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5 Field cutting and Observe the following procedures when operating the Taper Maker.Refer to Fig 5-2. <br /> tapering primary pipe . Check blade angle by using a factory taper as a guide.When properly adjusted, <br /> (cont.) the blade should be in contact with the taper over the entire taper length. If <br /> adjustment is required,loosen the blade retaining screws and adjust the blade <br /> angle with the set screw. <br /> • Note that the cutting blade has four cutting edges. <br /> • Mark the required taper length on the pipe.Refer to the taper length table below. <br /> • Insert the threaded collet shaft through the base casting and the mandrel. <br /> • 4A Select the appropriate size collet and slide it onto the mandrel,making sure the <br /> key inside the collet engages the slot of the mandrel. <br /> • Hold the collet and turn the collet control knob clockwise until the collet begins to <br /> expand.Note that it may be necessary to adjust the cutting head to <br /> accommodate different size collets. <br /> • Insert the collet into the pipe until the back end is flush with the end of the pipe. <br /> • Expand the collet to grip the inside of the pipe by turning the collet control knob <br /> clockwise. <br /> • Lower the cutting blade until it contacts the pipe by turning the cutting head <br /> adjustment handle clockwise. <br /> • Using the ratchet handle,turn the tool clockwise,gradually lowering the cutting <br /> blade by turning the cutting head <br /> adjustment handle clockwise. <br /> Continue until a smooth taper of <br /> Fig.5-3.Dualoy30001L can be tapered in the proper length is obtained.The <br /> all sizes using the Ameron Taper Maker. thin edge of the completed taper <br /> The ratchet handle makes Taper Maker should be no less than 1/32 inch <br /> convenient to use in confined spaces <br /> when repairing existing lines. (0.75 mm)thick. <br /> For complete operating <br /> information,refer to the <br /> appropriate Taper Maker Product <br /> Data/Operating Instructions. <br /> Tapering with'Pencil Sharpeners' <br /> Pipe in 2,3 and 4-inch sizes is most often tapered using one of several'pencil <br /> sharpener'tapering tools.Manufacturers'names and addresses may be obtained from <br /> Ameron distributors.Pipe tapered with these tools should be periodically checked <br /> against a factory taper for taper length and taper angle. <br /> Taper lengths _ <br /> Nominal Taper �' ~ <br /> Pipe Size Length <br /> (in) (mm)— (in) (mm) <br /> 2 50 1 ih--3s- � <br /> 3 80 1 3/4 44 <br /> 4 100 17/8 48 <br /> 6 150 23/4 70 <br /> Fig.5-4.Pipe in 2 and 3-Inch sizes is <br /> typically tapered using one of several <br /> 'pencil sharpener'tapering tools <br /> available from outside sources. <br /> 6 <br />