Service manual

6
12) To replace the bearing, re-
insert it into position with the
magnet tool, and align it as
closely as possible with the
axle hole. Insert the axle
back into the hole and
through the bearing hub.
Push the axle completely
into the hole until it is nearly
flush with the cart surface.
13) Insert the long end of a 5mm
Allen wrench into the end of
the eccentric axle, and turn
clockwise until it is “snug”. DO
NOT over-tighten the
eccentric axle, as this may
damage the bearing, axle, or
even the bearing cart casting.
While holding tension on the
5mm wrench, tighten the 2mm
locking set screw which
corresponds to the axle. Apply
adequate torque to tighten the
screw fully, without stripping
the screw hole. A small
amount of Loctite or other
thread-locking compound may
be applied to the set screw
threads prior to tightening.
14) Rear bearings: Removal of the rear Y-axis cart bearings is similar, but with no
eccentric axle adjustment, making re-assembly easier. Visual access to the locking
set screws is however more difficult. Make certain that the bearing axle is fully re-
inserted into the hole before tightening the locking set screw. The flat head of the
axle will be nearly flush with the bearing cart casting when inserted properly.
15) Before replacing the felt pad holders, clean or trim off the dirty ends of each pad, and
lubricate by soaking them with a light oil (i.e. “3 in 1” oil). Use care not to lose the
small compression spring behind each pad. Make sure that the pads are correctly
aligned with the bearing tracks after re-assembly.
16) Replace the Y-axis magnet bracket carefully, using the pencil line to aid in
alignment. Do not over tighten the mounting screw, as the threaded hole in the
plastic pad holder will easily strip. Make a test cut to check the accuracy of the Y-
border, and make any needed adjustments in Advanced Settings > Home Y Axis.