Service manual

11) Remove the main drive belt from the Y-gantry by pulling it through both top and

bottom reversing units.

12) Insert the replacement belt into the

lower reversing unit a few inches.

Guide the belt around the

reversing unit toothed pulley with a

metal ruler or small screwdriver.

When you have successfully

routed the belt around the lower

reversing unit, continue to feed the

belt up through the channel inside

the Y-gantry extrusion beam.

13) When the end of the belt reaches

the upper reversing unit, use the

ruler or screwdriver to bend it

through and around the toothed

pulley in the same manner.

Note: You may need to remove the upper reversing unit from the top of the Y-gantry

beam in order to thread the belt through it. Loosen and remove both recessed universal

fastener bolts from the top end of the gantry with a 5mm Allen wrench. Carefully support

the weight of the Y-axis motor and lift the reversing unit off the Y-gantry.

You may also feed the belt into the top reversing unit first, and remove the lower unit

from the gantry instead.

Remover recessed

fasteners with ball-end

5mm Allen wrench