Tha Original i30 Owners Club

Rear wheel bearing grumble

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Offline number-1

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    • Posts: 8

    • gb United Kingdom
      London
Hi all

Does anyone have a link to a video on replacing the rear bearing on a 2009 1.6 petrol. I Think i can hear a grumble not too sure as the car is new to me, so wanted to see how easy it is to do. Ive seen a front bearing video and looks pretty straight forward

Cheers
  • 2009 I30


Offline BrendanP

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    • gb United Kingdom
      East Midlands
I've taken the rear hub off a 2011 1.6 diesel, in order to replace the brake backing plate which had rusted away. If you're going to replace the hub I'd check the condition of the plate to see if it needs replacing as well, because it might take a while to get one. After jacking up the car and removing the wheel, and supporting it on axle stands, you have to take off the brake caliper and the yoke that holds the pads. At this point it may be worth putting the wheel back to feel for how rough the bearing is without the pads chafing against the disc, although it may not show up unless there is weight on it.

Slacken off the handbrake adjuster and take the brake disc off, then you need to remove the brake shoes & springs. The bearing is integral to the hub, I don't know if you can get the bearing separately. The hub is secured by 4 bolts which screw in from the back. They were really tight so I used penetrating oil and heat from a blowtorch to loosen them off. Once they're out, just fit the new hub assembly. If replacing the backplate, you'll have to transfer the slave piston and the rubber boot for the handbrake lever.

Re-assembly is just a reverse of the process, don't forget to reset the handbrake slack. It's also a good opportunity to make sure the handbrake lever in the wheel is moving freely as they are prone to seize up. If necessary, take it apart, clean off rust and scale, and lubricate it. If you look through my posts I've have included ones with step by step photos of stripping down the rear brakes
  • i30 CRD


Offline number-1

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    • gb United Kingdom
      London
Thanks mate. Perfect guide. I followed it and was done from start to finish in 20 mins so great advice.

The only thing i didn't do was remove the brake shoes. Luckily my hub bolts came off easily so no need for flames.

  • 2009 I30


Offline BrendanP

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    • gb United Kingdom
      East Midlands
Glad to help, especially as you didn't have to disturb the brake shoes. In my case I wasn't replacing the hub, just had to remove it to replace the brake backing plate.
  • i30 CRD


PGN I30
Glad to help, especially as you didn't have to disturb the brake shoes. In my case I wasn't replacing the hub, just had to remove it to replace the brake backing plate.

Out of interest, why did you go to all that trouble to replace a backing plate, I've owned lots of cars with no backing plates, if/when mine rusts on my car I think I would just remove it and bin it.


Offline mac768

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    • de Germany
Hi, I'm tried the same procedure, sorry for necrobumping.

Unfortunately, one of the four bolts securing the wheel bearing assembly gave out while torquing it. So I got a replacement wheel bearing assembly (I don't think the bearings survive being hammered out) in the hope it comes with fresh bolts, but that's not the case.
I did check for part numbers, but those bolts are not to be found in the drawings. Any advice where/how I can get new bolts fit for the task?
  • i30 FD


Offline BrendanP

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    • gb United Kingdom
      East Midlands
My old car was a 2011 diesel, and looking on www.partsouq.com, searching using the VIN number, it looks like the part number is 1123610456K or 1123410453 as a substitute. It shows the quantity as 8, which is consistent with 4 on each side. If you can search using your VIN, you can check if they're the same. If you search by part number it will take you to the drawing of the rear brake and hub assembly.

In the closest town to where I live in the UK, there is a specialist fasteners supplier and if I took them one of the healthy bolts, I'm pretty sure they would have a matching bolt in stock.
  • i30 CRD


Offline BrendanP

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    • Posts: 585

    • gb United Kingdom
      East Midlands
Glad to help, especially as you didn't have to disturb the brake shoes. In my case I wasn't replacing the hub, just had to remove it to replace the brake backing plate.

Out of interest, why did you go to all that trouble to replace a backing plate, I've owned lots of cars with no backing plates, if/when mine rusts on my car I think I would just remove it and bin it.

Because the backing plate holds all the handbrake parts together in the right place. If it rusts through and they're no longer held in place the handbrake would stop working. If all it did was keep excess water off the discs then I might just pull it off and bin it
  • i30 CRD


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