Tensioning & Replacing Belt - Grizzly T25920 Owner's Manual

Tensioning &
Replacing Belt
The drive belt stretches as the lathe is used.
Most of the stretching will occur during the first
16 hours, but may continue with further use. If the
lathe loses power while making a cut, the belt may
be slipping and need tensioning. If the belt shows
signs of excessive wear, or damage, replace it.
Tools Needed:
Hex Wrenches 3mm, 6mm ...........................1 Ea
Rubber/Wood Mallet .......................................... 1
Tensioning Belt
1. DISCONNECT MACHINE FROM POWER!
2. Remove rear access cover and loosen belt
tension screw (see Figure 50).
Belt Tension Lever
Figure 50. Belt tension controls.
3. Press belt tension lever down, then tighten
belt tension screw.
4. Press belt with moderate pressure in center
to check tension. Belt is correctly tensioned
when there is approximately
when pushed as shown in Figure 51.
— If there is more than
the tensioning procedure until it is correct.
If tension cannot be achieved replace belt.
Model T25920/T25926 (Mfd. Since 08/14)
Belt Tension Screw
⁄ " deflection
1
2
⁄ " deflection repeat
1
2
Pulley
Pulley
Figure 51. Checking belt deflection.
5. Re-install rear access cover.
Replacing Belt
1. DISCONNECT MACHINE FROM POWER!
2. Remove rear access cover and open side
access cover.
3. Release belt tension, then remove belt from
motor pulley.
4. Loosen set screws on spindle handwheel (see
Figure 52), and turn clockwise to unthread
and remove.
Spindle Pulley
Set Screw
Figure 52. Set screw locations.
5.
Loosen spindle pulley set screw.
⁄ "
1
2
Deflection
Spindle
Handwheel
Set Screw
-33-