Jet JPJ-12B Operating Instructions And Parts Manual page 12

3. Slide the fence assembly (B) back (C) as far
as it will go, or remove it from the machine
entirely (use a 5mm hex wrench to remove
the four button head socket screws and then
remove the fence assembly).
4. Loosen the outfeed table lock handle (C, Fig.
7) on the outfeed table (A). Use the outfeed
table adjustment handle (B, Fig. 7) to raise
the outfeed table higher than the cutterhead.
5. Place a straight edge (D) across the back of
the outfeed table (A) and extending over the
infeed table (E). Note the position of the
infeed table. Note the position of the straight
edge in Figure 10 with respect to the fence
(B).
6. Raise the infeed table (A) until it contacts the
straight edge (D).
The straight edge should lie level across both
tables. Move the straight edge to the front of the
outfeed table as shown in Figure 11 and perform
the same test.
If the straight edge does not lie level, the front or
back of one of the tables must be adjusted to
make the tables coplanar. Proceed as described
in Performing the Coplanar Alignment below.
Figure 10
Figure 11
Performing the Coplanar Alignment
Refer to Figure 12:
If alignment is needed as determined in the
previous section, proceed with step 7. A 2.5mm
hex wrench and a 22mm open wrench is
required.
7. Each table has four adjustment cams; two in
front (A) and two in back (D). A small hole
with a set screw (C) inside is near each cam.
Note: The two cams at the front of each table are
concealed by the front cover (B). The front cams
furthest from the cutterhead can be accessed
from below the cover, when the jointer table is
raised and the machine is in the planer orientation
(see sect. 9.1, Jointer to Planer Setup). If
adjusting one of the front cams closest to the
cutterhead, the front cover must first be removed
to access the set screw. Use a cross-head
screwdriver to remove the infeed table scale
pointer, turn the infeed table lock handle (D, Fig.
7) and outfeed table lock handle (C, Fig. 7)
counterclockwise to remove them, and use a
5mm hex wrench to remove the four flat head
socket screws along the top of the front cover;
then remove the front cover.
Note: One cam at the back of each table is
obscured by the jointer fence assembly. The
cams can be accessed by removing the fence
assembly, which can be done after removing four
button head socket screws (B, Fig. 17) with a
5mm hex wrench.
8. Near the point of the table where the
adjustment must be made, use a 2.5mm hex
wrench to loosen the set screw (C) by turning
it counterclockwise.
9. Turn the associated cam (A or D) with a
22mm open wrench. This adjustment is
sensitive and should be made in small
increments.
Note: There is a notch on the cam that marks the
alignment of the cam's eccentricity. There is a
positive correlation between the mark and the
infeed/outfeed table adjustment. When the cam is
adjusted with the mark rotated upward, the
corresponding area of the table is raised;
conversely, when the mark is rotated downward,
that part of the table is lowered.
10. Use the straight edge (D, Fig. 10 and 11)
upon the tables to check the adjustment until
the tables are coplanar.
11. When the adjustment is satisfactory and the
tables now coplanar, tighten the set screw
(C) with the 2.5mm hex wrench.
12