Grizzly G1005Z Manuale Utente

G1005Z Mill/Drill

-23-

Figure 19. Motor lock screw.

Figure 20. Idler bracket hex bolts.

The belts in the head of the mill/drill must be
rearranged to change speeds. A chart on the belt
cover shows the belt positions needed to make
the mill/drill run at the desired speed.

To change speeds:

1. UNPLUG THE MILL/DRILL!

2. Loosen the motor lock screw (shown in

Figure 19), so the motor is free to pivot.

Changing Speeds

3. Pivot the motor to loosen the belt tension.

4. Loosen, but do not remove, the two idler

bracket hex bolts shown in

Figure 20.

6. Tighten both idler bracket hex bolts.

7. Remove any slack in the motor pulley belt by

shifting the motor back into position.

8. Tighten the motor lock screw.

9. Close the cover before plugging in the

machine.

Figure 21. A-2 pulley combination for 730 RPM.

Spindle

Pulley

Idler

Pulley

Motor

Pulley

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A-2

5. Locate the desired speed on the belt cover

speed chart or on

Page 22 and move the V-

belts to the desired V-grooves on the motor,
idler, and spindle pulleys.

For Example: As indicated in the speed
chart (

Figure 21), a belt combination of A-2

creates 730 RPM.

Note:  Both  belts  may  have  to  be  removed
before certain speed changes can be made.
It  is  normal  for  the  idler  bracket  to  move  in
response to a belt change.