Delta 2000 Series - Adjusting Belt Tension; Adjusting Spindle Return Spring; Quill Adjustments; Drilling Holes to Depth

ADJUSTING BELT TENSION
The correct belt tension is determined by the center to
center dlstancfe of the motor pulley (A) and the spindle
pulley (B) Fig. 6. If it ever becomes necessary to
adjust belt tension, proceed as follows:
1. Disconnect the machine from the power source.
2. Loosen the three screws (C) Fig. 6, and while
making sure the motor pulley (A) is in parallel alignment
with the spindle pulley (B), move the motor and motor
plate (E) in or out until the center to center distance
between the motor and spindle pulley is 20”, as shown
in Fig. 6. NOTE: For clarity Fig. 6 is shown with
the belt guard removed.
Fig. 6
QUILL ADJUSTMENTS
The quill can be locked at any desired point in Its
travel, by tightening the quill locking handle (B) Fig. 7.
This is an especially desirable feature for set-up of
tooling for production type operations.
ADJUSTING SPINDLE RETURN SPRING
For the purpose of automatically returning spindle up¬
ward after a hole has been drilled, a spring is provided
enclosed in a case and is located on the left side of the
drill press head. This spring has been adjusted at the
factory and should not be disturbed unless absolutely
necessary. If it should become necessary to adjust it,
proceed as follows:
1. Remove the depth stop nut (G) and locking sleeve
(A) Fig. 7, and make sure the quill locking handle (B)
is loose.
2. Rotate the pilot wheel and lower the quill (C) Fig.
7, until the rack on the back of the quill disengages
with the pinion shaft (D). A special design is incorpo¬
rated into the quill to prevent it from dropping out of
the head casting.
3. When the quill (C) Fig. 7, is lowered as far as pos¬
sible, turn the pilot wheel counterclockwise to increase
or clockwise to decrease the return spring tension.
4. When the desired tension is obtained push up the
quill (C) until it engages with the pinion shaft (D) Fig.
7. The spring tension will then return the quill to the
up position.
5. Replace the depth stop nut (G) and locking sleeve
(A) Fig. 7.
DRILLING HOLES TO DEPTH
When drilling one or two holes to a predetermined
depth, the calibrations on the face of the depth stop rod
(F) Fig. 7, can be used.
After considerable use, play may develop between the
quill and the head casting due to wear. To compensate
for wear between the quill and head, proceed as follows:
1. Make sure the quill locking handle (B) Fig. 7. is
loose.
2. Remove two screws and washers (E) Fig. 7. Only
one of the screws and washers (E) can be seen in Fig.
7. The other screw and washer is located on the left
front side of the head casting.
3. Tighten the two quill adjusting screws which are
located directly underneath the two screws and washers
(E) Fig. 7. It is not necessary to tighten these screws
too much.
4. Rotate pilot wheel to test movement of quill and
play. If there is a slight ''drag”, quill adjusting screws
have been adjusted too tight. Back off quill adjusting
screws slightly. If the quill still has play, slightly
tighten quill adjusting screws.
5. After proper adjustment has been made, replace
screws and washers (E) Fig. 7.
When drilling a number of holes toa predetermined depth,
or if a more exact setting is required, proceed as follows:
1. Raise the locking sleeve (A) Fig. 7, and turn the
micro-nut (G) to the desired position on the stop rod (F).
2. Lower the locking sleeve (A) so it will engage
micro-nut (G) Fig. 7. Lock sleeve (A) in place with
thumb screw if drill press is mounted in other than
vertical position. When the drill press is mounted with
the chuck pointing "up”, the locking sleeve (A) and
micro-nut (G) Fig. 7, should be reversed on the stop
rod (F).
3. When locking sleeve (A) is in place on the micro¬
nut (G) Fig. 7, the micro-nut cannot be turned. When a
change in depth is required, the locking sleeve (A)
must be raised, and while it is raised, turn the micro¬
nut (G) the necessary calibration marks. Each mark
represents .002”. Then lower the locking sleeve (A).
4. The use of the micro-set stop nut will maintain the
same hole depth, no matter how many holes are to be
drilled. However, we recommend that the hole depth be
checked whenever a drill has to be sharpened or changed.
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