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Model G0923 (Mfd. Since 05/20)
Aligning Axis Pulleys
The X and Y axes are driven by timing belts that
run along the axis rails, between the drive and
idler pulleys. If the pulleys are out of alignment or
loose, the axes will not travel properly, resulting in
skewed print results. Adjusting the drive pulleys is
normally sufficient to resolve these issues.
Accessing X-Axis Drive Pulley
1. Remove front motor cover (see Figure 63).
Adjusting Drive Pulleys
The drive pulleys are secured to the stepper
motor shaft by (2) set screws (see
Figure 65).
Set screws must be snug to prevent pulley from
slipping on the shaft. Drive pulleys must be posi-
tioned laterally so that the timing belt does not rub
on either side of the axis rail.
Figure 65. Drive pulley, belt, and axis rail.
Set
Screws
Timing Belt
Centered
in Axis Rail
Drive
Pulley
To adjust drive pulley:
1. Loosen (2) set screws until drive pulley is
loose on shaft (see
Figure 65).
2. Position drive pulley so that timing belt is cen-
tered on axis rail (see
Figure 65).
3. Tighten (2) set screws (see Figure 65).
2. Remove Y-axis rail and stepper assembly
from underside of cover.
Note: Stepper motor 6-pin connector can be
disconnected to fully remove the assembly
from the printer.
Accessing Y-Axis Drive Pulley
Tools Needed
Qty
Hex Wrench 2.5mm ........................................... 1
Phillips Head Screwdriver .................................. 1
To access Y-axis drive pulley:
1. Remove (7) tap screws, (2) Phillips head
screws, and (3) button head cap screws from
bottom of base plate (see
Figure 64).
Figure 64. Underside of base plate.
Figure 63. Front motor cover.
Front Motor
Cover
Summary of Contents for G0923
Page 56: ......
