GRAPHTEC FC 4500 Series Service Manual page 78

(12) Remove the two Cap screws holding the Front X Belt Stopper plates, and then detach the Front X
Belt from the Front X Slider.
(13) Put the some spacer under the Y bar to keep height of the front of Y bar.
The Rear X Slider Roller and Rear X rail will be damaged when the Y bar height was not kept.
(14) Remove the two M4L8 cap screws holding the front of Y bar and the Front X slider.
(15) Slide out the Front X slider from the front of Y bar.
(16) Loosen the three M3L4 TP head screws holding the Front horizontal Tension Plate. Do not loosen
the M4L10 screw which is holding the Center Roller.
Front X Rail
M3L4 TP head screw
(17) Detach the Front X Slider from the Front X Rail.
FC4500-UM-251-9370
Put the some spacer to keep the Y bar height.
Front X Slider
Front X Slider
Front Horizontal Tension Plate
M4L8 cap screw
Do not loosen this M4L10 TP
head screw.
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6 REPLACEMENT PROCEDURES