Grizzly G8146Z - Manual (Page 43)

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G8144Z/G8145Z/G8146Z
Vertical Metal Cutting Bandsaw
Tensioning/
Replacing V-Belts
tensioning/replacing v-belts
To ensure optimum power transfer from the motor
to the blade without slipping, the V-belts must be
in good condition and operate under proper ten-
sion. Check V-belt tension at least every three
months—more often if the bandsaw is used daily.
V-belts stretch with use and must be periodically
re-tensioned.
Replace the V-belts as a matched set if they are
cracked, frayed, or excessively worn.
To check/tension/replace the V-belts:
1. DISCONNECT BANDSAW FROM POWER!
2. Remove the rear motor access panel.
3. Make sure the motor and lower wheel pulleys
are correctly aligned.
4. Push the center of each V-belt as illustrated
in Figure 48, using moderate force. When
tensioned correctly, the deflection should be
about
3 ⁄
4
".
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Figure 48. Checking for correct V-belt tension.
V-Belt Pulley
Alignment
The correct alignment of the motor and lower
wheel pulleys helps to ensure correct and even
tension of the V-belts, proper power transmission,
and reduced V-belt heat and wear during opera-
tion.
Remove the rear motor access panel, and use
a straightedge across both pulleys, as shown in
Figure 47, to check the pulley alignment.
If necessary, use a 19mm wrench to loosen the
two hex nuts securing the wheel pulley to its shaft,
align the wheel pulley with the motor pulley, then
re-tighten the hex bolts.
Figure 47. Checking pulley alignment.
Wheel Pulley
Hex Bolts