Powermatic PM1800 Saw User Manual


 
21
Guide Post
Refer to Figure 34.
1. Disconnect band saw from power source.
2. Loosen lock handle (A) and raise or lower
guide post by rotating the handwheel (B).
3. Position the blade guide assembly so that
the bottom of the guide bearings are about
3/16” above the material to be cut. Or,
simply lower the guide post until the scale
pointer (C) indicates the height of your
workpiece. This provides minimal clearance
between the workpiece and the bottom of
the guide bearings, which will minimize
blade deflection as well as enhance
operator safety.
4. Tighten lock handle (A).
Guide Post Parallelism
The guide post should be parallel to the blade
throughout the vertical travel of the guide post;
thus the guide bearings will maintain their
relationship to the blade at any height from the
table and they won’t have to be re-set each time
the guide post is moved. This setting has been
accurately made by the manufacturer and
should not require immediate attention, but it
may be checked in the future as follows:
1. Disconnect band saw from power source.
2. Move blade tension lever to “Full Tension”
position.
3. The guide bearings in low position should
already be set in relation to the blade (see
“Upper Blade Guides”). Also, the table
should be square with the blade (See “90°
Table Stop”).
4. Loosen the lock handle (A, Figure 34) and
raise the guide post to a high position.
5. Confirm that the guide post travels straight
up and down, and the guide bearings
maintain their relationship to the blade.
6. If the guide post does not go straight up and
down (the blade begins deflecting when the
guide post is raised), slightly loosen the four
hex cap screws (D, Figure 34).
7. Left and right adjustment is accomplished
using a combination of the four hex cap
screws (D); forward/back adjustment is
accomplished using the two set screws (E).
8. When finished adjusting, securely tighten
the four hex cap screws (D).
9. Re-check the setting by raising and lowering
the guide post.
Figure 34