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Video guide for disassembly, bearing replacement, and reassembly of Neo and Neo Ultimate Freehubs

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What you will need:
Smooth-jawed pliers or an axle vise
Blind bearing puller
Hammer
Punch
Bearing press with appropriate drifts
Small flat-tipped screwdriver
Assembly grease
Freehub grease
Cassette tool
Chain whip
Toothbrush
Gloves

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Your freehub body should be removed a few times per year to be cleaned and lubricated. In this video, we will cover the complete disassembly and service of the freehub body.

Before removing your freehub body, remove the cassette from the wheel.

To remove the freehub body, grip the body with your hand and pull away from the hubshell.

The axle may pull out of the hub with the freehub body. If this happens, pull the axle out of the freehub body and set aside for later use.

The red freehub spacer may remain against the drive side hubshell bearing. If so, remove it and set it aside for later use.

If the axle remains in place, remove it from the shell and set aside along with the red freehub spacer.

If any of these pieces are too difficult to remove by hand, you may use an axle vise or smooth-jawed pliers to remove them

Remove the comolded seal from the hubshell with a small flat-tipped screwdriver.

Clean the drive ring, and co-molded freehub seal with isopropyl alcohol, and a clean rag and set aside for later use.

Wipe excess grease from your freehub body.

Using a small flat-tipped screw driver, pry the pawl retaining ring off of the freehub body.

Slide the pawls, and then pawl springs, out of their respective pockets in the freehub body.

Thoroughly clean the pawls, pawls springs, and pawl pockets in the freehub body with isopropyl alcohol, a toothbrush, and a clean rag.

To remove the bearings, start by removing the rubber seal adjacent to the outboard bearing with a small flathead screwdriver

Insert 15mm Sealed Bearing Extractor into one of the freehub bearings. Tap Extractor and bearing out of hub shell using punch and hammer. Perform this step over a rag as the bearing, extractor, and inner axle sleeve will fall from the hub shell when the bearing is removed.

Thoroughly clean freehub body bore, and freehub sleeve, with isopropyl alcohol and a clean rag.

Apply a thin layer of grease to the bearing bore

Press the bearings in, one at a time, using a bearing press and the appropriate drifts. Don’t forget to install the axle sleeve between the two bearings.

Reassemble the freehub by first installing the pawl springs, and then the pawls.

Install the pawl retaining ring into its groove in the freehub body.

Small grooves and burrs from the cassette’s contact with the freehub will not affect hub performance, and can be gently filed down to allow easier cassette installation

Apply a thin layer of freehub grease to the drive ring and freehub pawls

Reinstall the co-molded seal to the hubshell

Reinstall the axle and freehub body spacer

Install the freehub body onto the axle and insert into the hubshell by gently pressing down and twisting clockwise

Lastly, reinstall your endcaps

This video shows how to remove the disc from an angle grinder without using the pin wrench. This can be dangerous and is not recommended, but I thought I’d show you how to do it anyway (do it at your own risk). Sometimes it’s not always possible to reach the nut using the pin wrench with some types of deep disc, so this video should prove helpful for some people! A mate that I work with does this on a regular basis