9
71SO-TOOLC PROCEDURE BELOW,
FOR 71SO-TOOL, SEE PAGE 8
FOR 71SO-TOOLCT, SEE PAGE 10
Note: 71SO-TOOLC can only be used with testable
overll valves if modied as shown below.
STEP 9B: INSERT 71SO-TOOLC OVER INLET TUBE
To install the 71SO-TOOLC (sold separately) over the
inlet tube, rst loosen the thumb screw, so the tool can
pass freely over the inlet tube ange. Align the slot on
the tool with the key on the inlet tube and insert the
tool down. See Figure 9B.
STEP 10B: TIGHTEN THE 71SO-TOOLC
Ensure that the tool seats at against the top of the inlet
tube. To prevent vertical movement of the tool during
drilling, hand tighten the thumb screw against the up-
per drop tube. See Figure 10B.
STEP 11B: PREPARE DRILL AND BIT
Conrm that the stop on the 3/16” drill bit supplied
with the 71SO-TOOLC is in the correct position before
drilling. The stop is factory installed at a distance be-
tween 1-3/16” to 1-1/4” from the tip with the 71SO-
TOOLC. If the stop is not at the correct position it must
be xed before drilling.
CAUTION: If the drill stop is not in the proper loca-
tion failure of a pressure decay leak test may result.
STEP 12B: DRILL HOLES
With the inlet tube and 71SO-TOOLC in place, carefully
drill a 3/16” diameter hole in the upper tube using the
hole in the 71SO-TOOLC as a guide. The drill stop is po-
sitioned so it will bottom out against the tool after the
bit has drilled through the upper drop tube. If the stop
is positioned wrong either no hole will be drilled, or a
through hole could potentially be drilled through the
inlet tube. If no hole is drilled return to step 11B and
check the stop dimension. If a hole is drilled through
the inlet tube or into the screw hole the assembly is not
salvageable. Drill (2) more holes in the two remaining
guide holes.
Add a 10-24 UNC thread or similar
to all three legs of the 71SO-
TOOLC in the area shown. Use set
screws to secure tool to upper
tube.
71SO-TOOLC Modications for Testable Inlet
Figure 11B
Figure 12B
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