Removing Blade; Installing Blade - Palmgren 83118 Manual De Instrucciones

Palmgren Operating Manual & Parts List
OPERATION (CONTINUED)
• Use proper blade and speed for the cutting operation.
• After turning saw on, allow blade to come to full speed before
attempting any cutting operation.
• Support workpiece properly and use a smooth steady feed to
guide work through the cut. Use push sticks or push blocks
when required.
• Keep hands away and out of line with moving parts.
• Always wear eye protection.

REMOVING BLADE

Refer to Figures 8, 9 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 three screws (Figure 9, Ref. No. 5). Remove blade guards
(Figure 9, Ref. Nos. 4 and 37). Loosen hex nuts (Figure 8, Ref.
No. 30) and rotate handwheel (Figure 8, Ref. No. 23) to release
blade tension. Be careful; blade may spring from saw when
tension is released. Remove table stud (Figure 10, Ref. 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. Replace blade
guards after blade guide adjustment.
• Tension and track blade as described in the following sections.
TENSIONING BLADE
Refer to Figure 8.
• Tension blade by rotating handwheel (Ref. 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 ten-
sion will affect wheel alignment.
• Proper tracking is achieved when drive and idler wheels are
aligned. Knob (Ref. No. 29) is used to tilt tracking bar (Ref. No.
13) and align blade wheels.
• Loosen hex nuts (Ref. No. 30) which lock tracking knob (Ref. No.
29). Turn idler wheel (Ref. 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 counterclockwise.
• When blade is tracking properly, lock position by holding knob
and tightening hex nuts (Ref. 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 adjustment alone.
• A blade under high tension may also pull drive wheel out of
alignment.
• Adjust alignment of drive wheel using hex head bolts (Ref. No. 10).
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 workpiece 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 support and a
ball bearing on an adjusting pin at rear.
• Upper guide bracket (Ref. No. 13) should be positioned so
guide on either side of blade will support as much of blade
width as possible without interfering with the tooth set.
• Adjust bracket depth by loosening bolts (Ref. Nos. 9 and 12)
and sliding brackets into position. Secure position of upper
guide casting by tightening bolts.
• Loosen set screws (Ref. No. 15) and adjust guide pins (Ref. 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 (Ref. No. 17) at rear of blade by loosening
set screw (Ref. 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 1 / " . Loosen knob (Ref. No. 30) and rotate height adjustment
4
knob (Ref. No. 22) until upper blade guide bracket clears work-
piece by 1 / " . Tighten knob.
4
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 mini-
mize unsupported length of blade.
• Loosen screw (Ref. No. 5) and remove blade guard (Ref. No. 37).
• Loosen bolt (Ref. No. 19) to position lower guide bracket on
alignment block (Ref. No. 31). Adjust lower guide bracket so
guide blocks do not interfere with blade set. Loosen set screws
(Ref. No. 23) for guide blocks (Ref. Nos. 21 and 34) and adjust
guide blocks to .002" from each side of blade.
• Adjust thrust bearing (Ref. No. 36) at rear of blade by loosening
set screw (Ref. No. 23). Position thrust bearing .002" away from
back of blade. Secure position of thrust bearing by tightening
set screw.
• Replace blade guard and secure in position.
BLADE SELECTION
• Blades vary depending on type of material, size of workpiece
and type of cut that is being performed.
• Characteristics which make blades different are width, thick-
ness and pitch.
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83118