mot fail on wheel bearing

On Fri, 14 Oct 2011 20:12:06 +0100, dave stammered:

It's purely on play at the wheels as I understand it. My Focus has a noisy bearing. I thought it was going to fail last weekend. I even asked the tester about it when he passed, it - no, if there's no play, it'll pass. Any play, it will fail.

not quite true it can have a degree of play, but will fail on excessive play or roughness in the bearing.

front suspension & wheel bearings.

Fair enough - thanks for the info.

It depends. Some older cars had adjustable front wheel bearings and these are designed to have some play. But most are none adjustable and have no play.

In message , "Dave Plowman (News)" writes

Nostalgia! I remember taking out the split pin, turning the nut to the next castellation, and replacing the pin.

On Fri, 14 Oct 2011 21:57:10 +0100, reg stammered:

Thanks Reg. I'm still miffed it passed, as it's clearly noisy. I thought that would show up some roughness.. apparently not.

if it is a driven wheel then it is much harder to feel/hear the roughness by spinning the wheel, it just can't be spun by hand fast enough. Which was one of the good features of the old test, when cars were actually driven to assess their quality as part of the MoT test.

Other thing is failure of these types is rare. Or is on mine. They seems to be a service item on many other cars, not cheap, and often a bugger to replace.