Grizzly G0866, Owner'S Manual, Page: 61 / 100

Model G0866 (Mfd. Since 11/18)
-59-
Checking/Adjusting
V-Belt Tension
The V-belts must be tensioned properly for best
performance, and to ensure the sanding drum
stops when the emergency brake is applied.
Always check all V-belts at the same time.
IMPORTANT: Loose belts will not allow the sand-
ing drum to stop immediately if the EMERGENCY
STOP! plate or Emergency Stop button is pushed.
Tool Needed Qty
Open-End Wrench 12mm .................................. 1
To check/adjust V-belt tension:
1. DISCONNECT MACHINE FROM POWER!
2. Open lower left and right access panels.
— If there is approximately
1
⁄
2
"–
3
⁄
4
" deflection
when V-belts are pushed with moderate
pressure, V-belts are properly tensioned,
and no adjustment is necessary.
Figure 103. Checking V-belt deflection.
Pulley
Deflection
Pulley
1 ⁄
2
"– 3 ⁄
4
"
Note: Variables such as feed rate, depth
of cut, and type of sanding belt can play
a big part in determining proper amount
of downward pressure exerted by rollers.
Some experimentation may be necessary to
achieve desired results. However, under no
circumstances should pressure rollers be set
even with, or higher than, sanding rollers.
11. Install V-belts (refer to Changing V-Belts on
Page 60).
12. Lower table and remove 2x4s.
13. Close and secure all access doors.
3. Check belt tension: each belt is correctly ten-
sioned when there is approximately
1
⁄
2
"–
3
⁄
4
"
deflection when it is pushed with moderate
pressure, as shown in
Figure 103.
— If there is not approximately
1
⁄
2
"–
3
⁄
4
" deflec-
tion when V-belts are pushed with mod-
erate pressure, V-belts are not properly
tensioned. Proceed to
Step 4.
4. Loosen applicable V-belt tension jam nuts
to allow motors to raise or lower (see
Figure 104).
Figure 104. V-belt tension adjustment
components.
Adjustment
Nut
Jam Nut
V-Belt
V-Belt
Jam Nut
Adjustment
Nut