Section 3.3 Assembly of the XZ Unit Mounting the Timing Belt

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	2x Belt Guiding Disc
	1x M4x10 Cylinder Screw
	1x 624ZZ Bearing
	1x GT2 Timing Belt 836mm

• Put the bearing onto the M4 screw with a Belt Guiding Disc on both sides

• Make sure that the little notch of the discs is facing the bearing. The smooth surface is facing outwards.

• Lead the timing belt throught the opening of the X-Idler holder.

• Put the bearing assembly throught the loop

• Pull it back into the X-Idler holder.

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• Push one end of the timing belt into the teeth of the X-Axis

• Lead the remaining long side through the opening underneath the Teeth.

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• Loosen the screws of the X-Motor a little bit, and slide the motor some millimeters in the direction of the X-Carriage.

• Lead the timing belt over the motor pulley

• Lead it back into the direction of the X-Carriage.

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• Push the remaining end of the timing belt into the X-Teeth.

• Set the tension not too tight.

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• Tighten the timing belt by sliding the motor to the right and fix it again with its screws.

  • If the belt moves up and down a little when you move the X-Carriage the belt is too loose

  • If the belt makes sound like a guitar string, it is too tight.

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	1x Z-Endstop Holder
	1x Endstop Cover
	1x Hall-O Endstop
	2x M3x10 Counter Sunk Screw
	2x Torx 3x10 Screw

• Mount the end-stop and with its cover onto the Z-Endstop holder with the Torx screws.

• Mount the Z-Endstop assembly onto the backside of the aluminium frame in the most upper position.

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