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Old 5th Dec 2010, 19:13
  #108 (permalink)  
Join Date: Jul 2007
Location: West Sussex
Age: 78
Posts: 56
bearfoil - I choose my words carefully, and I try not to give offence and avoid sarcasm. Also I try not to be light hearted but it's a bit difficult when faced with some posts.

But to get to your point.

No, I don't think the offset counterbore is wear, the surface is too uniform. It appears to be a false cut during manufacture.

I do not understand the geometry of the component as depicted in the photo, and I have no idea of the mating parts and surrounding scenery. Hence I find myself unable to comment.

Oh, all right, then, the stub pipe could be an integral part of a housing casting, in which case the counterbore could have been done on a boring machine. An accidental offset of the spindle would have done the trick.

I honestly think we need more information such as a detailed GA or the relevant pages of the Overhaul Manual before we can get down to informed speculation.

I do not believe there is any fancy aspirator type device involved. The counterbore looks tailor made for a pair of O rings. I would not expect lubrication to be by means of a mist. Oil jets more likely.

As Iomapaseo often says, we should leave the real professionals, Investigators, RR and so on to get on with the job. I have no doubt that they will do a terrific job.

Trouble is, I find it impossible not to respond to some of the more extreme imaginings found on here.

Oh, and can we be a bit more careful with the vocabulary please, and only use terms that are recognised in the Trade.

Last edited by CAAAD; 5th Dec 2010 at 19:17. Reason: comedian
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