Grizzly G1021 instruction manual To Check Belt Tension, To Inspect the Gearbox

TO CHECK BELT TENSION:

Squeeze the V-Belts at their midpoints with mod- erate finger pressure. You should be able to deflect each V-Belt about 3/4". Belts will rarely be too tight, but will sometimes be too loose.

To adjust belt tension:

1.Loosen the two bolts that hold the motor/pul- ley assembly to the planer.

2.Insert a wooden lever of suitable strength and pry the motor up to increase belt ten- sion. See Figure 28.

3.Maintain lever position and check belt ten- sion. Re-adjust if necessary.

4.Tighten the bolts and check belt tension again. Repeat steps 1-3 as necessary.

5.Ensure that the pulleys are still in alignment.

Gearbox

The gearbox is located just behind the hand- wheel on the right side of the planer. The gearbox transfers power from the belt-driven cutterhead to the power feed rollers. The two-speed transmis- sion is controlled by a push/pull lever on the right side of the planer. When engaged, the power feed rollers will move lumber through the planer at either 16 or 20 feet-per-minute. The center lever position is neutral.

TO INSPECT THE GEARBOX:

1.Loosen the socket head cap screw on the gearbox cover. Gently pull the cover off the roll pins that hold it in place.

2.Check the bolts holding the sprockets in place. Inspect the drive chains to ensure that the cotter pins are in place. Replace the pins if necessary. See Figure 29.

Loosen these bolts before adjusting belt tension.

Figure 28. Adjusting belt tension.

Figure 29. Location of sprocket bolts.

WARNING

DO NOT make adjustments while the planer is running. Ensure that the switch is off, power is disconnected and moving parts have stopped before making adjustments. Failure to comply could result in serious injury.

-26- G1021 15" Planer