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STEP 13: DIMPLE FIRST HOLE STEP 15: DIMPLE REMAINING HOLES Remove tool. Remove any chips or burrs from the Remove any chips or burrs from the drilling drilling operation. Place the assembly on a solid operation. Dimple the next (2) holes as done in Step surface. Using the punch supplied with the 71 SO- 13. Make sure the assembly is on a solid surface TOOL and 71SO-TOOLC, align the tip of the punch when punching. After punching, remove any chips with the drilled hole and dimple the upper drop tube that may have fallen into the inlet tube screw hole. by striking the punch with a hammer until the drop tube is formed into countersunk hole in the inlet tube. After punching, remove any chips that may have fallen into the inlet tube screw hole. -- - Align punch with drilled hole 0 Figure 15 STEP 16: ASSEMBLE OTHER SCREWS Apply black moly grease to screws and tighten the other(2)screws into inlet tube with a screwdriver as done in Step 14. Use only the taptite screws that are supplied with the unit. Seating torque is 20 in- lbs min. to 35 in-lbs max. Do not over tighten. Figure 13 STEP 17: APPLY GREASE TO LOWER O-RING STEP 14: ASSEMBLE FIRST SCREW AND BODY THREADS Ensure that the drop tube was formed into the Apply black moly grease to the lower tube o-ring and countersunk screw hole as shown in Figure 14 if not body threads as shown. Make sure coverage is return to step 13. Apply black moly grease to screw completely around the o-ring. Install o-ring in groove and tighten first screw into inlet tube with a just above threads. screwdriver. Use only the taptite screws that are supplied with the unit. Seating torque is 20 in-lbs Apply grease min. to 35 in-lbs max. Screw head should be flush around o-ring with the drop tube. Do not over tighten. O-ring Ensure the drop tube is groove Body threads formed into countersunk hole Figure 17 Figure 14 OPW 71 SO Overfill Prevention Valve Page 10