20
20
5. Remove the belt.
6. Check the drums and platen for scoring or signs of wear which might require service or
replacement.
7. Check the drums for looseness which might cause tracking problems. Correct any loose
condition by tightening or replacing any parts as required.
8. Slide the new belt onto the drums and platen. (Check that the direction arrows on the inside
of the belt match the direction that the motor turns.
9. Slide the tension handle to the left to tighten the belt, making sure the belt stays centered on
the drums.
10. Turn the drums by hand to see if the belt tracks true. JUST BECAUSE THE OLD BELT
TRACKED CORRECTLY DOES NOT MEAN THE NEW BELT WILL. Always check the
tracking when replacing a belt.
Tracking Adjustment
1. To adjust the tracking, power up the machine.
2. Jog the motor on and off to observe the tracking, and turn
the tracking knob as necessary to make the belt track in the
center of the platen and drums. Turn the tracking knob (
C
)
clockwise (
cw
) to move the belt to the right, and
counterclockwise (
ccw)
to move the belt toward the left.
3. When the belt seems to be tracking correctly, turn the
motor on and leave it running while fine tuning the tracking.
4. When satisfied, turn the motor
OFF
, and re-attach the
plastic dust chute, the top end cover, and the bottom cover.
Installing Abrasive Discs
1. Disconnect power to the machine to prevent accidental start-ups.
2. Peel off the old abrasive disc.
3. Clean the drive disc surface using naptha or a similar nonflammable solvent that will dry
film-free.
4. Pull the protective backing half off the new abrasive disc.
5. Position the new disc carefully so it is centered accurately on the drive disc.
6. When accurately centered, remove the rest of the protective backing and press the abrasive
disc firmly against the drive disc so complete adhesive contact is made.
7. Reconnect power to the machine.
C
figure 9
