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REMOVING
BLADE
Refer to Figures 8 and 10.
WARNING:
Disconnect band saw from power source
when changing or adjusting blades. Wear leather gloves
when handling band saw blades. Never wear gloves
when operating saw.
•
Loosen hex nuts (Figure 8, Key No. 30) and rotate
handwheel (Figure 8, Key No. 23) to release blade
tension. Be careful; blade may spring from saw when
tension is released. Remove table stud (Figure 10,
Key No. 15), take out the released blade and replace
with another blade.
INSTALLING
BLADE
•
Although many of the adjustments may not be altered
when blade is removed, every adjustment should be
checked prior to using a newly installed blade.
•
Follow safety precautions every time saw is operated.
•
Make sure blade teeth are pointing down towards
table. Turn blade inside out if necessary.
•
Slip new blade into table slot and over upper and
lower blade wheels and center blade on blade
wheels. Slide blade in between blade guides.
Replace table stud.
•
Tension and track blade as described in the following
sections.
TENSIONING
BLADE
Refer to Figure 8.
•
Tension blade by rotating handwheel (Key No. 23). Be
sure blade guides do not interfere with blade path.
•
Tighten blade until it is properly tensioned.
•
A properly tensioned blade will ring slightly when back
of blade is plucked (like a string on an instrument).
NOTE: Check tension of new blade. Additional tension
may be required after a few minutes of operation.
TRACKING
BLADE
Refer To Figure 8.
•
Track blade after it has been tensioned. A change in
blade tension will affect wheel alignment.
•
Proper tracking is achieved when drive and idler
wheels are aligned. Knob (Key No. 29) is used to tilt
tracking bar (Key No. 13) and align blade wheels.
•
Loosen hex nut (Key No. 30) which locks tracking
knob (Key No. 29). Turn idler wheel (Key No. 7) by
hand and observe how blade rides on wheels.
•
If blade rides away from cabinet, turn knob clockwise
to tilt idler wheel up.
•
If blade rides into cabinet, turn tracking knob coun-
terclockwise.
•
When blade is tracking properly, lock position by
holding knob and tightening hex nuts (Key No. 30)
against the cabinet.
ALIGNMENT
OF DRIVE WHEEL
Refer to Figure 11.
NOTE: Only attempt adjusting drive wheel alignment if
blade cannot be properly tracked with tracking adjust-
ment alone.
• A blade under high tension may also pull drive wheel
out of alignment.
• Adjust alignment of drive wheel using hex head bolts
(Key Nos. 8 and 30).
BLADE
GUIDES
NOTE: Adjust blade guides only after blade has been
properly tensioned and tracked.
•
Blade guides support blade at sides and rear of
blade, and prevent twisting or deflection.
•
Blade guides should not touch blade when no work-
piece is in contact with blade. Adjust guides as
described in following sections.
UPPER
BLADE
GUIDES
Refer to Figure 9.
•
Upper blade guides employ guide pins for side sup-
port and a ball bearing on an adjusting pin at rear.
•
Upper guide bracket (Key No. 13) should be posi-
tioned so guide on either side of blade will support
as much of blade width as possible without interfer-
ing with the tooth set.
• Adjust bracket depth by loosening bolts (Key Nos. 9
and 12) and sliding brackets into position. Secure
position of upper guide casting by tightening bolts.
•
Loosen set screws (Key No. 15) and adjust guide
pins (Key No. 14) to side of blade. Use a feeler gauge
to check that guide pins are .002" away from blade.
•
Lock adjustment by tightening set screws.
• Adjust thrust bearing (Key No. 17) at rear of blade by
loosening set screw (Key No. 15).
•
Position thrust bearing .002" away from back of blade.
•
Secure position of thrust bearing by tightening set
screw.
• Adjust the height of upper guide casting to clear the
workpiece by %'. Loosen knob (Key No. 30) and
rotate height adjustment knob (Key No. 22) until
upper blade guide bracket clears workpiece by %'.
Tighten knob.
LOWER
BLADE
GUIDES
Refer to Figure 9.
•
Lower blade guides employ two guide blocks for side
support. Lower guide bracket is spaced close to table
surface to minimize unsupported length of blade.
•
Loosen bolt (Key No. 19) to position lower guide
bracket on alignment block (Key No. 31 ). Adjust
lower guide bracket so guide blocks do not interfere
with blade set. Loosen set screws (Key No. 23) for
guide blocks (Key Nos. 21 and 34) and adjust guide
blocks to .002" from each side of blade.
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