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  #1  
Old 05-23-2010, 02:13 PM
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Wheel bearing or otherwise?

I bought my first mercedes diesel recently. Its a 1985 300d w/ turbo. I paid 1200 for it, its ugly as sin and I plan on driving it 'till it don't drive no more; with as little maintenance as possible.

Anyhow, The car makes a sort of thud thud sound from the left wheel when making hard right turns. I'm no professional but, it sounds like a wheel bearing to me. The PO said it started happening after he got new rims put on it (why would anyone do that?). He thought it was some sort of mis-installation, but like me he was broke and the car still rolled so he never looked into it. Is his story feasible or is it probably just a wheel bearing or axle problem?

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Old 05-23-2010, 02:18 PM
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Originally Posted by soulbandaid View Post
<> I plan on driving it 'till it don't drive no more; with as little maintenance as possible.
The former will come quickly as the result of the latter.

A 25-year-old Mercedes diesel in rough condition will consume maintenance with an amazing hunger.
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Old 05-23-2010, 02:44 PM
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Originally Posted by soulbandaid View Post
I bought my first mercedes diesel recently. Its a 1985 300d w/ turbo. I paid 1200 for it, its ugly as sin and I plan on driving it 'till it don't drive no more; with as little maintenance as possible.

Anyhow, The car makes a sort of thud thud sound from the left wheel when making hard right turns. I'm no professional but, it sounds like a wheel bearing to me. The PO said it started happening after he got new rims put on it (why would anyone do that?). He thought it was some sort of mis-installation, but like me he was broke and the car still rolled so he never looked into it. Is his story feasible or is it probably just a wheel bearing or axle problem?
Well, that's a dumb idea. That's what Chevy Cavaliers are for, not quality diesel MBs. Maintain the diesel and it will last you, but without it, won't last long at all.

In terms of the problem, thudding isn't common. Look to make sure the wheel isn't hitting anything when it's fully turned. While you're at it, you should probably check the suspension bushings and ball joints. Is the sound rhythmic, or does it just happen once or twice per turn?
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Old 05-23-2010, 03:13 PM
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Its rhythmic. I looked into a little more and it happens when the suspension compresses on a hard right turn (the sounds from the left). But not when i make a sharp right turn at low speeds.
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Old 05-23-2010, 06:37 PM
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You could remove the wheel from the suspected side and see how much end play the Wheel Hub has.
While the Wheel is off take a look at the threaded ends of the Lug Bolts and see if they have been hittin anything.
And, take a look at the inside of the Rim to see if it is hitting anything.

There have been instances when members changed their Rims that the Lug Bolts were too long for the new Rims and protruded and hit somthing.
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Old 05-23-2010, 06:55 PM
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CV joints on the rear axle?
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Old 05-23-2010, 07:06 PM
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Originally Posted by babymog View Post
The former will come quickly as the result of the latter.

A 25-year-old Mercedes diesel in rough condition will consume maintenance with an amazing hunger.
Agreed.

The OP bought the wrong vehicle.
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Old 05-23-2010, 07:09 PM
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A little wheel bearing rumble ain't nothing to worry about if your going to drive it as you plan.
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Old 05-23-2010, 07:27 PM
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A little wheel bearing rumble ain't nothing to worry about if your going to drive it as you plan.
good point

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