Grizzly G0764, Owner'S Manual, Page: 77 / 124

Model G0764 (Mfd. Since 02/14)
-75-
Belt Service
Over time, belts will stretch and wear. To maintain
efficient power transfer to the blades, make sure
the belts are properly tensioned and in good con-
dition. If belts show any glazing, fraying, or crack-
ing, replace them.
Figure 148. Scoring motor flat belt and
tensioning spring.
Scoring Motor
Flat Belt
Torsion
Spring
Replacing Scoring Motor Belt
To replace the scoring motor belt, have an assis-
tant lift the scoring motor up to relieve the belt ten-
sion, then replace the belt with a new one. When
the motor is lowered, proper belt tension will be
applied by the torsion spring.
The scoring motor belt is a standard off-the-shelf
part and can be purchased from Grizzly using part
#P07641012.
Tensioning Main Motor Belts
Tool Needed Qty
Wrench 17mm.................................................... 1
To tension main motor belts:
1. DISCONNECT MACHINE FROM POWER!
2. Open motor cabinet door, then loosen lock
knob shown in
Figure 149.
To reduce risk of shock or
accidental startup, always
disconnect machine from
power before adjustments,
maintenance, or service.
Tensioning Scoring Motor Belt
Proper tension of the scoring motor flat belt is
automatically maintained by a torsion spring on
the motor pivot rod (see
Figure 148).
Pulley
Approx.
1
⁄
4
Deflection
Pulley
Figure 150. Belt deflection when main motor
belts are properly tensioned.
Figure 149. Main motor V-belt tension controls
(table removed for photo clarity).
Lock
Handle
Adjustment
Lever
3. Move adjustment lever shown in Figure 149
up and to the left to release belt tension.
4. Apply downward pressure on motor until
there is approximately
1
⁄
4
" belt deflection
when moderate pressure is applied on the
belts (see
Figure 150).
5. Move adjustment lever up and to the right
to fully tension the belts, then retighten lock
handle loosened in
Step 2 to secure tension
setting.
6. Close cabinet door before reconnecting
machine to power.