ERICO LENTON Mid-Range Bar Threader - Manual (Page 21)

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The thread profile should be checked with a
brand new chaser. To check the bar end diameter after threading slide the
bar end gauge over the bar and look to see if the end of
the bar falls within the step range of the gauge.
Checking Threads and Bar End Engagement
If the diameter of the bar is off, the adjustment screw is used to
make up the difference. The adjustment screw is located at the
back of the machine. Turning it in, increases the bar end diameter,
turning it out, decreases the diameter.
If the diameter of the bar is off, the proper adjustment can very
easily be made by measuring the amount of protrusion from or
recession into the gauge.
Example: If the bar is protruding beyond the gage by 1/8 inch you
would turn the adjustment screw in (clockwise) so that the machine
body would move forward 1/8 inch. If the bar was 1/8 inch too
short you would turn the screw out (counter-clockwise) moving
the body of the machine back 1/8 inch.
A scrap piece of bar should be used to set the bar end
gauge prior to making a production run.
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