====== Step 4 – Install Gear & Drive Shafts  ======

<WRAP info>
New Parts needed for this step:
  - Weight Shaft Key
  - Weight Shaft
  - Gearbox Shaft
  - Brake/Pulley Shaft
  - Pulley
</WRAP>

===== Step 4.1 – Identify the parts  =====

From left to right, the parts are Weight Shaft Key, Weight Shaft, Gearbox Shaft, Brake/Pulley Shaft (above), and Pulley.

{{:3d_prints:instructions:conventional:4a.jpg?700}}

-----

===== Step 4.2 – Install Brake/Pulley Shaft =====

Install the Brake/Pulley Shaft by inserting it in the rear most socket.  From the rear of the unit, the shaft is inserted on the right side.

<WRAP tip>
You will need to fiddle with the gear a bit to allow the shaft to slide through.
</WRAP>

{{:3d_prints:instructions:conventional:4b.jpg?700}}

-----

===== Step 4.3 – Correct orientation =====

The Pulley goes on the rear left of the unit.

{{:3d_prints:instructions:conventional:4c.jpg?700}}

-----

===== Step 4.4 – Install Pulley =====

Slide the Pulley onto the Pulley/Brake Shaft and into the socket.

{{:3d_prints:instructions:conventional:4d.jpg?700}}

-----

===== Step 4.5 – Align the Gearbox shaft =====

The gearbox shaft goes in the middle receiver.  It can only be inserted one way.

<WRAP tip>
The Gearbox gear may need to be fiddled with as well to allow the Gearbox shaft to slide through.
</WRAP>

{{:3d_prints:instructions:conventional:4e.jpg?700}}

-----

===== Step 4.6 – Insert the gearbox shaft fully =====

Push the gearbox shaft in completely.

<WRAP tip>
The shaft may need to be rotated slightly to be completed inserted.
</WRAP>

{{:3d_prints:instructions:conventional:4f.jpg?700}}

-----

===== Step 4.7 – Weight shaft installation =====

Slide the weight shaft through the front most receiver and weight gear.  The weight shaft is bidirectional and can be inserted from either side.

<WRAP tip>
Pay attention to the keyhole for the weight shaft key.
</WRAP>

{{:3d_prints:instructions:conventional:4g.jpg?700}}

-----

===== Step 4.8 – Align the key way =====

The weight shaft key has a rounded and flat side.  The flat side goes into the weight shaft keyhole.

<WRAP tip>
Small fingers or some pliers/tweezers make this step much easier!
</WRAP>

{{:3d_prints:instructions:conventional:4h.jpg?700}}

-----

===== Step 4.9 – Install weight shaft key =====

Rotate the gears to align the key way if it is not already aligned.

{{:3d_prints:instructions:conventional:4i.jpg?700}}

-----

===== Step 4.10 – Correctly position the key =====

Slide the shaft until the key is centered in the gear.

{{:3d_prints:instructions:conventional:4j.jpg?700}}

-----

===== Step 4.11 – View of completed gearbox =====



{{:3d_prints:instructions:conventional:4k.jpg?700}}

-----
<WRAP group>
<WRAP quarter column>
[[3d_prints:instructions:conventional:step3|⬅ Previous Step]]
</WRAP>

<WRAP right quarter column>
[[3d_prints:instructions:conventional:step5|Next Step ➜]]
</WRAP>
</WRAP>