Checking/Adjusting Table Parallelism - Grizzly G0813 Owner's Manual

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 workpiec-
es 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
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.
Items Needed
Straightedge 4–8' .............................................. 1
Feeler Gauge Set .............................................. 1
Metal Shims ....................................... As Needed
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.
4.
Rotate cutterhead until knife/insert is no lon-
ger at TDC, extend straightedge over both
tables, raise infeed table until it contacts
straightedge (see Figure), then lock infeed
table.
Straightedge
Outfeed
Figure 88. Checking table parallelism.
Model G0813/G0814 (Mfd. Since 3/16)
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). Maximum allowable tolerance is
0.003".
Qty
Outfeed
Figure 89. Example of feeler gauge location for
7.
Loosen outfeed table lock(s). Place shims
between dovetailed ways, as shown, until
outfeed table is within 0.003" of parallel with
infeed table at front and rear of tables.
Figure 90. Typical locations to place shims when
Infeed
8. Re-check outfeed table height (refer to
Setting Outfeed Table Height), and re-ad-
just if necessary.
Insert Feeler Gauge
Where Gap is Greatest
Straightedge
checking table parallelism.
Possible Shim
Locations
adjusting table parallelism.
Infeed
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