5
DK4100 / DK5100
Adjusting the Drill Bit Depth Stop
A Drill Bit Depth Stop is provided to stop the Drill Bit forward
motion and control the Drill Feed Cylinder cycle. When the head
of the Drill Bit Depth Stop fully engages the Depth Control Switch
the forward motion of the Drill Bit is stopped and reversed to
complete the drilling cycle. Before adjusting the Drill Bit Depth
Stop make certain your machine is DISCONNECTED from the AIR
SUPPLY. Cycle the machine via the foot switch several times to
remove air from the system. Without an air supply you can be
certain the machine will not accidentally engage while you are
performing maintenance. The Depth Control Adjuster should be
adjusted so that the pilot point of the Drill Bit is just slightly away
from the Fence when the Head has fully depressed the plunger
of the Depth Control Switch. Make sure the Depth Control Ad-
juster is locked into position with the Lock Nut.
Step 1: Loosen the Lock Nut on the Depth Control Adjuster.
Adjust the Depth Control Adjuster the approximate
position.
Step 2: Push the Drill Bit Drive Assembly forward till the Drill Bit
pilot point is slightly away from the Fence.
Step 3: Adjust the Drill Depth Control Adjuster till the Head
fully depresses the plunger on the Depth
Control Switch.
Step 4: Tighten the Lock Nut to lock the Depth Control
Adjuster in position.
Step 5: Pull the Drill Bit Drive Assembly back into the
resting position.
Changing Drill Bits
You can expect to drill between 4000 and 5000 holes in Oak with
your #DKDB drill bit before the bit will need to be sharpened. This
baseline was established using the factory settings described in
the owner’s manual. Adjust your sharpening schedule for your
settings and the material that you may be drilling.
IMPORTANT !
Before changing the drill bit, make certain your machine is DIS-
CONNECTED from the AIR SUPPLY. Cycle the machine via the foot
switch several times to remove air from the system. Without an
air supply you can be certain the bit will not accidentally engage
while you are performing maintenance.
Step 1: Disconnect the machine from the air supply.
Step 2: Remove the Top Plate to gain access to the inside
of the machine.
Step 3: Use the Chuck Key to open the Drill Chuck jaws.
Step 4: Remove the Drill Bit by pushing forward out of the
Drill Chuck and into the Drill Guide Plate until the Drill
Bit clears the Drill Chuck. Angle the Drill Bit slightly and
pull clear of the Drill Guide Plate.
Step 5: Insert a new or re-sharpened Drill Bit into the Drill
Chuck, aligning the flats on the Drill Bit shank with the
jaws of the Drill Chuck.
Step 6: Insert the Chuck Key into EACH hole of the Drill Chuck
and tighten EACH jaw of the Drill Chuck to maintain
equal pressure on the Drill Shaft.
Depth Control Adjuster
Depth Control
Switch
Head
Lock Nut
Chuck Key
Drill Bit
Drill Chuck
