The long and short belts are the main components of the drive system responsible for the extruder’s movement. The belts are driven back and forth over the axes pulleys, which allows the extruder to move along its rails during the printing process. If you can see there are visible signs of wear and deformation on the belts in your printer, or if any belt breaks during printer’s operation, follow the steps from this manual to properly replace the damaged belt.
| The following manual shows the M200 repair work. For the M300, these procedures are the same. |
Unplugging the Power Cable
Turn off the printer and unplug the power cable.
Unplugging the Extruder Cable
Unplug the extruder cable.
Unscrewing the Axis Block Covers, part 1
Unscrew one screw that secures the axis block cover on each block.
Unscrewing the Axis Block Covers, part 2
Unscrew the other screw that secures the axis block cover on each block.
Extruder Removal
Remove the extruder along with its guide rails.
Lower Long Belt Replacement
Unscrewing the Belt Tensioners
Unscrew the screw that secures the belt tensioner on the belt to be replaced and remove the belt from the block.
Loosening the Screws on the Self-Aligning Bearings
Loosen the screws on the self-aligning bearings on the axes that hold the lower long belt.
Unscrewing the Self-Aligning Bearing, part 1
Unscrew the self-aligning bearing of the axis that holds the lower long belt to be replaced. Use a wrench or pliers to hold the nuts of the screws.
Unscrewing the Self-Aligning Bearing, part 2
Unscrew the other self-aligning bearing of the axis that holds the lower long belt to be replaced. Use a wrench or pliers to hold the nuts of the screws.
Lower Long Belt Removal
Remove the lower long belt from the axes that hold it.
Lower Long Belt Installation
Put the new lower long belt on the axes that hold it.
Securing the Self-Aligning Bearing, part 1
Secure the self-aligning bearing of the axis that holds the lower long belt.
Securing the Self-Aligning Bearing, part 2
Secure the other self-aligning bearing of the axis that holds the lower long belt.
Tightening the Screws on the Self-Aligning Bearings
Tighten the screws on the self-aligning bearing of the axis that holds the lower long belt.
Short Belt Replacement
Unplugging the Motor Cable
Unplug the motor cable.
Unscrewing the Axis Motor
Unscrew the four screws that secure the motor.
Axis Motor Removal
Remove the distance piece and remove the motor.
Unscrewing the Self-Aligning Bearing
Unscrew the screws that secure the self-aligning bearing next to the short belt.
Short Belt Removal
Remove the short belt from the axis.
Short Belt Installation
Put the new short belt on the axis that holds it.
Securing the Self-Aligning Bearing
Secure the self-aligning bearing of the axis that holds the short belt.
Axis Motor Installation, part 1
Put the other end of the short belt on the motor pulley and install the motor distance piece.
Axis Motor Installation, part 2
Insert the four screws into the holes in the housing and tighten them slightly.
Securing the Axis Motor
Press down the motor by hand to tense up the belt. Tighten the screws while the motor is still being pressed down.
Extruder Installation
Install the extruder with its guide rails.
Securing the Axis Block Covers, part 1
Tighten one screw that secures the axis block cover on each block.
Securing the Axis Block Covers, part 2
Tighten the other screws on top of each axis block.
Securing the Belt Tensioners
Put the belts inside the belt tensioners. Secure each tensioner with the screw.
Tightening the Screws on the Axis Block Covers
Finish tightening the screws on each axis block covers.
Tightening the Self-Aligning Bearing Screws
Tighten the screws that secure the self-aligning bearings on both sides of the housing.
