Fishing Expedition/Harmonic Recall - Mercedes-Benz Forum

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post #1 of 5 (permalink) Old 12-14-2005, 05:48 AM Thread Starter
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Fishing Expedition/Harmonic Recall

So I take my E320 in for the HB recall and the dealer calls me back 3 hours later and tells me he has found $2000 worth of other work that must be done. Says the front brake disks are out of spec. I mention that the brakes were just replaced 25k ago. He says, oh, well by the way we could not get the front wheels off the car because the lug nuts are stuck. So I asked him how he mic'ed the front disks if he couldn't get the front wheels off. Oh we have a special tool for measuring disk thickness with the wheels still on the car.

Sounds like total BS to me. Anyone ever hear of this "special tool"? (part number CYA-13 :) )

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post #2 of 5 (permalink) Old 12-14-2005, 06:09 PM
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RE: Fishing Expedition/Harmonic Recall

Depending on the wheels, sometimes you can get a micrometer on the rotor to get a good measurement. it sounds like the wheel lug bolts were over torqued last time. They can be very difficult to remove without breaking the bolts on the 210 body. That's why if you buy replacement bolts at the dealer they are shorter - so the don't have as much to twist and break. If one breaks, it's not fun to get out without damaging the wheel.
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post #3 of 5 (permalink) Old 12-14-2005, 09:29 PM
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RE: Fishing Expedition/Harmonic Recall

Hi, Sr.

It is possible that if the bolts were truly overtorqued then that can contribute to premature rotor replacement (typically warping or coning).

In some applications it is possible to mic the rotors without removing the wheel.

That said, dealers (of all makes) haven't earned their less-than-stellar reputations by being 100% honest, so it's possible you're being bamboozled.

Personally I'd ask him to please replace the HB and you'll have to defer on the brakes now because it's Christmas. Then either take care of it yourself or find a good independent.

Take care and enjoy the ride,
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post #4 of 5 (permalink) Old 12-16-2005, 08:57 AM
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Optimal torque?

I had my winter wheels put on yesterday and noticed the guy torquing the bolts to 90 lbs. I asked him if there was a specific/standard torque that should be used and he said probably, but he could usually tell w/in 5 lbs. what a wheel should get. They torqued my summer wheels to 85 lbs. but I was wondering if MB has specs on that somewhere? Does anyone know?
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post #5 of 5 (permalink) Old 12-16-2005, 09:49 AM
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RE: Fishing Expedition/Harmonic Recall

the thing that always amuses me with dealers is that they can't find a single problem with the car if it's under warranty, and the minute you out - they just want the rights to your savings account

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