Quote:
Originally Posted by D5 _Monkey
Have you checked the bolts into the end of the drive shaft (14mm head under the dust cap in the centre of the hub) these have a habit of coming loose. Some people describe it as a crunch when setting off, accellerating and decellerating, on mine it's more of a knock. Tightenning these bolts gets rid of it for a few miles then they come loose again. They usually need stud locking back in. (or evidently replacing with xc90 bolts that lock somehow?)
Can anyone with Vadis confirm the torque settings for these bolts or does it not give that sort of info? also can anyone confirm if the bolts on the XC are actually different (self locking) as my local specialist says they are not but I have read on here before that they are.
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Correct! This is a (common) fault with the driveshaft to wheel hub interface. Volvo describe the fault as “axle ping” – but sounds more like a dull thud, knock or clunk, The tightening and/or adding of stud lock adhesive only partly solves the problem, as eventually the dull thud, knock or clunk returns.
The XC90 driveshaft end bolts are the Volvo prescribed fix for this. The difference is the XC90 bolts have a rubber cone that essentially dampens the movement between the hub and the driveshaft.
The torque setting for these bolts is 50Nm.
This is a very simple and easy fix:
You will need 2 pcs P/N 30714142
With the car on the ground remove the centre caps
Remove the bolt (14mm socket)
Clean off any corrosion or contamination
Inert the bolt and tighten to specified torque.
(No stud locking adhesive required – as already applied to the thread)
Refit the cap and you are in business!