Grizzly MOBILE PLANERS G0453 - Manual (Page 36)

-34- G0453/G0454 (Mfg. Since 3/08)
Motor & Electrical (continued)
symptom possible Cause possible solution
Machine has
vibration or noisy
operation. 8. Motor fan rubbing on fan cover.
9. Bed rollers protruding unevenly.
10. Motor bearings at fault.
11. Cutterhead bearings at fault.
12. Centrifugal switch is at fault.
13. Chip deflector hitting knives.
8. Fix/replace fan cover; replace loose/damaged fan.
9. Adjust bed rollers (
Page 26).
10. test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
11. replace bearing(s)/realign cutterhead.
12. replace switch.
13. Check/replace chip deflector and realign (
Page 43).
Machine Operation
symptom possible Cause possible solution
Excessive snipe
(gouge at the end of
the workpiece that
is uneven with the
rest of the cut).
Note: A small
amount of snipe
is inevitable
with all types of
planers—the key is
to minimize it.
1. one or both of the bed rollers are set too
high.
2. rear extension wing slopes down or is not
level with main table.
3. Chip breaker or pressure bar set too low.
4. Workpiece is not properly supported as it
leaves the planer.
1. lower the bed rollers ( Page 26).
2. Adjust the rear extension wing set screws to make
the extension level with the main table ( Page 18).
3. raise the height of the chip breaker or pressure bar
( Page 40).
4. use an assistant or roller beds/stands to properly
support the workpiece as it leaves the planer.
Workpiece stops/
slows in the middle
of the cut. 1. depth of cut too deep.
2. pitch and glue build-up on planer
components.
3. one or both of the bed rollers are set too
low or too high.
4. Chip breaker or pressure bar set too low.
5. Feed rollers set too low or too high.
1. reduce the depth of cut ( Page 26).
2. Clean planer components with a pitch/resin dissolving
solvent.
3. lower/raise the bed rollers ( Page 26).
4. raise the height of the chip breaker or pressure bar
( Page 40).
5. Adjust the feed rollers to the correct height ( Page
40).
Consistent chipping
pattern. 1. Knots or conflicting grain direction in
workpiece.
2. nicked or chipped knife.
3. Feed rate too fast.
4. depth of cut too deep.
5. Misaligned chip breaker.
1. inspect workpiece for knots and grain direction; use
only clean stock ( Page 24).
2. sharpen/replace knife ( Page 36).
3. reduce feed rate ( Page 25).
4. reduce the depth of cut ( Page 26).
5. Adjust both sides of chip breaker to the correct
height ( Page 40).