Share

Maintenance

Cassette body replacement


1. Tools for the job

2. An axle vice secures the wheel

3. Use a 17mm spanner and a 15mm cone spanner

SHIMANO REAR HUB SERVICING
Stripping and replacing a cassette body
1 — 1. Tools for the job
The tools required for stripping and servicing hubs as follows:
Cone spanners (Shimano rear hub has 15mm cone, however these can vary in size)
Torque wrench
17mm open ended spanner
10mm Allen key
Grease
Axle vice and bench mounted vice
wheel tools.jpg

250×149

2 — Use an axle vice for holding the hub securely and safely
Wheel_in_vice.jpg

3 — Hold the cone with a cone spanner and release the lockring with a 17mm spanner. Remove the cone, spacers and (very carefully) the axle.
cone_adjust1.jpg

4 — Leave the drive side cone assembly complete on the axle, this will simplify re-assembly. This also shows the bearings at the edge of the cassette body, the races on the drive and non-drive sides are spaced as far apart as possible for strength.
drivesidebeargs.jpg = 250×188

5 — Clean the inside of the bearing surfaces and inspect for damage. Pitting to the bearing surfaces and cones will require replacement of either the cones or the hub assembly
cleanbearings.jpg 250×188

6 — Once the hub is cleaned the cassette body can be removed with a 10mm Allen key, this is usually factory fitted and tight so use an appropriate Allen key (i.e. a long one)
undo_cassette_body.jpg 250×187

7 — The cassette body can be replaced if necessary, set the torque wrench to 34.3—49 Nm and tighten the bolt. Cassette bodies can be soaked in release agent (parrafin/diesel fuel) overnight to rejuvenate the internals, this will not cure long term problems but shifts the muck from the mechanism.
torquecassettebody.jpg 250×255

8 — Grease and reset the bearings into the hub, 9 x 1/4″ bearings are required. It is impossible to detect damage to the surface so new ones should be used to ensure smooth running.
greasedbearings.jpg 250×188

REASSEMBLY…
Restore all the bearings into the hub bearing faces. Insert the axle from the drive side (reverse of step 4)
finger tighten the cone onto the axle so the bearings run smoothly and freely. Then fit any washesr and spacers. Tighten the locknut onto the stack. then
cone_adjust1.jpg

Share

Newsletter Terms & Conditions

Please enter your email so we can keep you updated with news, features and the latest offers. If you are not interested you can unsubscribe at any time. We will never sell your data and you'll only get messages from us and our partners whose products and services we think you'll enjoy.

Read our full Privacy Policy as well as Terms & Conditions.

production