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71 SO -TOOLC PROCEDURE BELOW, STEP 11 Be PREPARE DRILL AND BIT <br /> FOR 71 SO-TOOL, SEE PAGE 8 Confirm that the stop on the 3 / 16 " drill bit supplied <br /> FOR 71 SO-TOOLCT, SEE PAGE 10 with the 71 SO -TOOLC is in the correct position before <br /> drilling . The stop is factory installed at a distance be- <br /> Note : 71 SO-TOOLC can only be used with testable tween 1 -3 / 16 " to 1 - 1 /4" from the tip with the 71 SO- <br /> overfill valves if modified as shown below. TOOLC . If the stop is not at the correct position it must <br /> be fixed before drilling . <br /> 0 CAUTION : If the drill stop is not in the proper loca - <br /> I <br /> G tion failure of a pressure decay leak test may result . <br /> 0 <br /> 7150-TOOLC <br /> I � <br /> I <br /> I Q <br /> I I <br /> I <br /> Add a 10-24 UNC thread or similar I <br /> to all three legs of the 71 SO- Tip to stop dimension must <br /> TOOLC in the area shown . Use set be 1 -3/16" to 1 - 1 /4" <br /> screws to secure tool to upper Figure 118 <br /> tube . <br /> STEP 1213 : DRILL HOLES <br /> 71 SO -TOOLC Modifications for Testable Inlet With the inlet tube and 71 SO-TOOLC in place, carefully <br /> drill a 3 / 16 " diameter hole in the upper tube using the <br /> STEP 96 : INSERT 71 SO -TOOLC OVER INLET TUBE hole in the 71 SO-TOOLC as a guide . The drill stop is po- <br /> To install the 71 SO-TOOLC (sold separately) over the sitioned so it will bottom out against the tool after the <br /> inlet tube, first loosen the thumb screw, so the tool can bit has drilled through the upper drop tube . If the stop <br /> pass freely over the inlet tube flange . Align the slot on is positioned wrong either no hole will be drilled , or a <br /> the tool with the key on the inlet tube and insert the through hole could potentially be drilled through the <br /> tool down . See Figure 9B . inlet tube . If no hole is drilled return to step 11 B and <br /> check the stop dimension . If a hole is drilled through <br /> Tool slot Hand tighten thumb screw the inlet tube or into the screw hole the assembly is not <br /> 00 o salvageable . Drill ( 2) more holes in the two remaining <br /> O O guide holes . <br /> 0 <br /> ca <br /> Loosen <br /> thumb p <br /> v <br /> screw / <br /> 4:7 0010 <br /> nlet <br /> Tube <br /> Key <br /> Orlll through uppertube onfy <br /> STEP 10B : TIGHTEN THE 71 SO -TOOLC Figure 12B <br /> Ensure that the tool seats flat against the top of the inlet <br /> tube . To prevent vertical movement of the tool during <br /> drilling , hand tighten the thumb screw against the up- <br /> per drop tube . See Figure 1013 . <br /> 9 <br />