72-33-02
 THE EXTENSION RING  ú ú C02 Page 417 ú Nov 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
EXTENSION RING
SEE B
B
B
 FWD
B
COLLAR
(12 LOCATIONS)
EXTENSIONRING
1
FWD
SHORT BOLT
LONG BOLT
(6 LOCATIONS)  ACOUSTICAL
(6 LOCATIONS) B-B
PANEL
1 MA-25S INSULATION ONLY ON ACOUSTICAL PANELS INSTALLED ON UPPER 180` SEGMENT OF EXTENSION RING. ACOUSTICAL PANELS INSTALLED ON LOWER 180` SEGMENT OF EXTENSION RING MUST HAVE COLLARS FILLET SEALED WITH BMS5-63 SEALANT Extension Ring Acoustical Panel Installation Figure 404 (Sheet 2)
E34574
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ENGINES WITH COMPRESSION MOLDED ú

 72-33-02
 ACOUSTICAL PANELS ON THE EXTENSION RING  ú ú C02 Page 418 ú Nov 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(b)  
ENGINES WITH THE COMPRESSION MOLDED ACOUSTICAL PANELS; Remove the 12 collars and bolts from the acoustical panel.

 (c)  
Discard the collars and all damaged bolts.

 NOTE: You can use the bolts again if they were not damaged
____ during the removal.
 (d)  Remove the acoustical panel from the aft extension ring.
 TASK 72-33-02-404-024-C00
 9. Extension Ring Acoustical Panel Installation
____________________________________________
 A. Equipment
 (1)  
Brush, Soft Bristle

 (2)  
Heat Blanket, Commercially available

 (3)  
Heat source, Explosion-proof,
 Commercially available

 B. Consumable Materials
 (1)  
Insulation - MA-25S,
 Martin Marietta Aerospace Co., Denver Div.,

 P.O. Box 179, Denver, Colorado 80201

 (2)  
Insulation - Crown Metro 64-C1-2 (Type I)/68-C3-1 (Type II) (Optional to MA-25S) Textron Inc. Bostitch Div. South County Trail, E. Greenwich, RI 02818

 (3)  
Mat - Kevlar 49,
 International Paper Co.,
 Corporate Research Center,
 Tuxedo Park, N.Y.

 (4)  
Sealant and primer compound - BMS 5-63,
 D Aircraft Products Co., 1191 Hawk Cir.,
 Anaheim, CA 92708.

 (5)  
Silica Fibers - F100-A25,
 Hitco Division of Armco Steel, Gardena, CA.

 (6)  
Sealant, RTV 560, Topcoat
 (AMM 20-30-11/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 72-33-02
 ALL  ú ú C02 Page 419 ú Nov 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(7)  
Sealant, RTV 106 (AMM 20-30-11/201)

 (8)  
Solvent, Methyl Ethyl Ketone (MEK)
 (AMM 20-30-31/201).

 (9)  
Abrasive Paper, Aluminum Paper,
 180 grit or finer
 (AMM 20-30-51/201).

 (10)
 Dibutyl Tin Dilaurate (Thermolyte-12)
 (AMM 20-30-41/201).

 (11)
 Primer, Silicone, DC-1200, Red Tinted
 (AMM 20-30-41/201).

 (12)
 Thinner, Naphtha, BMS 3-2 Type II
 (AMM 20-30-31/201).

 C. References
 (1)  
AMM 71-11-02/201, Fan Cowl Panels

 (2)  
AMM 78-31-00/201, Thrust Reverser System

 D. Access
 (1)  
Location Zones
　
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