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14
11.6 Replacing drive motor
1. Disconnect motor from all electrical power.
Unplug the motor if it is plugged into a socket.
Shut off the power to the branch and remove
the connection to the junction box if the motor is
hard wired to the branch.
2. Remove drive belt from drive motor pulley (see
sect. 11.5).
3. Remove motor pulley.
4. Open motor junction box and disconnect the
power cord wires from their terminals.
5. Remove nuts, washers and bolts that secure
motor to mounting plate.
6. Installation of new motor is a reversal of the
above steps.
11.7 Replacing drive wheel
1. Remove blade (see sect. 11.4).
2. Remove screw, spring washer, and washer
from the speed reducer shaft.
3. Pull wheel from speed reducer shaft. Remove
drive key from speed reducer shaft.
4. Inspection: Examine drive edge and shoulder of
the wheel for damage. Replace wheel if
damaged.
5. Install key in keyway in the speed reducer shaft.
Align keyway in wheel with the key in speed
reducer shaft. Reinstall wheel on speed reducer
shaft.
6. Install screw, spring washer and washer in the
end of speed reducer shaft.
7. Install blade (see sect. 11.4).
11.8 Replacing idler wheel or idler
bearing
1. Remove saw blade (see sect. 11.4).
2. Remove screw, spring washer, and washer
from idler shaft.
3. Remove idler wheel. Remove bearing from idler
wheel.
4. Inspection: Examine drive edge and shoulder of
the idler wheel for damage. Replace wheel if
damaged.
5. Inspect bearings for damage and smooth
operation. Replace if faulty.
6. Install the bearing in idler wheel. Install idler
wheel on idler shaft.
7. Install screw, spring washer and washer in idler
shaft.
8. Install blade (sect. 11.4).
11.9 Adjusting blade guides
The band saw has adjustable blade guide supports
(see Figure 17). These allow you to set the blade
guides for varying widths of workpieces.
To make accurate cuts and prolong blade life, the
blade guide supports should be set to just clear the
workpiece to be cut.
1. Loosen knob on blade guide support and slide
the guide left or right as required. Repeat for
other blade guide.
2. Set the blade guide supports as required to
accommodate the width/diameter of workpiece.
The blade guides should be positioned so the
guides do not contact workpiece as the saw
head moves downward through workpiece.
Figure 17: Blade guide supports
11.10
Replacing carbide blade guides
Refer to Figure 18.
1. Remove front blade guide by removing
adjustment knob, spring, and shaft.
2. Remove rear blade guide by removing its
attachment screw.
3. Install replacement blade guide in the rear
guide location. Secure with attachment screw.
Figure 18: Carbide blade guides and guide
bearings.
4. Install replacement blade guide in the front
guide location. Install shaft into guide. Install
spring and adjustment knob.
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