DO NOT LET FUEL TOUCH THE SEALANT YOU APPLIED UNTIL IT IS TACK-FREE FOR 2 HOURS MINIMUM.
WHEN YOU USE PROSEAL 860, NO PRECOAT IS NECESSARY. PROSEAL 860 IS RECOMMENDED FOR SMALL
REPAIRS ONLY, DUE TO ITS SHORT APPLICATION TIME.

MIX BMS 5-26, TYPE II, CLASS B-2 SEALANT WITH A 20:100 ACCELERATOR/BASE RATIO BY WEIGHT
TO GET THIS SEALANT, OR GET THIS SEALANT PREMIXED.
USED FOR FAYING SURFACE SEALS ONLY.
USED TO REPAIR FILLET SEALS OF BMS 5-26 WHICH ARE IN A TACK-FREE CONDITION. AVAILABLE IN

6 OUNCE SEMKITS ONLY FROM PRODUCTS RESEARCH AND CHEMICAL CORPORATION, GLENDALE, CA. USE WITH ADHESION PROMOTER.
Sealant Usable Time
Figure 611

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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E07215
A

757
MAINTENANCE MANUAL

 S 166-024
 (3)  
Make sure there is no blockage in the fuel and water drain holes and paths.

 S 216-025

 (4)  
Do a final inspection of the fuel tank to make sure you removed all unwanted materials and equipment.

 NOTE: Make sure the necessary approved persons do an inspection
____
 of the tank before you close it.

 S 416-026
 (5)  
Install all of the fuel tank access doors that you removed (AMM 28-11-01/401, AMM 28-11-02/401).

 J.
Put the Airplane Back to Its Usual Condition

 S 656-027
 (1)  
Refuel the fuel tanks (AMM 12-11-01/301).

 S 216-083

 (2)  
Examine the external leak area regularly for 1 hour.

 NOTE: You can monitor the leak area for a longer time to make sure
____
 the leak repair is OK.

 S 796-068
 (3)  
If you repaired a fastener, you can use the vacuum cup, ST8744, to make sure it does not have a leak.

 (a)  
Attach a vacuum source (10 psi) to the vacuum cup.

 (b)  
Put the vacuum cup on the fastener that you repaired.

 (c)  
Apply the vacuum pressure (10 psi).

 (d)  
If no bubbles or other leak indications occur, you repaired the fastener correctly.

 S 216-084
 (4)  Make sure there are no fuel leaks.
 NOTE: Make sure the leakage area is maintained, at a minimum, to
____ ú the leakage limits shown in Figure 602 after the 1 hour inspection.
 S 396-031
 (5)  If you removed aerodynamic smoother to find the external leak, repair the hole (AMM 51-31-01/201).
　
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