Automower 420, 430X, 440, 450X, 520, 550, 550 EPOS front wheels repair and modification

[@jrioscouto]

Your automower videos are the best online! Not only you know how to fix them, you know how to improve the design. I wonder why husqvarna doesn't modify some parts for better life... suppose they just interested in selling parts. The front wheels are in my opinion the element that you are changing the most, alongside with the sliding plate and cutting disc. Let's see if they can endure 2 seasons with your mod!

[@ouherizon]

This design is still flawed, since outer bearing needs to sit inside a sleeve (originally there is no sleeve), otherwise wheel will slip on the shaft over time, bearings and inner plastic will diminish, which happens due to lack of axial pressure on the bearing (there will be a significant play, before this happens though). After installing a sleeve, axial pressure on the bearing is not needed at all (which is actually preferred to keep bearings from deteriorating), since sleeve keeps wheel from slipping and tilting towards the shaft. 19 mm milling cutter is needed for honing so sleeve could fit inside an outer plastic. At the moment I am testing sleeves, which are made of copper.

[@jrioscouto]

Thanks for the update! A video would be nice if that works. By the way, I've found an alluminium lock collar which is 6mm instead of 7 mm wide. Do you think i'll be able to avoid filing the pieces with it? Again, thank you for your work.

[@ouherizon]

@@jrioscouto I might do updated video about this matter, but only if this is tested properly. At the moment this sleeve mod is in testing phase. Yes, if 6 mm wide lock collar is installed, no filing is needed.

[@cdx873v]

Thanks allot for this tutorial! I need to check my mowers now, haha. I love these kind of videos!

[@jaystheone1]

Oil seal 12x18x3 mm is just to replace the original one? So I can just purchase the Husqvarna one? Im having problem finding Oil 12x18x3 one also the 2.5x1x4.5 O ring is hard.

[@ouherizon]

Try aliexpress.com