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ADJUSTMENTS
TO
COMPENSATE
FOR
WEAR
Even though the finest materials and precision workman-
ship have been used to minimize wear, after long use it
is reasonable to expect some wear. Adjustments have been
built into the Craftsman saw to reduce or eliminate this wear.
REMOVING
RADIAL
ARM
SIDE
PLAY
1. Set the radial
arm at 0° index position, making sure
the arm latch handle is in the detent notch, and tighten
the arm lock handle. (See figure 25.)
2. Apply
side force with one hand on radial arm in both
directions. If side play exists, an adjustment is required.
3. Loosen two
locking screws, insert a 3/16-inch
Hex-L
wrench into the socket-head
set-screw that adjusts the
column tube wedge key, as shown in figure 25. Rotate
the set-screw slowly in (clockwise) until no side play can
be felt in radial arm.
4. Check for binding by rotating the elevation crank. If the
crank rotates with noticeable
resistance, loosen the set-
screw by rotating
the Hex-L wrench counterclockwise
until rotation is normal. An effective method for finaliz-
ing the set-screw adjustment is to rotate the screw while
the elevation
crank is being rotated, checking for side
play in radial
arm as the adjustment
progresses. The
adjustment
is correct when all side play of radial arm
is eliminated
and only very slight additional
resistance
can be felt when rotating the elevation
crank.
5. If some radial arm side play can still be detected after
performing
the above adjustment,
it will be necessary
to adjust the forward
five screws through
the right-,
and left-hand
column supports as follows:
a. While rotating the elevation
crank, tighten the five
column adjusting screws slightly at the forward edge
of column supports. Each screw should be tightened
only slightly, and each one the same amount, until
a slight resistance can be felt when rotating
the
elevation
crank, then each backed off just enough
to restore a normal feel to the elevation
crank.
b. Recheck the adjustment
of the column tube wedge
key set-screw as outlined
in preceding
instructions.
6. After all adjustments have been completed, recheck the
radial arm for absence of side play.
7. When side play is eliminated,
tighten the column key
locking screws.
YOKE
CLAMP
ARM
ADJUSTMENT
The normal locking position of the yoke clamp arm (1, figure
23) is parallel with the radial arm. An adjustment will seldom
be necessary; however, it may be accomplished as follows:
1. Loosen the carriage lock knob (4, figure 23), move the
carriage out to the forward end of radial arm and tighten
carriage
lock knob.
2. Locate the yoke clamp stud locking screw at the rear of
the yoke assembly. (See figure 26.)
3. Turn the locking screw outward
at least 1/4-inch
from
tight position. This frees the index plate (figure 26/which
is keyed to the yoke clamp stud, thus permitting the stud
to be rotated when the yoke clamp arm is loosened.
4. Loosen the yoke clamp arm and, with pliers lightly grip-
ping the head of the yoke clamp stud, rotate the stud
a small fraction of a turn (clockwise when viewed from
bottom!, then tighten the yoke clamp arm.
5. If the yoke clamp arm still does not line up parallel to
the radial arm, loosen it and again move the yoke clamp
stud. Continue this operation
until the yoke clamp arm
is properly
aligned
when tightened.
6. Rotate the lacking screw back into position to secure
the adjustment by preventing
movement of index plate.
NOTE: It may be necessary to loosen the yoke
clamp arm so that end of locking screw can
enter a notch of the index plate. This would
alter the arm adjustment slightly but not enough
to be of any consequence.
CARRIAGE
BEARING
ADJUSTMENT
To test for looseness in the carriage,
firmly grasp the car-
riage
across the two carriage
covers and apply
a firm
rocking motion. Noticeable
looseness may be adjusted
as
follows:
1. Remove
the left-hand
carriage
cover
by
removing
two
attaching
screws.
2. Loosen
the yoke
clamp
arm
(figure
27),
lift
up on the
swivel
latch pin knob and rotate
the yoke approximately
45 ° counterclockwise
(when
viewed
from above)
to posi-
tion the cutout
portion
of the yoke
below
the rear
car-
riage
bearing,
thus
providing
room
for the wrench
on
the nut.
3. Working
on the rear bearing (figure 27), loosen the nut
just enough to permit the eccentric screw to turn and
rotate it a partial turn (left or right) as required to take
up all looseness. Hold the eccentric screw and tighten
the nut. The adjustment is correct when there is no "'play'"
between the carriage and radial
arm, yet the carriage
moves relatively
free on the tracks.
ARM
ASS¥.
11
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