Jet JSG-6DC, Operating Instructions And Parts Manual, Page: 18 / 28

18
Belt Tracking Adjustment
The belt should run at the center of the belt arm
without veering to the left or right. Check this as
follows:
1. Disconnect machine from the power source.
2. Rotate the belt by hand and observe how it
tracks. The belt should run centered on the
belt wheels.
3. If the belt has a tendency to track left or
right of center, loosen locking nuts (A,
Figure 28).
4. Turn the front screw (B, Figure 28) while
turning the belt by hand and observe belt
tracking. Once the belt starts to move in the
desired direction, stop and turn the rear
screw (C) in the same manner. NOTE:
These adjustments are sensitive and should
be done in small increments.
5. Grasp the tensioning adjustment handle (D)
and start the machine. Be ready to pull
down on the tension adjustment handle
should the belt want to run off the belt
wheel.
6. Fine adjustment of the tracking may be
necessary. When the tracking has
stabilized, slowly release the belt tensioning
arm and let the machine run for two
minutes.
7. Tighten lock nuts (A) when tracking
adjustments are satisfactory.
Belt Replacement
1. Disconnect machine from the power source.
2. Remove the lock knob and open the left
side panel.
3. Release belt tension using the handle (D,
Figure 28), and slide belt off the wheels.
4. Refer to “Installing Abrasives” section for
instructions on installing the new belt.
Abrasive Disc Replacement
1. Disconnect machine from the power source.
2. Slowly work the tip of a knife under the
abrasive disc, and work it around the
circumference of the disc until abrasive can
be removed by hand.
3. Clean the aluminum disc of any residual
adhesive, using mineral spirits or similar
solvent. Allow to dry.
4. See “Installing Abrasives” for instructions on
installing the new abrasive disc.
Figure 28
Maintenance
Before doing maintenance on
the machine, disconnect it from the electrical
supply by pulling out the plug or switching
off the main switch! Failure to comply may
cause serious injury.
Wipe the machine down after each use.
Keep exposed metal surfaces clean and rust-
free. A light coat of paste wax applied to the
tables will help protect the surfaces.
Make periodic inspections of the sander,
checking fastener tightness, abrasive wear,
tracking accuracy, etc. Listen for any unusual
motor noises or vibrations that might indicate
bearing fatigue.
(Note: All rotating parts run on sealed ball
bearings and do not require lubrication.)
If you will not be using the machine for an
extended period, remove the abrasive belt; this
will prevent it from stretching and will prolong its
life.
If the power cord is worn, cut, or damaged in any
way, have it replaced immediately.