Prepare belt tensioner assembly (K1) and
3mm Allen key.
Rotate the X-axis assembly
180
°
horizontally.
Pick up the belt tensioner assembly (K1).
Loosen the T-nut by hand until it is at the end of
the threads, but not so far it might fall off. Then, fit
into the slot in the aluminum profile. When the
bolt is tightened, the nut rotates 90 degrees and
then grasps the inside of the slot.
Align the T-nut with the top aluminum
profile groove. Use an Allen key to tighten the
screw. Be careful not to tighten it all the way. Make
sure that the external actuator assembly (K1) can
be slid easily.
Align the belt so that one end fits over the
geared pulley in the extrusion unit (E) and one end
fits over the idler in the belt tensioning assembly
(K1). Apply tension in the direction of the red
arrow to the left and use an Allen key as a lever to
push the belt around the pulley. Tighten the belt
and then tighten the two screws.
Check the tension of the belt driving the X-
axis (on the gantry). The belt should be taut, with
no slack or slop.
8