TM 10-4930-236-13&PWARNINGWhen using compressed air, wear safety goggles or glasses andensure air blast is not directed at anotherperson. Do not direct compressed air against the skin.(4) When testing tank, completely dry and clean the interior and exterior of the tank of all foreign matter. When thetank is completely dry and clean, close all openings such as valves and fill cap, plug and fill cap vent, and subject thetank to a constant internal air pressure of 3 to 5 pounds per square inch gage (PSIG).Apply liquid detergent conformingto P-D-223 over the entire exterior surface of the tank at a pressure of not less than 70 PSIG (hand sprayer). Applyingthe liquid detergent by brush or other means is not acceptable. Observe the exterior of the tank. Leaks as evidenced byfizzing or bubbling of the liquid detergent, surface rupture, deformation, or broken hardware shall constitute failure.f.Repair of the Tank Assembly.WARNINGApplying heat or flame to a fuel tank containing residue mayresult in a violent explosion, causing injury or death topersonnel. lf conditions require fuel tank repairs by welding orother methods involving heat or flame, take care to assure thatall fumes are purged from the tank or fill tank with water beforecommencing the repair. If possible, tank should be filled withwater prior to welding after being thoroughly purged of fumes.(1) Repair all dents, cracks, breaks,and holes in the tank. Weld ruptured weld seamsand other damage. Replace badly damaged parts.Refer to TM 9-237.(2) if welding repairs are required nearthe bottom loading valve, refer to Paragraph5-8 toremove the bottom loading valve.(3) Treat and paint the exterior of thetank in accordance with TM 43-0139.5-18
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