Steve and Denise
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It might instantly become a permanent loan if it works......Can you loan your drivetrain to para pilot for a week ?
Excellent, thanks. I couldn't find anywhere that had a truck sized rolling road.i was chatting to some one from Doncaster about this and he said there is a transmission guy near the Merc gararge who has a rolling road for diagnosing such problems on larger vehicles he said he would send me the number after the weekend.
If he does I will post it on here.
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Reference the diagnostic tool mentioned, I was offered this equipment, in the U K, just before illness forced retirement. At this moment I can't remember who offered it, I don't think it was Snap on or Mac tools but I'm sure it was a mainstream supplier. Can't find through internet but have emailed an ex colleague if I get a positive response will post.At some point, shouldn’t you get some other type of experts involved: Mercedes Management, Mercedes Public Relations, Trading Standards, Twitter - anything to get those that should know how to fix it to get their a55es into gear and fix the problem.
However - here’s a long shot.
During research into my own problem (mentioned earlier - differential) I came across a diagnostic tool which may only be available in the US, but...
This was a device which recorded all the vibrations made by the vehicle whilst driving through all stages - low gear to high, back down again. Accelerating, decelerating, braking. The resultant waveform is analysed and broken down to frequency bands. For example, at a particular speed and gear, vibration frequencies can be determined for camshaft, valve train, crankshaft, pistons, gears, propshafts, UJs, differential gears, wheel bearings... As the driving regime changes (load / no load, accelerating / decelerating) the waveforms may show that eg a wheel bearing is rumbling, or that the second gear cogs are the problem.
Has anyone come across this in the UK?
@CazPaul i appreciate not much history with vehicle but you would have heard the issue when purchasing I’m guessing.
Hence why I’m wondering if it’s happened since purchase.
This is really intriguing me.
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exactly my thoughts to much backlashThe diff has a fair amount of back lash could it be the noise coming back up the rear prop as you say it is a metallic sound.
We had a new steering rack fitted to a 2 year old 28,000 mile car by Mercedes only to have another one fitted a week later.
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Try this stuff. It is fantastic. I had a shuddering autobox on my 2007 discovery, put one of these in and it disappeared with a couple of minutes and has never returned. I cannot recommend it highly enough and it is cheap and easy to put in so even if it doesn't work it was worth a try. I suspected prop shaft, centre bearing, gear box, all sorts but this stuff fixed it. Give it a go!
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