51-31-00
 ALL  ú ú B02 Page 202 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 102-009-B00
 (8)  Do these steps to clean the damaged area immediately before you apply the sealant:
 (a)  
Make sure you clean an area that is wider than necessary to apply the sealant.

 (b)  
Make sure you remove the grease, oil, dirt, and loose particles.

 (c)  
Make sure you use a clean cheesecloth that is moist with solvent.

 (d)  
Continue to clean the area with the clean cheesecloth until there is no sign of grease, oil, dirt, or loose particles on the cheesecloth.

 (e)  
Make sure the solvent is removed from the area with a dry, clean cheesecloth before the solvent dries.

 (f)  
Use compressed air to remove the remaining solvent from the area.

 (g)  
If a large quantity of primer was removed from the area, then you must apply more primer to the area after you apply the sealant.

 TASK 51-31-00-392-010-B00
 3.  Non-Removable Faying (Mated) Surface Seal Application_____________________________________________________
 A. General
 (1)  
You must clean all the equipment before and after you apply the sealing compound.

 (2)  
When the sealing compounds are used with an activator, you must clean the equipment before the compounds become hard.

 (3)  
Do not mix the tools that you use for silicone with the tools that you use for the non-silicone materials.

 (4)  
Do not apply the smoothing, fairing, and sealing materials on the zinc chromate primer until the primer is hard and strong.

 B. Equipment
 (1)  
Spatula made of wood or plastic

 (2)  
Sealing gun and nozzles

 C. Procedure
 S 302-011-B00
 (1)  Do the Prepare for Sealing task.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 51-31-00
 ALL  ú ú B02 Page 203 ú Jul 12/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 392-087-B00
 CAUTION: DO NOT CAUSE A BLOCKAGE WHEN YOU APPLY SEALANT NEAR OR AROUND
_______ THE FUSELAGE DRAIN HOLES, TUBES, OR PATHS. THE FUNCTION OF THE DRAIN HOLES IS TO DRAIN CONDENSATION AND FLUIDS OVERBOARD. IF YOU CAUSE A BLOCKAGE, FLUIDS WILL COLLECT IN THE AIRPLANE. THE FLUIDS CAN CAUSE CORROSION TO THE STRUCTURE, OR A FIRE IF THE FLUIDS ARE FLAMMABLE.
 (2)  Apply the sealing compound to one surface with a flow gun or spatula. Make sure you apply the sealing compound on the full area of the faying mated surface (Fig. 201).
 NOTE: The thickness of the sealing compound must be 1/32 inch.
____
 S 432-013-B00
 (3)  
Put the component parts together. Install the necessary fasteners.

 S 212-014-B00

 (4)  
If you will seal the fasteners, make sure you install them during the pot life of the sealing compound.

 S 492-015-B00

 (5)  
If you cannot install the permanent fasteners before the pot life of the sealing compound ends, use temporary fasteners to hold the parts together until the sealing compound dries.

 S 392-016-B00

 (6)  
Install the permanent fasteners with the new sealant. Apply the sealant on the fastener or in the hole.

 S 212-017-B00

 (7)  
Remove the unwanted sealant.

 (a)  Make sure the faying mated surface is smooth and the squeeze out is approximately 0.06 inch along the joint.
 TASK 51-31-00-392-079-B00
 4.  Removable Faying (Mated) Surface Seal Application_________________________________________________
 A. General
 (1)  
You must clean all the equipment before and after you apply the sealing compound.

 (2)  
When the sealing compounds are used with an activator, you must clean the equipment before the compounds become hard.

 (3)  
Do not mix the tools that you use for silicone with the tools that you use for the non-silicone materials.

 (4)  
Do not apply the smoothing, fairing, and sealing materials on the zinc chromate primer until the primer is hard and strong.
　
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