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STEP 5: SAND THE UPPER DROP TUBE <br />Sand the inside of the drop tube with sandpaper <br />and/or steel wool to remove all burrs and sharp <br />edges. After sanding wipe down the inside of the <br />tube with a clean rag from the top to approximately 4 <br />inches down to remove any debris. <br />Caution: Failure to properly chamfer, sand, and <br />clean the drop tube may cut the seal and result <br />in a failure of a pressure decay leak test. <br />Fine grit sandpaper <br />Figure 5 <br />STEP 6: APPLY GREASE TO DROP TUBE <br />Apply black moly grease to the inside diameter of <br />the upper drop tube. Make sure coverage is <br />completely around the tube as shown in Figure 6. <br />Figure 6 <br />STEP 7: APPLY GREASE TO POLYPAK SEAL <br />Ensure that the polypak seal is installed on the inlet <br />tube with the lip up as shown in Figure 7. Apply <br />black moly grease to the polypak as shown. Make <br />sure coverage is completely around the polypak <br />seal. <br />Ensure polypak <br />lip is up <br />Inlet <br />Tube �� Polypak <br />Apply grease <br />around polypak <br />Figure 7 <br />STEP 8: INSTALL INLET TUBE <br />Insert the inlet tube into the upper tube until the <br />upper tube seats against the flange on the inlet tube. <br />Ensure polypak is inserted evenly and stays in inlet <br />U uivvvc. <br />V <br />Figure 8 <br />SEE PAGE 8 FOR INSTRUCTIONS USING THE <br />71 SO -TOOL. <br />SEE PAGE 9 FOR INSTRUCTIONS USING THE <br />71 SO-TOOLC. <br />67 <br />