Delta 20-330 Instruction Manual Page 12

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12
ADJUSTING BLADE TRACKING
1. Place the saw arm in the vertical position and open
the wheel cover (A) Fig. 17.
2. Turn on the band saw. The blade is tracking properly
when the back of the blade (B) Fig. 17, is just touching
the edge of the wheel flange (C). The back of the blade
should not be rubbing against the flange.
3. If an adjustment is necessary the blade guide
bearings and blade support bearings (E) Fig. 19 (two of
which are shown) should be clear of the blade.
4. Loosen screw (D) Fig. 18.
5. With the band saw running, turn adjusting screw (E)
until the blade is tracking properly making certain blade
tension is maintained by turning blade tension knob. (F).
The blade is tracking properly when the back side of the
saw blade just touches the flange on the wheel.
6. Tighten screw (D) Fig. 18, when adjustment is
complete.
7. IMPORTANT: IT IS POSSIBLE WHEN MAKING
THIS ADJUSTMENT TO OVER TIGHTEN THE
ADJUSTING SCREW (E), FIG. 18, AND CAUSE THE
BLADE TO BE MIS-ALIGNED. If this happens, loosen
the adjusting screw (E) several turns but do not remove
it from its threaded hole and loosen screw (D). Turn
screw (D) clock-wise until it stops but do not tighten.
Then turn the adjusting screw (E) clockwise until it
bottoms. Turn on the machine and turn adjusting screw
(E) clockwise a small amount at a time until the blade is
tracking correctly and tighten screw (D) Fig. 18.
8. After the blade is tracking properly make sure to ad-
just the blade guide bearings and blade support
bearings.
Fig. 17
Fig. 18
ADJUSTING BLADE SUPPORT
BEARINGS
DISCONNECT MACHINE FROM
POWER SOURCE.
1. The blade support bearing (A) Fig. 19, should be ad-
justed so it just touches the back of the saw blade after
the blade is tracking properly. To adjust, loosen screw
(C) and move the bracket (D) up or down until the
support bearing (A) just touches the back of the blade
(B). Then tighten screw (C).
2. Adjust the other blade support bearing in the same
manner.
Fig. 19
D
E
F
B
C
A
D
C
A
B
E
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