I'm spinning off another to start this new thread. I replaced my center support bearing (2000 ML430) this past weekend and followed the guidance of this forum. I realigned the splines and went so far as to mark the shaft at the trans and rear axle, before reattaching. Unfortunately I have a slight shimmer only when I pull out (heavy load at 3+ rpms), sort of like driving over small rumble strips in the roadway. This does not occur once I get going or at high speeds, at least not 80mph. Looking back, the only thing I could think of is that perhaps I need to loosen the support bearing and make sure it is set to "exact center", not alot of movement or adjustment though, just 2 bolts. I remember tightening the support first and then the shaft. Perhaps I should have reversed this. Anyway, does anyone have input on this matter, I'm tackling this later in the week?

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Steve32

MB states that when the driveshaft support is tightened the car OR truck should be sitting on its wheels/tires.(drive-on rack)

IF you do that with the wheels hanging down then possibly the load on the driveshaft is incorrect.

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I believe all wheels were grounded, but not positive. Would you recommend I loosen all bolts, ensure all 4 wheels are grounded, and retighten?

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Steve32