TM 9-2320-209-34-2-3 FRAME 2 1. Take out safety relief valve (1). 2. Put in air pressure gauge (2). 3. Using clean, dry air, pressurize container (3) to 10 psi. 4. Apply soapy water to container (3). Air bubbles or a drop in air pressure is a sign of air leak. To repair, refer to para 21-31c. 5. Take out air pressure gauge (2). 6. Put in safety relief valve (1). END OF TASK 21-213/(21-214 blank)