Grizzly G0819, Owner'S Manual

Page: 55 / 84

Model G0819 (Mfd. Since 09/16)
-53-
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 replace both V-belts as a matched set.
Important: Loose belts will not allow the sanding
drum to stop immediately if the Emergency Stop
plate or Stop/Reset button is pushed.
Tool Needed Qty
Open-End Wrench 19mm .................................. 1
To check/adjust V-belt tension:
1. DISCONNECT MACHINE FROM POWER!
2. Remove lower right access panel.
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 84.
Figure 84. Checking V-belt deflection.
Pulley
Deflection
Pulley
— 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.
— 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.
1
⁄
2
"–
3
⁄
4
"
4. Loosen V-belt tension jam nut to allow main
motor to raise or lower (see Figure 85).
5. Rotate V-belt tension adjustment nut to raise
or lower main motor (see
Figure 85) until
there is approximately
1
⁄
2
"–
3
⁄
4
" deflection when
V-belts are pushed with moderate pressure,
then tighten jam nut to secure.
— Rotate adjustment nut clockwise to allow
main motor to drop and apply tension to
V-belts.
— Rotate adjustment nut counterclockwise
to raise main motor and release V-belt
tension.
6. Re-install lower right access panel.
Figure 85. V-belt tension adjustment
components.
Adjustment
Nut
Jam Nut
Main Motor
V-Belts