Excesssive Vibration
I was wondering if somebody could advise me about some excessive vibrations in my G Class.
I had a “SM2161, OIL COOLER CAMPAIGN” on 15 April 2016 carried out and since then the "G" is suffering from this excessive vibration. It is more pronounced when standing at an intersection, with my foot on the brake. The vibration is not a rattle, but a vibration which is transferred to the steering wheel, foot pedals and the center armrest. It does not seem to effect the passenger as much as the driver.
Mercedes Melbourne have been very cooperative, but I would like to be well rehearsed before I push the issue.
Thanks in advance for any advice offered.
Cheers
Wolf
steering damper is a common fault, does it get worse at 50-60 mph, if it does it confirms this as a diagnosis, but if its at idle it could be an engine mount, what's the engine in your truck
A 6 cylinder unit shouldn't vibrate much at all my petrol won't spill a cup of tea placed on the slam panel, I'm assuming yours is a straight six so it should be pretty good too. I'd get underneath with the engine on, gear box in park or neutral hand brake on and using a torch try and see where the excess vibration is coming from, either that or send it back to the dealer/specialist to sort as this is not an old vehicle and this oughtn't to be an issue.
If nothing is visible or it seems that the mounts are moving in unison its most likely a problem with the engine, yours is a V6 not an inline unit as I previously suggested, not as inherently smooth as an inline unit but with a single balancer shaft to compensate for vibration from the two 3 cylinder banks placed in centre of the V. If this is the problem its a main dealer for you
Hello,
There are two types of vibration: One, as mentioned above, when traveling at 50 - 60 mph, which is commonly due to wheel balancing and possible worn steering damper.
The other type of vibration, as you are experiencing at standstill, is likely due to worn engine mounts, particularly on a diesel.
Check the engine mounts (and transmission and transfer-case mounts).
The V6 diesel (OM642) that you have relies on some very sophisticated fluid-filled mounts to keep things smooth.
There have been many reports of failed OM642 engine mounts
(Also, for the sake of completeness, if you feel a pulsing vibration when braking from 40 mph or higher speed, your front wheel bearings may be loose or worn, allowing too much axial play.)
I agree with Arnie on this but to expand given the vibration is felt on the driver's side; I would suspect the driver's side engine mounting firstly.
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Cheers
Wolf