Service manual

5
9) Using a suitable punch rod or
other tool, insert into the
access hole on the right side
of the cart. With a small mallet
or hammer, gently tap the rod
to the left to remove the
bearing axle. Make sure that
the punch is perfectly aligned
with the axle, and that you do
not strike it too forcefully.
10) Remove the axle from the cart,
and the punch tool from the
access hole. You may use a
pair of tweezers, or ideally, a
magnet to remove the bearing
from the space between the
cart and gantry rail. (If you are
removing the lower bearing, it
will fall out once the axle and
tool have been pulled out; don’t
lose it!)
11) You will need to check the bearing by “feel” to determine whether or not it is
defective, since the moving
parts and bearings are sealed
inside and not visible. Hold
the hub of the bearing
between the thumb and
forefinger of one hand, while
rolling the outer ring with the
other hand. If there is any
roughness, sticking, or gritty
feeling when rolling the
bearing back and forth, it will
need to be replaced. A good
bearing will roll very smoothly,
and have an almost “liquid”
feel as it rotates.
Magnet
Bearing