S 167-001

 (7)  
Point the steam at an angle of approximately 45 degrees, 6 to 10 inches from the surface of the fuel tank.

 S 167-002

 (8)  
Move all unwanted materials to the inboard end of the fuel tank and remove.

 (9)  
Make sure the fuel tank is free of all loosened fungus.

 S 217-032

 (10)
 Make sure that all flow holes are clear of loosened fungus or other material which could block the drainage of water or fuel (Fig. 701).

 S 217-031
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A

757
MAINTENANCE MANUAL

 S 167-033
 (11)
 Remove all remaining unwanted material.

 S 867-034

 (12)
 Continue to have a steady flow of air through the fuel tank until the fuel tank is dry.

 S 147-035

 (13)
 Look for corrosion on all structural surfaces of the fuel tank.

 (a)  
If there is light surface corrosion, rub the surface with fine abrasive paper or cloth to remove the corrosion.

 CAUTION: REFER TO THE STRUCTURAL REPAIR MANUAL TO CALCULATE IF THE
_______ STRUCTURE IS WEAK. CORROSION CAN MAKE THE STRUCTURE WEAK.
 (b)  If you cannot fully remove the corrosion with the abrasive paper or cloth, use a mechanical removal method such as dry abrasive blasting with glass beads to remove below surface pits (Ref Structural Repair Manual).
 S 217-036
 (14)
 Do a check for damaged sealant in the fuel tank.  Repair if it is necessary (AMM 28-11-00/801).

 S 217-037

 (15)
 Do a check for damage to the corrosion resistant finish in the fuel tank, or for corrosion resistant finish that is not there. Repair if it is necessary.

 S 417-038

 (16)
 Install all substructure, support brackets, and fuel tank equipment which was removed.

 S 097-039

 (17)
 Remove all unwanted material, tools, solvent containers, rags and brushes remaining in the fuel tank.

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