TM 5-5430-212-13&Pb.Rub on a small area of the tank. If a greasy film appears, skip to step 7. Otherwise go to step 6.6.Clean entire area of tank to be patched with Cleaner/Degreaser (Item 10, Table 3-3).7.Undercut fine edges of the hole with razor knife (Item 17, Table 3-3). Scuff the mating surfaces of both thetank and patch(es) with scruffing brush (Item 2, Table 3-3). Roughened area on tank should extendapproximately 1 inch (2.5 cm) on all sides beyond the surface where the patch(es) will be installed.8.Brush away loose contamination and degrease again if needed.NOTEOne can of Surface Conditioner should cover approximately 6.5 sq. ft. (0.63 sq.meters). All mixing and application tools should be cleaned immediately after usewith Cleaner/Degreaser9.Immediately brush a thin, even coat of Surface Conditioner (Item 3, Table 3-3) onto the area of tank to bepatched. Use the brush (Item 8, Table 3-3) as a stipple to ensure the thinnest possible film.NOTEThe touch dry time will be dependent on the ambient temperature and relativehumidity. The touch dry time at 68oF (20oC) and 50% relative humidity will be 20 to30 minutes. Overcoating of Surface Conditioner with Fluid Elastomer (adhesive)must take place within 4 hours.10.Let Surface Conditioner (Item 8, Table 3-3) set until touch dry before overcoating with mixed FluidElastometer (adhesive). Test by lightly touching one knuckle down into Surface Conditioner. Lift slowly. Ifno conditioner is left on knuckle, it is dry. If a second (outside) patch is to be applied, repeat steps 7 through10 for outside of tank before going onto step 11.NOTEBoth the Base and Solidifier components of the Fluid Elastomer must remainsealed until just before application. For best results do not apply the mixedadhesive under the following conditions:When the temperature is below 41°F(5oC)When the relative humidity is above 90%During rain, snow, fog, or mistWhen there is moisture on the tank surface or moisture is likely to condense on the tank before the adhesivecures.When the working environment is likely to be contaminated by oil or grease from adjacent equipment orsmoke from kerosene heaters or tobacco smoking.11.Empty entire contents of one can of the Fluid Elastomer Base (Item 4, Table 3-3) into the mixing bowl (Item18, Table 3-3).12.Shake one can of the Fluid Elastomer Solidifier (Item 5, Table 3-3). Pour the contents over the ElastomerBase (Item 4, Table 3-3) in the mixing bowl (Item 18, Table 3-3).13.Using the mixing stirrer (Item 6, Table 3-3), immediately stir together the Fluid Elastomer Base (Item 4,Table 3-3) and Solidifier (Item 5, Table 3-3). Stir for at least 2 minutes to form an adhesive.3-6.3/(3-6.4 blank)Change 4
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