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4.9.2 Y AXIS BEARIG ADJUSTMET
1.
Turn system power off.
2.
Remove top enclosure is not already removed.
a.
To remove the top cover, unclasp the four latches that hold the top cover down. Two
latches can be found on the right side of the machine and two can be found on the left
side of the machine.
b.
Ensure power cord is removed then gently lift cover up and off of the machine. This
will require two people to accomplish. Watch out for the one inch mirror in 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 the Y axis rail in bearing channels with a cotton swab and alcohol
(reference Figure 9).
4.
Clean the two Y bearings (reference Figure 9) using a tissue and alcohol. Dampen tissue
and hold over carriage while moving the final focus lens carriage front to back. Repeat
several times to ensure they are clean.
5.
Clean Y eccentric bearing (reference Figure 9) using cotton swab and alcohol. Dampen
cotton swab and hold against bearing while moving carriage front to rear and rotating
cotton swab at the same time.
6.
When bearings and the two channels are clean, gently grasp carriage across lens holder and
move back and forth. Movement should be smooth and not feel bumpy or sticky. If
smooth, go to Step 7. A bumpy movement means either the bearings or channel are still
dirty or a bearing may be bad. Recheck and reclean bearings and channel. Some slight
unevenness of drag from front to back is normal. A sticky feel means the four nylon tipped
set screws on bottom of final focus lens carriage need adjusting. Refer to "Set Screw
Adjustment" section.
7.
If after cleaning bearings and adjusting the set screws and the final focus lens carriage
movement is still bumpy, refer to the "Y Axis Bearing Replacement" section.
8.
When Y axis carriage is moving smoothly, hold carriage in middle of Y axis with right
hand (do not apply pressure up or down on carriage) and with left hand rotate both Y
bearings on the left side of the rail. These should roll smoothly using one finger, but
should also have some friction.
9.
If friction in the Y axis bearings is excessive or bearing can't be moved:
a.
Place 7mm socket over eccentric bearing (reference Figure 9).
