Changing a front wheel bearing

Post by **Spikey_head** » Mon Mar 06, 2023 10:06 am

Anyone done it?

How difficult is it?

Post by **Cjg62** » Mon Mar 06, 2023 11:38 pm

Pm sent.

Post by **Spikey_head** » Tue Mar 07, 2023 6:57 am

PM replied to

speedmachine · Post by **speedmachine** » Tue Mar 07, 2023 6:54 pm

Nobody learned a thing

Post by **Spikey_head** » Tue Mar 07, 2023 7:07 pm

I've learned sufficient

Which perhaps isn't very helpful to others...

Post by **Cjg62** » Tue Mar 07, 2023 11:13 pm

Kev lives near me so I pm’d my phone number. I find it easier to talk than type!

Changing the bearing is quite straight forward if you have a decent hydraulic press, which I have.

Sorry it wasn’t more interesting?

speedmachine · Post by **speedmachine** » Wed Mar 08, 2023 6:54 am

Cjg62 wrote: ↑Tue Mar 07, 2023 11:13 pm Kev lives near me so I pm’d my phone number. I find it easier to talk than type!

Changing the bearing is quite straight forward if you have a decent hydraulic press, which I have.

Sorry it wasn’t more interesting?

Haha, no worries, was just having a laugh

Post by **Cjg62** » Wed Mar 08, 2023 8:25 am

speedmachine wrote: ↑Wed Mar 08, 2023 6:54 am
Cjg62 wrote: ↑Tue Mar 07, 2023 11:13 pm Kev lives near me so I pm’d my phone number. I find it easier to talk than type!

Changing the bearing is quite straight forward if you have a decent hydraulic press, which I have.

Sorry it wasn’t more interesting?
Haha, no worries, was just having a laugh

Good point though! I've learned a lot from the forum.

I'll take a few pics and post them. Might help someone.

$:-\$

Curves Junkie · Post by **Curves Junkie** » Wed Mar 08, 2023 2:34 pm

Cjg62 wrote: ↑Wed Mar 08, 2023 8:25 am
Good point though! I've learned a lot from the forum.

I'll take a few pics and post them. Might help someone.

Post by **Spikey_head** » Sun Apr 09, 2023 8:02 am

We did it yesterday. Many thanks to Chris for his help.

Here are the pics I took before my phone ran out of battery. They don't show too much, but the image of the hub in the hydraulic press is useful to show how much of a pain that step is. It's very difficult to support the hub in the press. Everything else is very straight forwards, apart from wrestling with the circlips that sit either side of the bearing, and which, like all circlips, are evil and determined to wriggle away from where you want them to go.

Post by **Cjg62** » Mon Apr 10, 2023 12:44 pm

A few more pics from the "operation"

As Kev said, the most difficult part was pressing out the wheel flange. There isn't a flat surface available that allows enough clearance.

For reference, the complete assembly consists of the upright itself which has the bearing pressed into it, the wheel flange is pressed into the bearing and the stub axle keeps it all together with a large nut.

: IMG_0232.jpg (4.99 MiB) Viewed 3505 times

Pressing out the wheel flange.

: IMG_0215.jpg (2.92 MiB) Viewed 3505 times

Pressing the old bearing out.

: IMG_0216.jpg (2.65 MiB) Viewed 3505 times

New bearing in.

: IMG_0219.jpg (3.24 MiB) Viewed 3505 times

Wheel flange back in.

: IMG_0221.jpg (3.22 MiB) Viewed 3505 times

The stub axle then just slides back onto the splines and the nut goes on last. The nut needs a huge torque so this is easier done when the whole thing is back together and you have a willing accomplice to heave on the foot brake .........

speedmachine · Post by **speedmachine** » Mon Apr 10, 2023 3:26 pm

Nice write up, the atom 4 hubs are a giant leap forward

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