Replacing Brushes - Grizzly G0781 Owner's Manual

Replacing Brushes

This mill/drill is equipped with a universal motor
that uses two carbon brushes to transmit elec-
trical current inside the motor. These brushes
are considered to be regular "wear items" or
"consumables" that will need to be replaced dur-
ing the life of the motor. The frequency of required
replacement is often related to how much the
motor is used and how hard it is pushed.
Replace the carbon brushes (Part #P0781005-2)
when the motor no
power, or when the brushes measure less
than ⁄ " long (new brushes are
1
4
Tools Needed:
Hex Wrench 4mm .............................................. 1
Standard Screwdriver #2 ................................... 1
To inspect and replace motor brushes:
1.
DISCONNECT MACHINE FROM POWER!
2. Remove motor cover by removing two cap
screws (see Figure 42).
Figure 42. Location of motor cover cap screws.
Model G0781 (Mfd. Since 2/15)
longer reaches full
⁄ " long).
5
8
Qty
Motor Cover
Cap Screws
3. Unscrew one of the brush caps (see
Figure 43).
Brush Cap
Figure 43. Removing motor brush cap.
4. Remove old brush assembly. If brush is
worn down to less than
a new one. Otherwise, re-install old brush
(see Figure 44).
Brush
Assembly
Figure 44. Inserting new motor brush.
5.
Replace brush cap to secure brush.
6. Repeat Steps 3–5 for second brush assem-
bly on other side of motor.
7.
Replace motor cover.
Note: Run mill/drill at a medium spindle
speed setting for a minimum of five minutes
before performing any workpiece operations.
⁄ '', replace it with
1
4
-35-