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Macro-Core Soil Sampler — Closed Piston Operation <br /> Piston Point Release <br /> 1 Move the probe unit away from the top of the probe rods <br /> to allow for room to work <br /> 2 Remove drive cap and lower the piston release rod see m <br /> x <br /> Figure 3 and extension rods down the inside diameter of <br /> the probe rods using Extension Rod Quid. Canis, see <br /> Figure 4, or couplers to Loin rods together Adcl enough R- <br /> a <br /> extension rods for the release rod to reach the bottom of <br /> the sampler <br /> l i <br /> 3 ,attach the Extension Rod Handle to the top extension rod <br /> and rotate the handle clockwise (Figure 5) The release <br /> rod will drop do�%n into the bolt grootie on the top of the <br /> pistol; Rotate the handle approximately tour complete <br /> Previously cored hole turns until resistance is met and the holt mous its limit or <br /> rotation This allots the drive pant assembly to be <br /> pushed up into the simpler as sample material tills the <br /> I mer <br /> �q 4 Remove the extension rods and release root The bolt or <br /> (In%e point assemhl� will not be attached to the end <br /> y� e\ten5lon rod but ti%ill remain inticle the sample liner��ith <br /> Figure 5 Rotating the the sample materials <br /> Extension Rod Handle will <br /> a= disengage the Piston Bolt 5 Reattach drive cap and drive sampler an additional <br /> i w to allow materials to flow -3 reet 0 m)to till sample liner <br /> into the MC liner <br /> i� <br /> r � <br /> J `e - <br /> r <br /> Figure 3 The Piston Release Figure 4 using Exten- Extension Rod Handle is <br /> Rod is lowered down the sion Rod Quick Links rotated clockwise to <br /> inside of the probe rods disengage piston from cutting <br /> shoe <br /> 4P <br /> 0 <br /> The Tools for Site Investigation <br /> � O°op�Qo�° q�'p�Qor?<9 �j° a�S, opoa.�o �,o �'ao° F' o�a � RC] .� a.OoLf �34 �•'00 �°a . � <br /> B.9 <br />