(b)
You can use a plastic tool to scrape away the remaining sealant.
(c)
Make sure you remove all of the loose sealant.
(d)
Cut into the good sealant on each side of the leak with a margin of an inch or more.
(e)
Cut the sealant at an angle to make sure the new sealant has an overlap with the remaining sealant (Fig. 606).
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A
737-300/400/500MAINTENANCE MANUAL
S 116-046
WARNING:_______ DO NOT GET SOLVENTS IN YOUR MOUTH, OR YOUR EYES, OR ON YOUR
SKIN. DO NOT BREATHE THE FUMES FROM SOLVENTS. SOLVENTS ARE
HAZARDOUS MATERIALS. SOLVENTS MAY BE FLAMMABLE OR HARMFUL TO
THE ENVIRONMENT. REFER TO PRODUCT MATERIAL SAFETY DATA SHEETS
(MSDS) AND LOCAL REQUIREMENTS FOR PROPER HANDLING PROCEDURES.
(2) Clean the surface with solvent, Series 93 (AMM 20-30-93/201)
NOTE: Clean an area approximately twice as large as the area
____ where you will apply the sealant.
(a)
Clean the surface with a gauze pad wet with the solvent and dry the surface immediately with a dry gauze pad.
(b)
Examine the gauze pad to see if it is dirty.
(c)
Continue to clean the surface and dry it until the dry gauze pad is clean when you examine it.
S 166-064
CAUTION: MAKE SURE THE PRIMER IS REMOVED IF IT IS NOT HEAT CURED (BAKED
_______ ON) BMS 10-20. THE SEALANT WILL NOT STAY IN PLACE IF THE PRIMER IS NOT HEAT CURED. THIS CAN CAUSE FUEL LEAKAGE.
(3) If the surface has a finish layer (topcoat) on the top of the sealant, remove all of the finish from the sealant repair area.
NOTE: Usually it is not necessary to remove the finish from
____ metal adjacent to the repair area. Finish (topcoat) applied to the top of the sealant can be removed when you remove the sealant.
S 366-065
CAUTION: DO NOT APPLY SEALANT TO SURFACES THAT HAVE A TEMPERATURE LESS
_______ THAN 50 DEGREES FAHRENHEIT OR MORE THAN 120 DEGREES FAHRENHEIT. THE SEALANT WILL NOT BOND CORRECTLY TO THE STRUCTURE.
(4) Apply a thin layer (precoat) of BMS 5-26 Type II, Class A sealant with a stiff bristled brush to the area that you prepared (Fig. 607).
NOTE: Refer to AMM 28-11-00/801 for more data about sealant
____ preparation.
(a) Use a circular motion to apply the precoat to the full repair area.
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