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Oliver Machinery
4235 Jointer
Problem
Possible Cause
Possible Solution
Table is loose.
There is play in the
parallelogram
mechanism.
Check the parallelogram mechanism and eliminate
any gaps between the eccentric nut, bracket, and
shafts. Ensure all eccentric nuts are locked by the set
screws, and each set screw is locked by blue Loctite.
Workpiece is caught
on the edge of the
outfeed table.
Outfeed table is set
too high.
Adjust the outfeed table to ensure it is flush with the
cutting arc of the cutterhead.
Uneven wear on
cutter inserts
One section of
cutterhead is used
more than another.
Occasionally adjust fence position so the entire
cutterhead is utilized.
Machine vibrates
excessively or makes
unexpected noise.
Damaged cutter
inserts.
Replace cutter inserts.
Machine stands on an
uneven floor.
Reposition machine on a flat, level surface.
V-belt worn, slipping,
or hitting belt cover.
Clean belt and pulleys. Adjust belt tension. Replace
V-belt if it shows signs of aging.
Improper motor
mounting.
Check and adjust motor mounting.
Loose components.
Tighten fasteners of the component.
Worn bearings.
Contact customer service for assistance.
Operation / Quality-Related Issues
Problem
Possible Cause
Possible Solution
Workpiece came out
twisted.
Improper feeding.
Use the outfeed table as the reference point for
feeding. Apply even pressure and feed rate on
the entire workpiece.
Outfeed table is not in
parallel with the
cutterhead.
Ensure the outfeed table is in parallel with the
cutterhead, and the outfeed/infeed tables are
coplanar.
More passes are
needed.
Significantly twisted boards take multiple passes
to flatten.
Excessive snipe
Outfeed table too low.
Adjust the outfeed table to ensure it is flush with
the cutting arc of the cutterhead.
Too much downward
pressure when feeding
the end of the
workpiece.
Once the workpiece reaches the outfeed table,
use the outfeed table as the reference. Reduce
feeding pressure apply to the workpiece that is
still on the infeed table.
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