In this video I'm disassembling, cleaning, replacing the sealed bearings, and reassembling a Shimano Deore Microspline Freehub (Shimano P/N: FH-MT410 & FH-MT410-B).

I've read through all of Shimano's documentation and watched what seems to be the only video on the topic over at @evmechanic 's channel and compiled my own step-by-step guide and list of required components and tools to accompany this video. You can find links to everything down below.


🚲 The replacement bearings needed are:

2x - 6903 (17x30x7mm) for Hub Body
https://amzn.to/3T8RMYL

1x - 6803 (17x26x5mm) for Freehub Body Unit Left Side
https://amzn.to/3t0oBfK

1x - 6802 (15x24x5mm) for Freehub Body Unit Right Side
https://amzn.to/3T9uMZr

(I'll earn a small commission if you buy through these links)

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🔗 Helpful Links

My Step-by-Step Guide
https://docs.google.com/document/d/1k...

​ @evmechanic 's Video
   • How to Service Shimano Hub (12 Speed ...  

Shimano Webpage for FH-MT410-B Hub
https://bike.shimano.com/en-EU/produc...

Shimano Dealer Manual Step-by-Step Website
https://si.shimano.com/en/dm/MBHB002/...

Shimano Dealer Manual .pdf
https://si.shimano.com/en/pdfs/dm/MBH...

Exploded View & Part Numbers
https://si.shimano.com/en/pdfs/ev/FH-...

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🛠️ Required Tools

Cassette Lockring Tool - https://amzn.to/3uKXCFy
Adjustable Wrench
Chain Whip - https://amzn.to/4a1o4uD
Centerlock Brake Removal Tool - https://amzn.to/3uLttG3
Pliers (for right side end cap removal)
2.5mm Hex Wrench (for left side lock nut removal) - https://amzn.to/3RuPFNK
Pick
Bearing Press Tool - https://amzn.to/3RrfqhK
Hammer
Paper Towels

Shimano Premium Grease (Y-04110000) - https://amzn.to/4a6evKK
Shimano Special Freehub Grease (Y-3B980000) - https://amzn.to/3uKnAch
Degreaser - https://amzn.to/41aoKKi

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📚 Chapters

00:00 - Intro
01:06 - What you'll need
02:30 - Wheel Removal
02:40 - Cassette Removal
02:58 - Brake Rotor Removal
03:07 - Right Side Disassembly
03:29 - Freehub Body Removal
03:59 - Left Side Disassembly
04:34 - Left Side Bearing Removal
05:29 - Right Side Bearing Removal
06:10 - Hub Shell Close Up View
06:43 - Freehub Body Unit Disassembly
07:36 - Freehub Body Exploded View
07:59 - Full Assembly Exploded View
08:52 - Freehub Body Pawls Removal
09:13 - Cleaning the Parts
09:51 - Freehub Body Reassembly
14:23 - Left Side Bearing Installation
15:25 - Right Side Bearing Installation
19:30 - Left Side Reassembly
20:17 - Right Side Reassembly
23:15 - Axle Fit Test
25:08 - Brake Rotor Installation
25:40 - Cassette Installation
27:03 - Full Wheel Assembly Completed
27:15 - Installing the Wheel Back on the Bike
27:45 - First Spin Test
28:05 - Ratcheting ASMR
28:15 - Recap & Comments
30:32 - Outro
30:55 - Ending Screen

Music from Uppbeat (free for Creators!):
https://uppbeat.io/t/avbe/night-in-kyoto
License code: KKWCFGODIQAYZKYB