UniqueTek Micrometer Powder Bar Kit Manual
UniqueTek, Inc. 540 W. Iron Ave., Suite 118 web: www.uniquetek.comPhone: 480-507-0866 Mesa, AZ 85210 e-mail: info@uniquetek.comFax: 480-507-0867 - 2 - Rev. 20 04/15Step 5: Install Micrometer AssemblyNOTE: Do not remove the plastic strip(s) jammed between the micrometer shaft and the threaded bushing. They arethere to provide friction to keep the micrometer setting from drifting during use.a. Set the micrometer to a reading of 0.000.b. Place the Powder Bar Insert in the Powder Bar. Make sure to orient the flat sides of the powder bar and powderbar insert so they are both on the top side of the Powder Bar (photo below shows the bottom side).c. Hold the Powder Bar vertically with the Powder Bar Insert at the bottom (minimum powder setting) and insert themicrometer assembly down through the hole in the Powder Bar where the Powder Bar Adjustment Screw wasremoved. Screw the ¼-28 adapter bushing into the Powder Bar Insert until the micrometer head is seated againstthe end of the Powder Bar.d. Check that the micrometer is still set to 0.000 and then position itso the index mark is aligned with the pencil mark you made on thePowder Bar during Step 1. (DO NOT FORCE)e. If the Powder Bar Insert does not touch the end of the Powder Barcavity or if the micrometer head is not fully seated in the hole, pullit out slightly and screw the ¼-28 adapter bushing a little more orless into the Powder Bar Insert. Repeat until the micrometer readsas close as possible to 0.000 when the Powder Bar Insert justbottoms out against the end of the Powder Bar cavity.NOTE: Do not worry if the micrometer does not read exactly 0.000.The micrometer is only for indexing purposes, so zero is an arbitrarynumber. However, it is better if it reads slightly greater than 0.000 rather than below 0.000 when the Powder Bar Insertbottoms out, so the micrometer setting will always be a positive number. This way you will never accidentally confuse–0.010 with +0.010. The Micrometer has been designed with more range than is needed so you will still be able to usethe full range of powder bar adjustment.Step 6: Loctite® Micrometer Assembly Into PlaceThe micrometer head must be held in place using the LocTite supplied in the kit. Before applying the Loctite, makeabsolutely certain that the powder bar is correctly assembled, the micrometer zero is adjusted and the micrometerhead index mark is aligned with the mark you applied to the Powder Bar in Step 1.Note: Photo in Step 5 also indicates locations for Loctite application.a. Twist off the top of the Loctite container and attach the application needle.b. Apply 2 drops of LocTite to the ¼-28 bushing screw threads at the point where they engage the Powder Bar Insert.Caution: Do not get Loctite on the small #2 screw at the very tip of the micrometer shaft!c. Lift the micrometer head up 1/8th-inch and apply Loctite directly to the black base where it inserts into the PowderBar hole. Apply only enough Loctite to wet the micrometer base all the way around.DO NOT APPLY TOO MUCH LOCTITE! Excess Loctite can drip down onto the micrometer shaft and seize themicrometer. Use a cotton swab to remove any excess Loctite then apply a drop of oil to the micrometer shaft toprevent any remaining Loctite residue from bonding.d. Set the powder bar where it will be undisturbed while the Loctite cures. Clamp it vertically in a vice, prop itvertically between heavy books or lay on a flat surface (with the micrometer head hanging off the edge) so that theLoctite cures with the powder bar insert aligned with the powder bar. You may wish to add weight to hold it tightlywhile the Loctite cures. It is important that the powder bar insert is held aligned with the powder bar while theLoctite cures. Allow 24 hours for the Loctite to fully cure.Step 7: Reinstall Powder Bar PostThe Powder Bar Post must be filed before installation to eliminate any contact with the micrometer shaft. Use a smallfile, emery board or rolled up sand paper to file the inside surfaces of the Powder Bar Post where it touches themicrometer shaft. This is very soft metal so only a few strokes should be required. There must be absolutely nocontact between the powder bar post and the micrometer shaft.Note: The new style Dillon Auto Powder Measure (without return springs) does not need a Powder Bar Post afterthe micrometer is installed. The setscrew used on the Belted Magnum and SL900 Shot Bar bar is also not needed.Step 8: Install Micrometer Powder Bar in your Powder Measure.Install the Micrometer Powder Bar in the Powder Measure by following in reverse the procedures used to disassemblein Step 2. That is it! |
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