18
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.
ADJUSTMENT (Continued)
FIG. 22
Actuator Mounting
Screw (under the rubber
splash guard)
Drive Shaft
Linear Actuator
Seal Plate
Actuator Release Lever
Actuator Bar Assembly
Radial Rotation
Carriage
Tension
Adjustment
Screw
Summary of Contents for ACCU-Pro 670
Page 34: ...34 ELECTRIC SCHEMATIC 67095233...
Page 35: ...35 This Page Left Intentionally Blank for Note Taking Purposes...
Page 36: ...36 PARTS LIST 6709528 MAIN BASE ASSEMBLY...
Page 38: ...38 PARTS LIST Continued 6709529 GRINDING HEAD ASSEMBLY...
Page 40: ...40 PARTS LIST Continued 6709520 TRAVERSE CARRIAGE ASSEMBLY...
Page 42: ...42 PARTS LIST Continued 6709524 BEDKNIFE SUPPORT ASSEMBLY...
Page 44: ...44 PARTS LIST Continued 6709523 CONTROL PANEL ASSEMBLY 50 51...
Page 46: ...46 PARTS LIST Continued 6709523 ELECTRICAL ASSEMBLY...
Page 48: ...48 PARTS LIST Continued 7469909 COOLANT PUMP TANK ASSEMBLY 15...
Page 50: ...50...