-34-
Model G0939/G0940 (Mfd. Since 12/20)
Replacing Motor
Brushes
To clean infeed & outfeed rollers:
1. DISCONNECT MACHINE FROM POWER!
2. Raise headstock completely to expose infeed
and outfeed rollers (see
Figure 36).
3. Clean rubber infeed and outfeed rollers with
solvent to remove any pitch or stuck-on
chips.
The motor on the G0939/G0940 is equipped with
two long-life carbon brushes—one on the front
and one on the back of the motor. The brush life is
affected by motor loads and usage. Worn brushes
will result in intermittent operation and difficulty
starting the motor. If either brush is worn down to
1
⁄
4
" (6mm) or less, replace both brushes as a set.
Tools Needed
Qty
Flat Head Screwdriver ....................................... 1
Motor Brushes (PN P0939077) ......................... 2
To check/replace motor brushes:
1. DISCONNECT MACHINE FROM POWER!
2. Unscrew plastic brush covers, and remove
motor brush assemblies (see
Figure 35).
Note: As you remove brush assembly, make
note of carbon tip orientation. If found accept-
able, re-install in same way.
3. Measure length of carbon tip. If carbon tip is
worn down to
1
⁄
4
" (6mm) or less, replace both
brush assemblies with new ones.
4. Insert brush assemblies back into motor, and
re-install plastic caps.
Cleaning Infeed &
Outfeed Rollers
4. Use a vacuum and clean brush to remove
any trapped material from between roller and
headstock.
Figure 36. Cleaning infeed roller.
Saw dust and workpiece grime can accumulate
on the infeed and outfeed rollers, creating incon-
sistent pressure on the workpiece as it is fed
through the cutterhead.
Figure 35. Removing front motor brush.
Brush Assembly
