The Dual Belt System
Install the Dual Belt on Original i3
1.1 Remove the original Y axis parts
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Turn the printer sidewise, make sure the printer stay still
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Take off the original Y belt holder and the orignal Y belt from the Y carriage
1.2 Install the new Y-Belt-Holder-A
- Take the Y-Belt-Holder-A and install it to the Y carriage using two M3x10 screws as shown. Make sure you have the correct orientation.
1.3 Assemble the Y tensioner
- Push the nylon nut into the Y tensioner base as shown, there are four of them. Make sure you have the correct orientation!
- Insert the pin into the Y tensioner block about 2/3 as shown and be careful with the plastic, do not break it.
- Put the bearings on the pin as shown. Make sure the bearings have the correct orientation and order.
- Insert the whole pin into the Y tensioner.
- Pass the two belts through the Y tensioner as shown.
- connect the timing belt as shown. Make sure the belts reach the end. Otherwise, the belt length will be different.
- Insert the M3*32mm screw(the longest one) into the Y tensioner.
- Install the timing belt into the Y-Belt-Clip as shown. Put 2 M3x12 screws in advance.
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Put Y Belt Clip into Y Belt Holder B, the upper cover of the Y holder.
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Attach Y Belt Holder B to Y Belt Holder A. Make sure you turn the screws on both sides evenly in turn.
1.4 The final assembly
- Put the Dual belt driving pulley on the Y motor shaft, as close to the motor side as possible, leaving a very small gap only. Make sure the pulley is not touching the motor.
- Put the timing belt around the pulley, let the teeth match the belt
- Install Y tensioner mount to the original position using the original screws.
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Install the adjusting screw(M3x12mm) and leave a proper distance. If the belt does not fully match the driving pulley or the left and right belt does not have the same tension. Just move the Y carriage back and forth when the belt is under tension until the two belts are working properly.
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We will fine tune the belt tension later according to the printing test.