Service manual

Replacing Top X-axis Bearing Cart

1) Turn off power to the machine. You may also lower the machine down on its stand to

allow easier access to the top of the Y-gantry and top X-axis bearing cart. Refer to

instructions for lowering the F-6100 in the “Moving the F-6100” section. Otherwise, a

step ladder or stable step-stool will be required for much of this procedure.

2) Remove the Y-axis motor housing from the top of the Y-gantry. A 5/16” wrench or

1/8” Allen wrench will be required to remove the four fasteners, depending on the

age/ serial # of your machine.

3) Unplug the Y-motor cable plug from the top rear of the gantry area. Loosen and

remove the motor cable mounting bracket by removing the 5mm Allen bolt. Remove

the other 5mm Allen bolt from the top plate as well. Remove the 2 nylon bushings

from underneath the plate, and store them with the bolts for re-assembly later.

4) Move the Y-gantry to the approximate

center of the frame manually. Using

two 90-degree angle brackets, bolts,

and T-nuts, fix the lower bearing cart

to the bottom frame extrusion, as

shown. (5mm Allen wrench required)

Make sure that the bearing cart is

completely immobilized by the

brackets in both directions (left-to-

right)

Remove two 5mm bolts

and nylon bushings