds (CIC) contamination of insulation blankets occurs, adhere to the following steps:
(a)
Replace the insulation blanket if CIC contamination occurs along a seam.
(b)
For all areas except along seams, remove the CIC with Biogenic SE377C, Alphatic Naphtha, Citra-Safe, or equivalent.
NOTE: If the CIC can not be removed, replace the blanket.
____
S 414-029
(2) In order to prevent Corrosion-inhibiting compounds (CIC) contamination of insulaton blankets, obey the following steps prior to blanket installation:
NOTE: Adjust the following steps ventilation times upward to
____ achieve satisfactory drying depending on the temperature, humidity, and quantity of CIC.
(a)
Ventilate areas, after application of CIC such as BMS 3-23, for a minimum of one hour.
(b)
Ventilate areas treated with CIC such as BMS 3-26 or BMS 3-29 for a minimum of four hours.
S 414-017
(3)
Install the capstrip and the applicable blanket in the sidewall area.
(4)
Install the capstrip and the applicable blanket in the ceiling area.
S 414-019
(5)
Install the capstrip and the applicable blanket in the aft pressure bulkhead area.
(6)
Replace the studs if the studs are damaged or broken.
S 214-013
(7)
Make sure the blanket makes an overlap at the edges as shown in Fig. 401.
S 414-018
S 424-033
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
25-21-05
ALL ú ú 01 Page 405 ú Jan 20/99
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