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the front left corner of the machine and the electronics and water lines on the right
side of the machine.
3.
Clean both sides of front X rail where the four white bearings roll.
4.
Hold tissue dampened with alcohol against bearings to clean them (reference Figure 5).
While they move, gently grasp the Y rail of the motion system (reference Figure 4) and
moving it left and right to roll the bearings.
5.
Repeat several times for each bearing to ensure they are clean. If the bearings roll
smoothly, go to Step 10.
6.
There should not be a rough or sticky feel in the bearings when the Y rail is move left and
right. However, a slight unevenness of drag from right to left is normal.
7.
A sticky feel may mean set screws need adjustment. Refer to the "Set Screw Adjustment"
section for procedure.
8.
A bumpy feel means either bearings or rail are still dirty or possibly one of the bearings is
bad. Recheck and reclean bearings and rail.
9.
If after recleaning and adjusting set screws the Y rail still feels bumpy when move left and
right, refer to "Bearing Replacement" section to replace the X axis bearings.
10. At this point the Y axis rail moves smoothly left and right (on the X axis). Hold the Y rail
gently in place (do not apply pressure up or down as damage may occur to the rail or
bearings) and roll the white X bearing with one finger. There should be some friction but
the bearing should be movable with one finger.
11. Check both X bearings. Friction should be about equal.
12. If the friction in either X bearing is excessive or bearings can't be moved, use a Phillips
screw driver and slightly loosen the screw directly under the tight bearing. These adjusting
screws are under the X axis bearing plate and also hold the front X axis belt on the machine
(reference Figure 4).
13. If friction in a white, X axis bearing is too light or if the bearings roll with no drag, use a
Phillips screw driver and slightly tighten the adjusting screws directly under the loose
bearing. These adjusting screws are under the X axis bearing plate and they also hold the
front X axis on the machine (reference Figure 4).
CAUTIO:
Do not tighten the Phillips head screws (under the X axis bearing plate) more then
1/16" turn at a time. If the screws are over tightened, the X bearings will break off
of the plate.