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CHANGING SPEED RANGE (LOW/HIGH)
This drill press has 2 variable spindle speed ranges. Low range from
280 to 1100 RPM and high range from 900-3300 RPM. To change the
spindle speed range:
WARNING! Always disconnect the Drill Press from the power source
before attempting to change the speed range (adjusting position of the
belt).
1) Open the belt and pulley cover as shown in Fig.21.
2) The large drive belt (A) Fig.21 drives the spindle and requires no
adjusting, it is the smaller speed range belt (B) which sets the speed
range and must be repositioned on the motor pulley (C) and
intermediate pulley (D).
3) First, loosen both motor fixing lock knobs (A) Fig.22 (one on each side
of the head), and turn the motor position adjusting lever (B)
counterclockwise to move the motor inward and to release the tension
on the smaller speed range belt (B) Fig.21.
4) Refer to the illustration below for proper speed range belt position for
Low or High speed range. Reposition the speed range belt to obtain
the desired speed range.
5) Once adjustment is made, turn the motor position adjusting lever (B)
Fig.22 clockwise to move the motor outward and to tension the speed
range belt (B) Fig.21.
NOTE: The belt should deflect approximately 1/2" by applying finger
pressure at the mid-point of the belt between the pulleys. If the belt slips
while drilling, readjust the belt tension.
ADJUSTING PLAY IN QUILL/SPINDLE
If a small or excessive play in the quill/spindle is noticed, an adjustment
can be made. Using the downfeed handles, lower the quill/spindle (C)
Fig.23 as far as it will go. Check to see if there is excessive play
(side-to-side movement) in the quill/spindle. If there is play, adjust as
follows:
1) Place a flat head screwdriver on the screw (B) Fig.23, while
preventing the screw from turning, loosen large hex. nut (A).
2) Slightly tighten the flat head screw (B) until the play is eliminated.
Note that a small amount of play is normal.
3) Make sure the up and down movement of the quill/spindle is
unobstructed.
4) Place a flat head screwdriver on the screw (B) Fig.23, while
preventing the screw from turning, retighten large hex. nut (A).
ADJUSTMENTS & OPERATION
FIGURE 21
FIGURE 22
FIGURE 23
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