The Center-Lock recall...
07-19-2011, 03:27 PM
#121
At the end of the day, I have concluded on two demonstrable facts:
If the spline mechanism will not automatically extend into the centerlock wheel nut once the nut is at 600Nm -- following the newly documented procedure this year -- without significant effort on the part of the person mounting the wheel, the system has failed.
If the spline mechanism then binds into the centerlock nut once the vehicle is driven, such that it cannot allow the insertion of the wheel nut socket tool without considerable effort, then the mechanism has failed.
Since I continue to encounter both these situations after the recall, I think it's reasonable to conclude the centerlock assembly is prone to failure and the fundamental design must be subjected to rigorous and effective revision.
If the spline mechanism then binds into the centerlock nut once the vehicle is driven, such that it cannot allow the insertion of the wheel nut socket tool without considerable effort, then the mechanism has failed.
07-19-2011, 03:56 PM
#122
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At the end of the day, I have concluded on two demonstrable facts:
If the spline mechanism will not automatically extend into the centerlock wheel nut once the nut is at 600Nm -- following the newly documented procedure this year -- without significant effort on the part of the person mounting the wheel, the system has failed.
If the spline mechanism then binds into the centerlock nut once the vehicle is driven, such that it cannot allow the insertion of the wheel nut socket tool without considerable effort, then the mechanism has failed.
Since I continue to encounter both these situations after the recall, I think it's reasonable to conclude the centerlock assembly is prone to failure and the fundamental design must be subjected to rigorous and effective revision.If the spline mechanism then binds into the centerlock nut once the vehicle is driven, such that it cannot allow the insertion of the wheel nut socket tool without considerable effort, then the mechanism has failed.
I fully agree with you that the design is not optimal, nor even close to what one might call elegant. The splines always freeze up on me when I come in off track. I've got to whack them with a pin and a mallet to free them up (otherwise, the CL socket won't fit over the nut). And it's a PITA to jiggle all the splines to get them to pop out so that the safety mechanism actually works. I ended up making a special tool for this job (a long bolt with a handfull of nuts threaded on it to give you something to grip as you fiddle with it).
I fully expect more from Porsche!
07-19-2011, 04:49 PM
#123
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At the end of the day, I have concluded on two demonstrable facts:
If the spline mechanism will not automatically extend into the centerlock wheel nut once the nut is at 600Nm -- following the newly documented procedure this year -- without significant effort on the part of the person mounting the wheel, the system has failed.
If the spline mechanism then binds into the centerlock nut once the vehicle is driven, such that it cannot allow the insertion of the wheel nut socket tool without considerable effort, then the mechanism has failed.
Since I continue to encounter both these situations after the recall, I think it's reasonable to conclude the centerlock assembly is prone to failure and the fundamental design must be subjected to rigorous and effective revision.If the spline mechanism then binds into the centerlock nut once the vehicle is driven, such that it cannot allow the insertion of the wheel nut socket tool without considerable effort, then the mechanism has failed.
This is all a conspiracy.
The old school Weissach, you know the real engineers that still work there, are getting back at the marketing department, for imposing the CL wheels in STREET cars.
Now they happily walk the corridors and exchange with each other faint smiles.
