Grizzly G0809, Owner'S Manual

Page: 55 / 72

Model G0809 (Mfd. Since 1/17)
-53-
Adjusting Table
Parallelism (Jointer)
Items Needed Qty
Straightedge 4–8' .............................................. 1
Feeler Gauge Set .............................................. 1
Metal Shims ....................................... As Needed
Figure 78. Checking table parallelism.
Straightedge
Infeed Outfeed
To check/adjust table parallelism:
1. DISCONNECT MACHINE FROM POWER!
2. Move cutterhead guard out of the way.
3. Set outfeed table height as described in
Setting Outfeed Table Height (Jointer).
4. Rotate cutterhead until knife/insert is no
longer at TDC, extend straightedge over
both tables, raise infeed table until it con-
tacts straightedge (see
Figure 78), then lock
infeed table.
Straightedge
Infeed
Outfeed
Insert Feeler Gauge
Where Gap is Greatest
Figure 79. Example of feeler gauge location for
checking table parallelism.
8. Re-check outfeed table height. Refer to
Setting Outfeed Table Height (Jointer),
and re-adjust if necessary.
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.
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). The size of the feeler gauge that fits
in the gap determines the amount that the
table must be shimed
7. Loosen outfeed table lock(s). Place shims
between dovetailed ways, as shown, until
outfeed table is parallel with infeed table at
front and rear of tables.
Figure 80. Typical locations to place shims when
adjusting table parallelism.
Shim Here (Front/
Back) to Raise
Outside Edge of
Table
Shim Here (Front/
Back) to Raise
Inside Edge of
Table