7 x 12 Cut-off Band Saw - Igor Chudov

Replacing the drive wheel
1. Complete steps 1 through 6 in Replacing blades.
2. Remove the snap ring which secures the lower wheel
to the gearbox output shaft.
3. Pull the wheel off of the gearbox output shaft using a
suitable puller.
4. Inspection: Examine the wheel for damage on its drive
edge, shoulder, or the shaft boss. Replace if any faults
are found.
5. Reinstall the wheel by pressing and/or tapping it back
onto the shaft using a soft-faced mallet.
6. Reinstall the snap ring which retains the wheel on the
shaft.
7. Complete steps 7 through 14 of Replacing blades and
any steps in Adjusting blade tracking, as needed to
complete the installation.
Installing the
vertical sawing table
1. Disconnect the saw from its electrical power source to
prevent accidental motor start-ups.
2. Raise the saw to full vertical position and lock in
position using the quick lock valve.
3. Remove the two flat head cap screws which hold the
small cutting plate to the bearing seat.
4. Place the large vertical cutting plate in position and use
the two flat head cap screws to attach it firmly to the
bearing seat.
5. Reconnect the saw to electrical power and it is ready to
use as a vertical band saw.
Replacing idler wheel
or bearings
1. Complete steps 1 through 6 in Replacing blades.
2. Remove center bolt and washer from the idler wheel.
3. Remove the two bolts which hold the sliding plate draw
block in the sliding plate and remove the wheel and draw
block from the saw as an assembly.
4. Using a suitable puller or press, pull or press the
wheel, complete with bearings, off of the draw block.
5. Using a suitable puller, remove the two bearings from
inside the wheel hub.
6. Inspections: Inspect the bearings for evidence of
leakage and turn them to feel for roughness or other
internal flaws. Replace if leaking or roughness is felt.
Examine the wheel for damage on its drive edge, shoulder,
or the bearing mounting boss. Replace if any faults
are found.
7. To install new bearings use a suitable press to press
them in the center of the wheel until the races are flush
with the shoulder inside the wheel hub. (See Figure 17.)
8. Press the bearing and wheel assembly onto the shaft
of the sliding block.
9. Reinstall the washer and bolt which retain the wheel on
the shaft.
10. Reinstall the draw block and wheel assembly to the
saw arm using the bolts to secure it to the plate.
11. Complete steps 7 through 14 of Replacing blades and
any steps in Adjusting blade tracking, as needed to
complete the installation.
Figure 17: Idler wheel bearing
configuration
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