To Replace The Carriage Linear Bearings - Foley United ACCU-Pro 670 Assembly And Service Manual

ADJUSTMENT (Continued)

TO REPLACE THE CARRIAGE LINEAR BEARINGS

NOTE: Set a small bench or table near the center
front of the machine for use in the following procedure.
1. Remove the optional carriage bellows (if used) from
the carriage. Remove the actuator release lever from
the linear actuator.
2. Remove the complete carriage assembly from the
machine:
A. Remove the two feed screw guide mounting screws
and pull the grinding head assembly back. Lift the
rubber flap and expose the actuator mounting screw
(FIG. 22) on the top side of the carriage base.
Remove the screw, to disconnect the actuator from
the carriage.
B. Remove the bolts which secure the front and rear
carriage rails to the Grinder base (six screws for
each rail, accessible from beneath the machine).
The carriage assembly weighs
about 50 lbs (23 kg). If necessary,
get help for the following steps.
C. Lift the complete assembly (carriage, carriage
shafts, and grinding head) out onto the table in front
of the Grinder. Be careful you don't damage the
motor cord.
3. Lift the carriage and slide the rails out of the bearings,
one at a time.
4. Remove the three linear bearing pillow blocks (four
screws each) from the bottom of the carriage, and
discard them.
5. One at a time, slide the three new linear bearing pillow
blocks onto a carriage rail.
6. Adjust the tension screw (FIG. 23) on the side of each
bearing block so that when you radially rotate the pil
low block around the carriage (See FIG. 24) rail there
is no free play between the bearing and rail. You should
feel a strong drag.
Repeat this adjustment to all three pillow blocks, and
then remove the pillow blocks from the carriage rail.
NOTE: The tension is too tight if you feel a cogging
action when you rotate a pillow block around the rail. This
cogging is caused by the bearing skidding on the rail.
Rocking the bearing block back and forth should be a
smooth uniform motion.
Bearings which are too tight or too loose will
cause poor grinding quality. Bearings which
are too tight will also have a much shorter life,
and could damage the rail.
Drive Shaft
Seal Plate
Tension
Adjustment
Screw
Radial Rotation
18
Actuator Mounting
Screw (under the rubber
splash guard)
Actuator Bar Assembly
Linear Actuator
Actuator Release Lever
FIG. 22
Carriage