South Bend Tools
For Machines Mfd. Since 10/20
Model SB1091
-35-
TROUBLESHOOTING
Machine has
excessive
vibration or noise
(continued).
6.
Machine is incorrectly mounted or
sits unevenly.
6.
Tighten/replace anchor studs in floor; relocate/shim
machine.
7.
Motor fan is rubbing on fan cover.
7.
Replace dented fan cover; replace loose/damaged
fan.
8.
Motor bearings are at fault.
8.
Test by rotating shaft; rotational grinding/loose
shaft requires bearing replacement.
9.
Cutterhead bearings at fault.
9.
Replace bearing(s)/re-align cutterhead.
Chipping.
1.
Knots or conflicting grain direction
in wood.
1.
Inspect workpiece for knots and grain (Page 23);
only use clean stock.
2.
Nicked or chipped insert.
2.
Rotate insert to expose sharp edge; replace insert
(Page 39).
3.
Feeding workpiece too fast.
3.
Slow down the feed rate.
4.
Taking too deep of a cut.
4.
Take a smaller depth of cut. (Always reduce cutting
depth when surface planing or working with hard
woods.)
Board edge is
concave or convex
after jointing.
1.
Board not held with even pressure
on infeed and outfeed table during
cut.
1.
Hold board with even pressure as it moves over the
cutterhead.
2.
Board started too uneven.
2.
Take partial cuts to remove the extreme high spots
before doing a full pass.
3.
Board has excessive bow or twist
along its length.
3.
Surface plane one face so there is a good surface to
position against the fence.
4.
Insufficient number of passes.
4.
It may take 3 to 5 passes to achieve a perfect edge,
depending on the starting condition of the board
and the depth of cut.
Workpiece stops in
the middle of the
cut.
1.
Outfeed table is set too high.
1.
Align outfeed table with cutterhead insert at top
dead center (Page 41).
Long lines or ridges
that run along the
length of the board.
1.
Nicked or chipped insert.
1.
Rotate insert to expose sharp edge; replace insert
(Page 39).
Uneven insert
marks, wavy
surface, chatter
marks across board
face.
1.
Feeding workpiece too fast.
1.
Slow down the feed rate.
Fuzzy Grain.
1.
Wood may have high moisture
content or surface wetness.
1.
Check moisture content and allow to dry if moisture
is too high.
2.
Dull inserts.
2.
Replace inserts (Page 39).
Tables are hard to
adjust.
1.
Table lock is engaged or partially
engaged.
1.
Completely loosen the table lock.
2.
Table stops blocking movement.
2.
Loosen/reset table positive stops.
Excessive snipe
(gouge in the end
of the board that
is uneven with the
rest of the cut).
1.
Outfeed table is set too low.
1.
Align outfeed table with cutterhead insert at top
dead center (Page 41).
2.
Operator pushing down on end of
workpiece.
2.
Reduce/eliminate downward pressure on that end of
workpiece.
Symptom
Possible Cause
Possible Solution
Содержание SB1091
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