Wheel bearings

[alzieboy]

Had an advisory on my MOT regarding slight play on front wheel bearings on my E350cdi Coupe, is this a diy job or should I take to a local indie .

 

[markjay]

Either...

When I was a younger man I used to do it myself. In the olden days it was tighten slowly until the wheel no longer rotates 100% freely (slight resistance felt and/or noise heard), then undo the nut a smidgen. There was also a securing clip that needed to be aligned.

But these days I just leave it to the specialists.... Terry at Wayne Gates did mine a couple of months ago

 

[OneForTheRoad]

Diy. Just dont overtighten nut.i heard the assembly expands when hot.

 

[magsbert]

Did mine with D.T.I end flout= .01 m/m less than .0005 inch


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[190]

Mercedes make wheel bearing adjustment easy. Unlike the old fashioned castellated nut and cotter pin that has discrete amounts of adjustment MB use a nut that is infinitely adjustable and is clamped in place with an Allen key. may sure to back off the brake pads so that they don't interfere with the feel. It's a very fine thread and if we knew the thread pitch the end float adjustment could be done by rotational measurement of the nut.

E.G. If the thread pitch was 1mm, then setting the end float to .01mm would entail rotating the nut out by 3.6 degrees which as markjay said is a smidgen.

 

[markjay]

Mercedes make wheel bearing adjustment easy. Unlike the old fashioned castellated nut and cotter pin that has discrete amounts of adjustment MB use a nut that is infinitely adjustable and is clamped in place with an Allen key. may sure to back off the brake pads so that they don't interfere with the feel. It's a very fine thread and if we knew the thread pitch the end float adjustment could be done by rotational measurement of the nut.

E.G. If the thread pitch was 1mm, then setting the end float to .01mm would entail rotating the nut out by 3.6 degrees which as markjay said is a smidgen.

Oh yes... I was referring to a time when the only thing youl'd use a torque wrench for was head bolts, everything else was done by 'feel'.... (and even the head bolts were done using a spanner with an angles dial, not the modern wrench type). Mind, this was one reason why apprenticeships were taking far longer than todays quick training courses.

 

[alzieboy]

Thanks for the input Guys, think I will get the indie to have a look at this for me, things have moved on since I last carried out works on my own car

 

[Druk]

Thanks for the input Guys, think I will get the indie to have a look at this for me, things have moved on since I last carried out works on my own car

Good idea. They use special grease as well so maybe on the way out. A stitch in time?