D-2
MAINTENANCE
D-2
5. With the control box and carriage out of the way,
access to the track fasteners
Item 12
can be
gained.
6. Inspect the four "V" bearings on the carriage to veri-
fy that they rotate freely and are not excessively
worn.
7.
Note: Do not loosen the hex nuts holding the
gear motor in place – the gear motor has been
factory set to give proper clearance between the
rack and pinion
8. Remove the eight hex head screws
Item 12
holding
the top and bottom tracks in place and remove the
tracks.
9. Install new tracks, or switch the tracks, on the track
support
Item 13
ensuring that the tracks are seated
firmly on the edges of the track support.
10. Reassemble all parts except for the top and bot-
tom track shields and proximity sensor bracket.
11. To adjust the eccentric nuts on the bottom "V"
bearings, tighten the 1/2-13 screws until snug.
12. Rotate the eccentric nuts to bring the bottom bear-
ings snug against the track.
13. While holding the eccentric nuts securely, tighten
the 1/2-13 screws.
14.
Verify proper pressure by turning outer race of
bottom bearings by hand. They must slip on
track, but there must be no vertical play in the
carriage assembly.
Readjust eccentric nuts, if
necessary.
15. Lubricate tracks and bearings and install top and
bottom track shields and proximity sensor bracket.
CONTROL BOX
Every six months inspect the control box. If needed,
blow dirt out using low pressure air. Replace screw
holding door closed.
CALIBRATION SPECIFICATION
All calibration is factory set on the Spreadarc.
SPREADARC
