13
7.9 Adjusting blade tracking
Blade tracking adjustment
requires running the saw with the back cover
open. This adjustment must be completed by
qualified persons only.
Note: Before making any tracking adjustments,
try a new blade. Warped blades will not track.
Blade tracking has been set at the factory and
should not require adjustment. If tracking
problems occur, adjust the machine as follows:
1. Move saw bow to vertical position and lock
in place by shutting off hydraulic cylinder
valve.
2. Confirm that blade tension is set properly.
To adjust, see section 7.5, Blade tension.
3. Open back cover by loosening lock knobs.
4. Run the saw and observe the blade. Blade
should run next to but not tightly against
wheel flange.
5. Loosen bolts (A, Figure 18).
6. Turn set screw (B, Figure 18) while
observing the blade tracking on the wheel.
Turn set screw clockwise to track the blade
closer to the wheel flange. Turn set screw
counter-clockwise to track blade away from
wheel flange.
7. Once tracking is set, tighten bolts (A, Figure
18).
Figure 18
7.10 Adjusting blade guide bearings
1. Disconnect machine from power source.
2. Raise bow to vertical position and lock in
place by turning off hydraulic cylinder valve.
3. Loosen hex cap screw (A, Figure 19) and
adjust assembly so that the back roller
bearing is approximately 0.003" to 0.005"
from the back of the blade.
4. Turn nut (B, Figure 19) to adjust the
eccentric bearing snug to the blade. Blade
should still move up and down freely when
grasped as in Figure 20. Warning! Make
sure power is disconnected and hands
are protected before handling blade. Be
sure that the blade teeth do not interfere
with the roller bearings.
5. Repeat for other blade guide assembly.
6. Connect machine to power source.
Figure 19
Figure 20
7.11 Adjusting bow weight
Bow weight is one of the most important
adjustments of the saw. If bow weight is not set
properly, one can expect poor performance,
crooked cuts, tooth stripping, stalling, and the
blade popping off the blade wheels. The
hydraulic feed rate unit will not compensate for
improper bow weight. Bow weight has been set
at the factory and should not need adjustment.
If adjustment becomes necessary:
1. Disconnect machine from power source.
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