Model G0855/G0856 (Mfd. Since 02/19)
-47-
Checking/Adjusting
Table Parallelism
The infeed and outfeed tables must be parallel
with each other in order to produce a straight,
jointed edge. When the tables are not parallel with
each other, the jointer will produce workpieces
that are cupped (concave) or bowed (convex)
along their length.
Table parallelism is factory-set and should not
normally need to be adjusted when the machine
is new. However, after prolonged use, or if the
machine has been jarred during lifting or trans-
portation, it may become necessary to adjust the
table parallelism.
Table parallelism is adjusted by inserting shims
between the dovetailed ways of the outfeed table
to make it parallel with the infeed table. Once
this adjustment is made, the outfeed table height
should not need to be adjusted again.
Item(s) Needed: Qty
Precision Straightedge 3' .................................. 1
Feeler Gauge Set .............................................. 1
Metal Shims ....................................... As Needed
To check/adjust table parallelism:
1. DISCONNECT MACHINE FROM POWER!
2. Set outfeed table height (refer to Setting
Outfeed Table Height on Page 48).
3. Move cutterhead guard out of the way and
slide fence all the way back.
4. Rotate cutterhead until knife/insert is not at
TDC, extend straightedge over both tables,
raise infeed table until it contacts straight-
edge (see
Figure 60), then lock infeed table.
5. Look down length of straightedge on outfeed
side to see if there are any noticeable gaps
between straightedge and outfeed table. Do
this at both front and rear of table.
— If there are no gaps, and the straightedge
makes full contact with both tables at front
and rear, the tables are parallel with each
other and no adjustments are necessary.
— If there are gaps anywhere between one
of the tables and the straightedge, the
tables are not parallel to each other and
must be adjusted. Proceed to
Step 6.
6. Insert feeler gauge between table and
straightedge where gap is greatest (see
Figure 61). Maximum allowable tolerance is
0.003".
Figure 60. Checking table parallelism.
Straightedge
Infeed
Outfeed
Straightedge
Infeed
Outfeed
Insert Feeler Gauge
Where Gap is Greatest
Figure 61. Example of feeler gauge location for
checking table parallelism.
7. Loosen outfeed table locks. Place shims
between dovetailed ways (see
Figure 62)
until outfeed table is within 0.003" of parallel
with infeed table at front and rear of tables.
8. Re-check outfeed table height (refer to
Setting Outfeed Table Height on Page 48),
and re-adjust if necessary.
Figure 62. Locations to place shims when
adjusting table parallelism.
Possible Shim
Locations
Checking Adjusting Table Parallelism
