Roomba i Series/E6 Roller Brush Holder Replacement

This is just the arm piece on the Cleaning Head Module for the i Series and E6 Roombas that holds the roller brushes into place. Some disassembly and re-assembly is required - you'll need to move the bright green latch assembly from the old part to your new one, and probably need to chase a few holes with a drill bit.

The only OEM option if this piece breaks on your vacuum is to buy a completely new Cleaning Head Module for $65, since they don't sell this easily servicable arm by itself. Not only that, but the reviews show that a lot of people are battling electrical gremlins when they replace the module, so this also helps avoid that roll of the dice.

Hopefully this will save you some hassle and keep a bunch of otherwise functioning Cleaning Head Modules out of the landfill.

Printed on an Ender 3 S1 (Direct Extruder). There is probably a much better way to orient this on the print bed than how I currently have it, although the supports were very easy to file off the back side. I really just wanted to fix my vacuum and be done.

The bright green latch, its spring, and the pin for the latch need to be moved to the new part.

1. Remove the old part from the Cleaning Head Module if you haven't already (You don't need to remove the cleaning head module from the vacuum, just push wheel down and lift the module out slightly and you can get to the screw that holds this piece on with a small screwdriver)
2. Pop the pin out of the old part (I just used my smallest nail set and punched the pin out)
3. Chase the hole for the pin in the new part with a 5/64 drill bit (5/64 is a little undersize compared to the pin, but the friction fit will help is stay secure since you can't really form the end of the pin to mechanically lock it like it was originally)
4. Align the green latch and spring with the hole in the new part and press the pin through the 5/64 holes (I also dabbed a bit of extra thin CA on each end of the pin for insurance)
5. Chase the large hole that mounts to the Cleaning Head Module with a 15/64 drill bit
6. Install the new assembly onto the Cleaning Head Module, install the rollers, snap into place, and enjoy your clean floors

The trapezoidal blade in the middle of the part is intentionally modeled a little shorter, and with more of a draft angle, than the actual part because my first attempt clashed on the top of the blade and wouldn't fully latch. The blade is really just a rough guide for the latch and keeps it from opening sideways and ejecting the rollers, so I prioritized being able to get a solid latch over perfectly matching the OEM part.

The two portions that meet the hexagonal roller attachments are modeled at 120 degrees, but everything else is designed around caliper measurements. I have no idea how important all of the detailed features are to this part - I definitely fudged some of the feature dimensions because I couldn't get a caliper in that space, and I'm not convinced they do anything critical.

The real part has several elastomer pads molded with it, but I haven't noticed any issues with performance or noise levels by having a solid PLA piece.