Downloaded from https://www.everyspec.com FM 1-509 100-psi shop air source. A remote control air switch is provided to activate the air-to-hydraulic fluid valve. To prevent tool damage, keep the swaging pressure level from reaching more than 5,500 psi by using a pressure-relief valve. After swaging is finished, reduce the pressure to zero by turning the manual four-way selector valve to EXHAUST. To repair damaged tubing, use the following procedures: NOTE: Repair procedures are typical for all separable and permanent fittings. 1. Determine the type of repair to be performed by using the chart in Figure 2-1. 2-3