Quote:
Originally Posted by mb201
Yes i found the dial, but thinking it must be very low on the torque? how about using a strap around the pinion for about 5times and have weight on the end, check how much weight i need to turn pinion? Thinking it maybe better option with diff. in car. Is there no one selling the friction instrument that MB use?
Yeah it was in my mind about the hardness of the pinion, have been reading the procedure from MB. Its not the cost of the nut that is problem, but thinking its the easy way of fixing this and most "accurate" with old nut back to same position. And if i have one more peen + loctite +180nm it must last for a while, iam not racing with this car. Maybe check the nut from time to time.
Thanks for reply and sorry for my bad english..
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Any tool sold by Mercedes comes at a premium! I have spent a lot of time trying to avoid the use of Mercedes tools for this reason - it has almost turned into a new sport for me...
...strap and weight might work - give it a go. But this method needs to be repeatable and reliable. If you mess it up then you kill your differential => the gears will wear unevenly and you'll never get it to be quiet again.
Checking the nut is not really plausible with out removal of the propshaft - not really a regular service interval kind of a thing.
Note also the 180Nm tightening torque might not be what is needed. It could be less because the crush spacer / washer between the two bearings on the pinion shaft has already been compressed =>
On a new installation - with a new crush washer / spacer - the torque needed to compress this spacer is immense (this is why I was starting the crushing process off with a hydraulic press). You are not going to need such a high torque to nudge the nut up against the crush washer a second time (which is essentially what is happening with the seal replacement procedure). If you over tighten the crush washer during this process the friction in the pinion bearings is too great - and the little bearing will probably fail (it is little and has a lower lifetime expectancy)