used to adjust the amount of down force the saw head puts on the workpiece when the feed rate control valve is fully open.
1.Raise the saw arm to its full upright position and lock it in position.
2.To adjust the tension on the spring, loosen the two nuts on the threaded rod of the spring pivot post. Adjust the tension as required.
3.Tighten the two nuts against the pivot post.
4.The saw can now be returned to service.
Replacing the Drive Wheel
1.Remove the blade (see Changing Blades).
2.Remove the screw, spring washer, and washer from the speed reducer shaft.
3.Pull the wheel from the speed reducer shaft. Re- move the drive key from the speed reducer shaft.
4.Inspection: Examine drive edge and shoulder of the wheel for damage. Replace the wheel if dam- aged.
5.Install the key in the keyway in the speed reducer shaft. Align the keyway in the wheel with the key in the speed reducer shaft. Reinstall the wheel on the speed reducer shaft.
6.Install the screw, spring washer and washer in the end of the speed reducer shaft.
7.Install the blade (see Changing Blades).
Replacing Idler Wheel or Idler Bearing
1.Remove the saw blade (see Changing Blades).
2.Remove the screw, spring washer, and washer from the idler shaft.
3.Remove the idler wheel. Remove the bearing from the idler wheel.
4.Inspection: Examine the drive edge and shoulder of the idler wheel for damage. Replace the wheel if damaged.
5.Inspect bearings for damage and smooth operation, Replace if faulty.
6.Install the bearing in the idler wheel. Install the idler wheel on the idler shaft.
7.Install the screw, spring washer and washer in the idler shaft.
8.Install the blade (see Changing blades).
Adjusting the Blade Guides
The
To make accurate cuts and prolong blade life, the blade guide supports should be set to just clear the workpiece to be cut.
Blade Guide
Supports
Figure 17: Blade guide supports
1.Loosen the knob on the blade guide support and slide the guide left or right as required. Repeat for the other blade guide.
2.Set the blade guide supports as required to accom- modate the width/diameter of the workpiece. The blade guides should be positioned so the guides do not contact the workpiece as the saw head moves downward through the workpiece.
Replacement of Carbide Blade Guide
Refer to Figure 18.
1.Remove the cap screw and remove the carbide guide. Discard the carbide guide.
2.Install the replacement carbide guide on the guide bearing support. Install the cap screw. Set the guide so it just contacts the side of the saw blade.
3.Using a machinist's square, check squareness of the blade to the table.
Concentric Bushing |
|
Cap Screw |
|
(Typical) |
|
Blade Guide Bearings |
|
Carbide |
|
Guides (2) |
|
Cap Screw | Eccentric |
(Typical) | Bushing |
Figure 18: Carbide blade guides and guide bearings | |
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