4. Idler body assembly

Relevant for:

MMU2S

Last updated 5 months ago

Difficulty

Easy

Steps

Available languages

Step 1 Tools necessary for this chapter

⬢この章で準備するもの:

⬢M3ネジ用の2.5mm六角レンチ

⬢ナットの調整用の 1.5mm 六角レンチ

Note there are two types of the 2.5mm Allen keys. Use the longer one for screws, which are difficult to reach as this Allen key has a ball end.

You can use your own tools if you find them more suitable for the build.

Step 2 アイドラーパーツの準備

⬢以下のステップに向けて、下記の部品を用意してください。

⬢mmu2-idler (1x)

⬢625 bearing (6x)

⬢M3x10 screw (2x)

⬢M3nS nut (2x)

⬢Shaft 5x16sh (5x)

ベアリングは6個必要ですが、シャフトは5個しかないことに注意してください。

Step 3 アイドラーベアリングの組み立て（パート1）

WARNING: read the instructions carefully, you have to assemble bearings in the correct order, otherwise you will encounter problems later!

⬢Take the first bearing and place it in the middle of the idler. Insert the shaft as in the picture, make sure you are using the opening on the top.

⬢Slide the shaft in using 2.5 mm Allen key. Make sure the shaft is all the way in and not blocking other slots for bearings.

⬢Take the second bearing with the shaft and assemble it in the same way as the previous one.

⬢Take the third bearing with the shaft and place it in the idler.

⬢Make final a check, ensure all three bearings can rotate freely.

⬢There are small openings on both sides of the idler, which can be used to push the shaft back.

Step 4 アイドラーベアリングの組み立て（パート2）

⬢Turn the idler around and continue with the bearing assembly.

⬢Start with the slot closest to the centre of the idler.

⬢Finish bearing assembly with the slot on the right side.

⬢Make final a check, ensure both bearings can rotate freely. There should be no increased friction, or bumps, which would slow down the bearing.

Step 5 Idler nuts assembly

⬢Take two M3nS nuts and slide them in the idler all the way in.

Ensure proper alignment using a 1.5 mm Allen key.

⬢Grab two M3x10 screws and screw them slightly in the idler, just to catch the nuts. Five or six turns are enough for now.

Step 6 Idler centre bearing assembly

⬢Take the remaining bearing and slide it in the centre of the idler.

⬢Make sure the bearing is flush (aligned) with the idler surface.

Step 7 Final check

⬢Before proceeding, check following:

⬢All five bearings are able to rotate freely.

⬢The sixth bearing is aligned with the surface of the printed part.

⬢Both nuts are inserted.

⬢Screws are just slightly tightened.

Keep the idler close, we will need it soon.

Step 8 アイドラーボディーパーツの準備

⬢以下のステップに向けて、下記の部品を用意してください。

⬢mmu2-idler-body (1x)

⬢M3x10 screw (5x)

⬢M3nS nut (2x)

⬢Shaft 5x16sh (1x)

⬢Idler / Extruder motor (1x)

In case of the MMU1 to MMU2 upgrade use the motor from the disassembled MMU1. This motor is not included in the MMU1-MMU2 upgrade package.

Step 9 Inserting M3nS nuts into idler-body

⬢Take the M3nS nut and insert in the slot of the idler-body, all the way in.

⬢Turn the idler-body to the other side, take the second M3nS nut and insert in the slot, all the way in.

⬢1.5mm六角レンチを使用して、ナットを正しい位置に合わせます。

Step 10 Inserting the idler in the idler-body

⬢Slide the idler into the idler-body. Mind the correct orientation of the M3x10 screws.

⬢Push the idler down.

⬢Using fingers rotate the idler back and forth to ensure smooth movement. Some friction (rubbing) between the parts is acceptable.

⬢Rotation of the idler is limited by the stop on the idler-body.

Step 11 アイドラーモーターの組み立て（パート1）

⬢Before we assemble the motor to the idler-body, we need to rotate the shaft properly.

⬢Check the idler opening, which ISN'T ENTIRELY CIRCULAR! There is a flat part, which matches the shape of the motor's shaft.

⬢Rotate the shaft as in the second picture. To match the opening in the idler.

Step 12 アイドラーモーターの組み立て（パート2）

⬢Move the motor towards the idle-body. If necessary ADJUST THE ROTATION OF THE SHAFT to match the opening in the idler.

⬢Make sure the CABLE from the motor is FACING UP.

⬢Slide two screws M3x10 in the opening on idler-body and tighten them slightly.

⬢Turn the entire assembly upside-down and insert second couple of the M3x10 screws, again tighten them slightly.

⬢Make sure the motor is seated properly (in direct contact with the idler-body), then tighten all four screws. Tighten screws on a diagonal.

Use the longest 2.5mm Allen key with the ball end to reach the M3 screws on the underside better.

Step 13 アイドラーモーターの組み立て（パート3）

WARNING: read the instructions first! There is a risk of cracking the printed part!

⬢Insert the shaft 5x16sh into the idler-body and align it with the surface. Make sure the shaft reached the idler.

⬢Ensure the bearings are in the middle of the grooves in the idler-body and you can rotate the idler easily, if not slide the entire idler.

⬢Check there is a small gap between the idler (barrel) and the idler-body. In case the parts are grinding you might have issues with the filament loading!

⬢Screw in the M3x10 screw as a safety.

⬢Tighten both M3x10 screws until you reach the motor's shaft. Tighten carefully, as you might crack the printed part (idler)!!!

Step 14 It's Haribo time!

⬢Stop for a while and treat yourself ;)

⬢Idler assembly is quite easy, 10 % is enough.

Step 15 Final check

⬢Make sure the shaft rotates freely. The rotation is limited by stops, but within them it should be smooth.

⬢Make sure both M3nS nuts are in.

⬢Ready for more? Let's proceed to the 5. Pulley body assembly

4. Idler body assembly

4. Idler body assembly

Step 1 Tools necessary for this chapter

Step 2 アイドラーパーツの準備

Step 3 アイドラーベアリングの組み立て（パート1）

Step 4 アイドラーベアリングの組み立て（パート2）

Step 5 Idler nuts assembly

Step 6 Idler centre bearing assembly

Step 7 Final check

Step 8 アイドラーボディーパーツの準備

Step 9 Inserting M3nS nuts into idler-body

Step 10 Inserting the idler in the idler-body

Step 11 アイドラーモーターの組み立て（パート1）

Step 12 アイドラーモーターの組み立て（パート2）

Step 13 アイドラーモーターの組み立て（パート3）

Step 14 It's Haribo time!

Step 15 Final check

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