FUEL SYSTEM 25 Assembly for Preswaged tubes 1. For preswaged pipes, during making the joints on vehicle, turn the coupling nut to its original position by hand. 2. An increase in resistance will encountered at the original position, then tighten slightly with wrench. 3. Coupling nut shall ride freely on respective connectors. 4. Ensure proper alignment. 5. End of full length and bent tubes to be sealed with plastic plugs. 6. Do not use Teflon tape/thread sealant on ferrule joints. 7. Use Teflon tape on taper thread joints. REASSEMBLY A. We can disassemble and reassemble swagelock tube fittings many times. B. Insert tubing with preswaged ferrules into the fitting body until the front ferrule seat C. Rotate the nut with a wrench to the previously pulled- up position; at this point, a significant increase in resistance will be encountered. D. Tighten slightly with wrench Gap Inspection Gauge On initial installation, the Swagelok gap inspection gauge assures the installer or inspector that a fitting has been sufficiently tightened. Application of Gap Inspection gauge (Part Number: 2873 5890 47 03) 1. Position the gap inspection gauge next to the gap between the nut and body. 2. If the gauge does not enter the gap, then the fitting is sufficiently tightened. 3. If the gauge enters the gap, then additional tightening is required. CAUTION: Always depressurize the system before adjusting the tightness of a tube fitting connection.
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