roborovski007

Just did my weekly bike cleanup, just notice that when i wiggle the rim back-and-forth between the brake shoes, there's a slight play about 1.5mm. This is with the QR tightened. May I know is this ok or there's something loosened ?

jyl

Hubs a bit loose?

roborovski007

not sure about it as i'm not really experience in this. How do I check ?

xenologer

dismount the wheel, try to wiggle the axle by hand. If you can feel it knocking around its either loose or you have damaged bearings. at that point; since you have no experience with adjusting hubs; which requires corect tools/technique; take it to LBS for hub overhaul.

Bill Kapaun

Tighten the QR slightly tighter and it should disappear as the axle compresses. (assuming conventional cup & cone)
IF it's still smooth & easy turning, you should be good.
OTOH, WHEN is the last time you serviced the bearings?

roborovski007

its fulcrum racing 7, not sure about the hub type, still easy turning though. wheels currently clocking around 5000km

IthaDan 

Lift the front wheel about 6" and let it drop, other than the levers clapping there shouldn't be any sounds but a bounce like a basketball. If there's a clunk in there, the hub probably needs be tightened.

Dropping bikes an you: a recipe for success.

roborovski007

unfortunately yea, there's like a vibrating sound came from the wheel, how do i tighten the hub ?, is hex key enough ?

cny-bikeman

That's actually a lot of play. It won't disappear with tightening the skewer, and the amount of miles is irrelevent - bearings can come out of adjustment at any time. You did not specify whether front or rear wheel, but as it seems to have happened suddenly and you clean your bike weekly it's possible your axle has broken, especially if on a rear wheel. You need a cone wrench to adjust (not tighten) the hub bearings and if the axle is broken it becomes much more complicated. If you are willing or must do it on your own follow the Park procedure or Google bicycle hub adjustment but again things can get complicated if it's the rear wheel.

I also recommend taking it to a shop, as there may be other maintenance items that need attention. Also I would recommend you learn about how to check your bike on a regular basis.

IthaDan 

Got me man, don't have those wheels. However, "fulcrum racing 7 hub adjustment" came up with a lot of links- https://www.google.com/search?client=...UTF-8&oe=UTF-8

TSRH: looks like you need a 2.5mm key- https://www.fulcrumwheels.com/system/...REAR_23-01.pdf
E: not for racing 7.

roborovski007

i had found the one for racing 7, is it possible of a loosen axle end cap ?

cny-bikeman

Well, I did not realize it was a sealed bearing type. The two links show you what to check and how to adjust or replace as necessary. We can't tell you what the problem is - you have to investigate yourself. Once you can see and access the bearings look for rust and turn the inner part with your finger to check for smoothness. If the bearing are rough one needs to be very careful in replacing them with the proper part and procedure.