Delta 17-965 Instruction Manual Page 13

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13
ADJUSTING THE SPINDLE RETURN SPRING
The spindle will automatically return slowly to its upper position when the handle is released. The spindle return spring
was properly adjusted at the factory. However, to adjust, if necessary:
1. Loosen the nuts (B) and (E) Fig. 21, but do not remove. Make sure that the spring housing (A) remains engaged with head
casting (C).
2. While firmly holding the spring housing (A) Fig. 22, pull out the housing and rotate it (counter-clockwise to
increase or clockwise to decrease the spring tension) until the boss (D) is engaged with the next notch on the
housing. Tighten the two nuts (B) Fig. 22 to hold the housing in place
IMPORTANT: The inside nut (B) should not contact spring housing (A) when tightened.
DISCONNECT MACHINE FROM POWER SOURCE.
Fig. 21
Fig. 22
A
B
D
A
B
C
Raise and lower the spindle with the pinion handles (A)
Fig. 23. You can lock the quill (B) Fig. 23 at any point in
its travel by tightening locking lever (C).
NOTE: The quill locking lever (C) is spring-loaded. Pull
outward on handle (C) and reposition it on the hub (D) of
the handle.
R
AISING AND LOWERING THE SPINDLE
Fig. 23
A
B
C
D
NOTE: Use drill bits with shank diameters of 5/8" or less.
NOTE: After installing a drill bit, use the supplied key to tighten all three locations on the chuck, two of which are shown
at (A) Fig. 24.
The use of accessories and attachments not recommended by Delta may result in risk of injury.
IMPORTANT: When the workpiece (B) Fig. 24 is long
enough, position it on the table with one end against the
left side of the column (C) to prevent the workpiece from
rotating. If it is not possible to support the workpiece
against the column, clamp the workpiece to the table.
Fig. 24
A
A
B
C
MACHINE USE
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