Wheel Bearings W166 - Mercedes-Benz Forum
 
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post #1 of 6 (permalink) Old 04-21-2019, 08:40 AM Thread Starter
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Wheel Bearings W166

Greetings,

This is my first post as a new member in this forum, by this means I see Hello to you members.
On the topic, has anyone needed to change wheel bearings in you W166? Mine is making the all too familiar growling.
I would like to replace it myself if it is possible, (any pointers pictures?). How much would this job cost at mechanic/dealer otherwise (I hear about $600)

Thank you

Carlos A.
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post #2 of 6 (permalink) Old 04-21-2019, 11:54 AM
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Welcome to the forum Carlos.
Are you 100% positive its a wheel bearing. How many miles on the ML?
I would think it would be unusual to have one go so soon. Lift the wheel off the ground and check nothing is dragging like a brake calliper or seized self adjuster.
Which wheel is it?


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post #3 of 6 (permalink) Old 04-21-2019, 04:40 PM Thread Starter
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Thank you Matt for your reply,

It is a 2014 with 80K miles.
I hear the hum which varies with speed (like others I had with a bearing issue) but to be honest I have not lifted the car and do the vertical shake to see which wheel is making the sound.
Just wanted to be prepared to what would come if it were to be a bearing.

Thank you again

Carlos
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post #4 of 6 (permalink) Old 04-22-2019, 01:50 AM
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Maybe check wheel alignment and or tyre wear. Feathering of the tread could create a bit of a hum.


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post #5 of 6 (permalink) Old 04-22-2019, 04:52 AM
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Hello, 2013 ml350 bluetec here sitting at 175 000 km (~110 000 miles if my math is good). The driver side front wheel was making the humming sound at about 60 km/h. I changed the wheel bearing myself (not that big of a job) and there was a big difference. I decided to change the front passenger one as well and now the difference is night and day. Absolutely dead silent drive.

I ordered both of my wheel bearing from Rockauto (stand replacement, don’t go for the economy ones). I highly recommend you order the whole hub assembly that comes with a new wheel bearing already installed (it was only 60$ more compared to just the bearing). I didn’t have a press to install the bearing so ordering a whole new hub assembly with a pre installed bearing and saving 1-2 hours of labour was a no brainer. If you go this route and do it yourself, you’ll have to find the correct torque specs to install the hub. I found them somewhere online but lost the link. I’ll post them here if I find them again or maybe another forum member with the numbers can post them.

Good luck!
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post #6 of 6 (permalink) Old 04-22-2019, 08:31 AM Thread Starter
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Thank you very much!!!
Indeed is is a time saver and also a safer route to go with the hub assembly (for 60 dollars a no brainer).
Which one did you choose MOOG or SKF?

Thank you for your time
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