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Hi,
I’m heading away early tomorrow morning for the weekend but I noticed some play in my rear hub (about 9 months old.; I think the bearings need pre-loaded. Most of the guides instructions I can find on line seem to deal with the standard hub (tightening with 2 5mm allen keys) but obviously this won’t work with the 142x12 rear hub. Can anybody give some idiot-proof instructions? – the more basic the better!
Thanks,
Donncha.
You should just be able to undo the maxle lever (no need to unscrew). Loosen the 2.5mm bolt on the non-drive side of the hub and tighten the pre-load adjuster...it's usually easiest to put the allen key in the bolt and tap it to do this.
EDIT: Just realised you might not be able to access the 2.5mm bolt. You might have to turn the pre-load adjuster so you can get at it.
Any instructions for Chris King products are on their website too.
Thanks for the reply!
I also e-mailed Evolution imports who resonded instantly!
In case anyone else needs to know:
Your hub has a heavy duty axel design rather than the 2 piece axel design you have seen online (two 5mm allen keys ether end). In order to preload your hub you will need to undo the 2.5mm allen key grub screw on the axel clamp (this is the doughnut shaped piece on the non drive side of the axel-as a tip I would remove the disc rotor first to make it easier to undo this and not round out the head) once the grub screw is lose use your hands to hold the drive side of the axel still and using your 2.5mm allen key in the hole under the grub screw tighten clockwise the axel clamp to preload the bearings (these need to only be hand tight so the bearings still run free but have no movement) once you have the correct preload tighten the 2.5mm bolt to hold the clamp in place.
There's absolutely no need to take the rotor off...you can spin the axle round until you can access the bolt. Once you realise where that is, you can put the wheel back on with the bolt in that position.
It's much easier doing it with the wheel still in the bike, you probably won't be able to tighten the pre-loader the required amount by hand either. Tap the allen key a little, like I said above.
Thanks but the rotor obscures the 2.5mm bolt (the only bolt I see) so I think the rotor will have to come off.
you can spin the axle round until you can access the bolt.
It might be easier taking the wheel out to do this but you shouldn't need to really. The pre-load adjuster is fixed to the axle, which will turn when you loosen the maxle off.
It's a 2 second job tightening it up. If you really can't see how to do it, take it to your LBS.