-60-
For Machines Mfd. Since 3/21
South Bend Tools
Model SB1119/SB1120
TROUBLESHOOTING
Chipping.
1.
Cutting against grain of wood.
1.
Cut with grain of wood.
2.
Nicked or chipped cutter.
2.
Replace cutter, or have it professionally sharpened.
3.
Feeding workpiece too fast.
3.
Decrease feed rate.
4.
Taking too deep of cut.
4.
Make several passes of light cuts. (Always reduce
cutting depth when working with hard woods.)
5.
Knots in wood.
5.
Inspect workpiece (Page 25); use a different
workpiece if necessary.
Fuzzy grain.
1.
Wood may have high moisture
content or surface wetness.
1.
Check moisture content and allow to dry if moisture
is more than 20% (Page 25).
2.
Dull cutter.
2.
Replace cutter, or have it professionally sharpened.
Excessive snipe
(gouge in end
of board that is
uneven with rest
of cut).
1.
Fence not adjusted correctly.
1.
Adjust fence to support workpiece as it passes
cutterhead (Page 31). Align fence boards with
straightedge, verify parallelism (Page 53).
2.
Incorrect workpiece pressure
against fence and/or rub collar.
2.
Apply constant, even pressure to workpiece
throughout cut and use featherboards/power feeder.
Workpiece pulls
forward/ejects from
operator's hands.
1.
Feeding workpiece in same
direction as cutterhead rotation.
1.
Reverse direction of cutter rotation (Page 26)/
reverse feed direction.
Symptom
Possible Cause
Possible Solution
Workpiece hits
outfeed fence.
1.
Fence not adjusted correctly.
1.
Adjust fence to support workpiece as it passes
cutterhead (Page 31). Align fence boards with
straightedge, verify parallelism (Page 53).
Workpiece kicks
back toward
operator.
1.
Taking too deep of cut.
1.
Make several passes of light cuts. (Always reduce
cutting depth when working with hard woods.)
2.
Workpiece is warped, rough, has
high moisture content, or loose/
large knots.
2.
Inspect workpiece (Page 25); only use smooth, dry
stock without loose/large knots.
3.
Workpiece pinched between cutter
and table or cutter and guard.
3.
Ensure proper clearance between cutter, guard, and
table.
Workpiece is
burned when cut.
1.
Dull cutter.
1.
Replace cutter, or have it professionally sharpened.
2.
Too slow of feed rate.
2.
Increase feed speed.
3.
Pitch build-up on cutter.
3.
Clean cutter with blade and bit cleaning solution.
4.
Feeding workpiece in same
direction as cutterhead rotation.
4.
Reverse direction of cutter rotation (Page 26)/
reverse feed direction.
5.
Taking too deep of cut.
5.
Make several passes of light cuts. (Always reduce
cutting depth when working with hard woods.)
Divots in edge of
cut.
1.
Inconsistent feed speed.
1.
Move smoothly or use a power feeder.
2.
Inconsistent workpiece pressure
against fence and/or rub collar.
2.
Apply constant, even pressure to workpiece
throughout cut and use featherboards/power feeder.
3.
Fence not adjusted correctly.
3.
Adjust fence (Page 31).
Machine has
vibration or noisy
operation. (Cont.)
6.
Pulley loose.
6.
Secure pulley on shaft.
7.
Motor mount loose/broken.
7.
Tighten/replace.
8.
Workpiece loose.
8.
Use correct holding fixture; support workpiece.
9.
Motor fan rubbing on fan cover.
9.
Fix/replace fan cover; replace loose/damaged fan.
10.
Motor bearings at fault.
10.
Test by rotating shaft; rotational grinding/loose
shaft requires bearing replacement.