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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 /> CAUTION : If the drill stop is not in the proper loca - <br /> tion failure of a pressure decay leak test may result. <br /> o <br /> 71 SO-TOOLC <br /> O <br /> f � I <br /> I I <br /> i <br /> I <br /> Add a 10-24 UNC thread or similar <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 126 : 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 9B : 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 /> Tool slot Hand tighten thumb screw check the stop dimension . If a hole is drilled through <br /> 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 /> O Q <br /> Loosen _ <br /> thumb <br /> strew <br /> L:7 <br /> v <br /> 0 <br /> Net <br /> Tube <br /> Key <br /> DO through uppertubeonfy <br /> STEP 10B : TIGHTEN THE 71SO4OOLC Figure 128 <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 10B . <br /> 9 <br />