25-50-09
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 S 168-126
 (4)  
Clean all of the surfaces using denatured alcohol to remove the loose particles.

 S 348-127

 (5)  
Apply adhesive to the back of the patches.

 S 348-128

 (6)  
Put the patches over the center of the damaged area on the front and the back of the liner.

 S 348-129

 (7)
Apply pressure to the patches to make sure there is a good bond.

 S 348-138

 (8)  
Do the steps that follow to permanently attach the patches:

 (a)  
Install bolts, NAS603-5P or equivalent, washers, AN960JD10L, and nuts, MS21042L3, at a maximum of 2 inches apart and 0.5 inch from the edges of the patches.

 (b)  
Make sure there is sufficient clearance between the bolts and the adjacent systems behind the panel.

 (c)  
If it is necessary, grind the ends of the bolts smooth with the nuts to get sufficient clearance.

 S 438-148
 (9)  
Install the liner (AMM 25-50-01/401, AMM 25-50-02/401, or
 AMM 25-50-03/401).

 S 968-149

 (10)
 If sufficient clearance is still not obtained, replace the damaged panel.

 F. Procedure - Repair the Neoprene-coated Fabric with Fiberglass Thread
 S 028-139
 (1)  Remove the fasteners that attach the liner to the structure.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 25-50-09
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A

757 MAINTENANCE MANUAL
 (2)  S 038-140Remove the liner (AMM 25-50-01/401, AMM 25-50-02/401, or AMM 25-50-03/401).
 (3)  S 348-141Make a fiberglass patch.
 NOTE:____ The patch should make a minimum of a 2-inch overlap on the area that is not damaged. For example, the patch dimension that is necessary for a 1.5-inch diameter hole would be a 5.5-inch diameter.
 (4)  S 168-142Clean all of the surfaces using denatured alcohol to remove the loose particles.
 (5)  S 348-143Apply adhesive to the back of the patch.
 (6)  S 348-144Put the patch over the center of the damaged area on the front of the liner.
 (7)  S 348-145Apply pressure to the patch to make sure there is a good bond.
 (8)  S 348-146Use fiberglass thread to stitch two lines around the edge of the patch.
 NOTE:____ There should be seven, plus or minus one, stitches for each inch.
 (9)  S 438-147Install the liner (AMM 25-50-01/401, AMM 25-50-02/401, or AMM 25-50-03/401).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 TASK 25-50-09-308-133
 6. Silicone Impregnated Liner Repairs
__________________________________
 A. General
 (1)  The task that follows is for the repair of silicone impregnated fabric which is used as the cargo door liners.
 B. Consumable Materials
 (1)  
G01498 Thread, Fiberglass - P/N GTH-18 or equivalent, Supplier: Lance Industries

 (2)  
G01499 Material, Biscote Patch - P/N HT101, Supplier: Bisco Products Inc.

 C. Access
 (1)  Location Zones
 121/122 Forward Cargo Compartment
 153/154 Aft Cargo Compartment

 D. Procedure - Repair the Silicone Impregnated Liner
 S 348-134
 (1)  Use fiberglass thread to stitch the tear together or stitch a patch of biscote material on the damage.
 NOTE: There should be seven, plus or minus one, stitches for each
　
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