Just thought I would let you know that I have recently sorted out a knocking
that my W reg A140 had developed. The knock was mainly heard when going over
pot holes/drain covers or around sharp bends. On jacking up the rear of the
car I detected about 4 mm play when pulling/pushing on each wheel which led
me to think that the bushes/bearings at the front of the trailing arm were
A visit to my local Merc dealer showed that the arms are fitted with a taper
roller bearing set up which they insisted was a case of fitting replacement
complete trailing arms.However, bearing repair kits were shown on their
parts computer and I have now fitted same and all knocking noises have
The good bit- they wanted £480+vat and 4 hours to do the job.I did it for
£48 total and 6 hours graft.
On asking them about why a just over 3 year old car/30k mileage, had
developed such a fault I was told it was "unusual".Makes you wonder just how
many A Class cars have had such a problem!
Do u live anywhere with a lot of speedbumps?. They can wreak havoc
quite quickly in areas of the car that it comes out of the showroom in
and goes to the scarp yard with. i.e should last forever.
I understand that the growth in wheel bearing replacements due to more
speed bumps is relative.
A thought anyway... Rob.
My wife has the same problem, has been fixed five! times within 100kkm. My
mothers A has the problem also. It is well known at least to the German
dealerships and usually fixed for free (at least parts). On both As the door
hinges are coming apart now..... Really lousy engineering is you ask me.
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