2. Multiplexer assembly

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1 2. Multiplexer assembly Written By: Josef Prusa 2017 manual.prusa3d.com Page 1 of 12

2 Step 1 Prepare the parts Take the bags labeled as "2. Multiplexer" Step 2 Parts identification Y-splitter Extruder-adaptor-MM 2017 manual.prusa3d.com Page 2 of 12

3 Step 3 Insert nut Insert M3n nut inte the Extruder-adaptor-MM pritned part all the way down Step 4 Insert nut Insert M3n nut inte the Extruder-adaptor-MM pritned part all the way down 2017 manual.prusa3d.com Page 3 of 12

Step 5 Insert nuts Insert M3nS nuts into the slots as shown in the picture Step 6 Replace PTFE Place the nozzle into the Extruder-adaptor-MM part Push the black ring all the way

4 Step 5 Insert nuts Insert M3nS nuts into the slots as shown in the picture Step 6 Replace PTFE Place the nozzle into the Extruder-adaptor-MM part Push the black ring all the way down into the nozzle and hold it in place Pull out the PTFE tube from the nozzle Insert new PTFE tube ( PTFE-4x41 ) all the way down into the nozzle 2017 manual.prusa3d.com Page 4 of 12

way out as shown in the picture Make sure that the end of PTFE

5 Step 7 Secure the PTFE Push the PTFE all the way into the nozzle and keep pushing Pull out the black secure ring all the way out as shown in the picture Make sure that the end of PTFE with bore is not inside the nozzle 2017 manual.prusa3d.com Page 5 of 12

6 Step 8 Mount the cover Place the cover onto the Extruder-adaptor-MM Check that you have correct lengths of screws in place M3x18 M3x25 Tighten both screws 2017 manual.prusa3d.com Page 6 of 12

the nozzle fan onto the extruder as shown in the picture Step 10 Mount the print fan Using M3x20

7 Step 9 Mount the nozzle fan M3x18 screws (4pcs) Note the correct orientation of the fan. The cable should face up and the sticker should face towards the nozzle Using M3x18 screws mount the nozzle fan onto the extruder as shown in the picture Step 10 Mount the print fan Using M3x20 screws mount the print fan onto the cover as shown in the picture 2017 manual.prusa3d.com Page 7 of 12

Step 11 Mount the P.I.N.D.A. probe Slide the P.I.N.D.A. probe into the Extruder-adaptor-MM part as shown in the picture Note the loop on the cables Screw on the M8x1 nut onto the P.I.N.D.A probe Note the position of the P.

8 Step 11 Mount the P.I.N.D.A. probe Slide the P.I.N.D.A. probe into the Extruder-adaptor-MM part as shown in the picture Note the loop on the cables Screw on the M8x1 nut onto the P.I.N.D.A probe Note the position of the P.I.N.D.A probe. The end of the probe should be aligned with the end of the hook on the part Tighten the M8x1 nut 2017 manual.prusa3d.com Page 8 of 12

9 Step 12 Insert nuts Insert M3nS nuts all the way into the slots in Extruder-adaptor-MM Step 13 Mount the Y-splitter Slide the Y-splitter into the Extruder-adaptor-MM as shown in the picture Screw the M3x30 screws to secure the Y-splitter in place 2017 manual.prusa3d.com Page 9 of 12

Step 14 Place the tubes in Y-splitter Push the 25x3x1.

Step 15 Mount the extruder onto the printer Place the extruder assembly onto the

A and print fan cables has to go together through left slot.

10 Step 14 Place the tubes in Y-splitter Push the 25x3x1.9t tube all the way into the Y-splitter as shown in the picture. Step 15 Mount the extruder onto the printer Place the extruder assembly onto the printer Note the cable arrangement as highlighted in the picture. The P.I.N.D.A and print fan cables has to go together through left slot. The nozzle fan cables has to go through right M3x10 screw M3x30 screw M3x18 screw Tighten the screws to secure the extruder in place 2017 manual.prusa3d.com Page 10 of 12

Step 16 Cable management Slide the ziptie through the left X-carriage slot

ziptie through the right slot in X-carriage Make sure that all the cables

probe and print fan cables has to go in the left slot and under the zipte.

The nozzle cables has to go in bottom slot and has to be inside the ziptie

Step 17 Assembe the spiral wrap Wrap the spiral wrap around all wires going

11 Step 16 Cable management Slide the ziptie through the left X-carriage slot as shown in the picture Guide the ziptie under the nozzle cables Guide the ziptie through the right slot in X-carriage Make sure that all the cables are in correct position. The P.I.N.D.A. probe and print fan cables has to go in the left slot and under the zipte. The nozzle fan cable has to go in the right slot and under the ziptie. The nozzle cables has to go in bottom slot and has to be inside the ziptie loop. Tighten the ziptie. Step 17 Assembe the spiral wrap Wrap the spiral wrap around all wires going out from extruder as shown in the picture Rotate the spiral wrap on the cables to have one turn of wrap on cables without nozzle cables manual.prusa3d.com Page 11 of 12

Step 18 Secure the spiral wrap Tighten the

picture Cut the remaining part of zipties as

Step 19 Guide the ziptie through the holes in

not catching any wires inside the RAMBo cover

Cut the remaining part of ziptie Continue by

Extruders Assembly This document was last

12 Step 18 Secure the spiral wrap Tighten the spiral wrap with zipties as shown in the picture Cut the remaining part of zipties as shown in the picture. Step 19 Guide the ziptie through the holes in RAMBo cover as shown in the picture. Make sure that the ziptie is not catching any wires inside the RAMBo cover Tighten the Extruder wires to the RAMBo cover Cut the remaining part of ziptie Continue by assembling the extruders 3. Extruders Assembly This document was last generated on :09:37 AM manual.prusa3d.com Page 12 of 12

5. Extruder Assembly

5. Extruder Assembly Guide for the assembly of the Extruder. Written By: Josef Prusa 2017 manual.prusa3d.com Page 1 of 22 Step 1 Get the necessary tools 2.5 and 1.5 mm Allen key Needle-nose pliers Step