Checking/Adjusting Table Parallelism - Grizzly G0855 Owner's Manual

Checking/Adjusting
Table Parallelism
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:
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.
Straightedge
Outfeed
Figure 60. Checking table parallelism.
Model G0855/G0856 (Mfd. Since 02/19)
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
— If there are gaps anywhere between one
6.
Insert feeler gauge between table and
straightedge where gap is greatest (see
Figure 61). Maximum allowable tolerance is
0.003".
Qty
Outfeed
Figure 61. Example of feeler gauge location for
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.
Figure 62. Locations to place shims when
Infeed
8. Re-check outfeed table height (refer to
Setting Outfeed Table Height on Page 48),
and re-adjust if necessary.
makes full contact with both tables at front
and rear, the tables are parallel with each
other and no adjustments are necessary.
of the tables and the straightedge, the
tables are not parallel to each other and
must be adjusted. Proceed to Step 6.
Insert Feeler Gauge
Where Gap is Greatest
checking table parallelism.
Possible Shim
Locations
adjusting table parallelism.
Straightedge
Infeed
-47-