From: ahk@chinet.com   
      
   mroberds@att.net wrote:   
   >Adam H. Kerman  wrote:   
   >>mroberds@att.net wrote:   
      
   >>>Or if somebody in a shop had realized that JB Weld (or similar)   
   >>>wasn't the best product to use on the camshaft bearing housing of a   
   >>>3,000 hp diesel engine.   
      
   >>How? They thought overtightening the housing around the bearing was   
   >>the correct procedure for stopping the oil leak. Surprise, surprise:   
   >>The bearing cracked.   
      
   >The main report (TSB Canada R13D0054) links to a lab report (TSB Canada   
   >LP181/2013) that has more detail about this.  Section 2.3.5 of the lab   
   >report has photos:   
   >http://www.tsb.gc.ca/eng/lab/rail/2013/lp1812013/LP1812013.asp   
      
   >The original problem was that part of the casting around the cam bearing   
   >bore broke away.  This is part of the engine casting - maybe "housing"   
   >was a poor description on my part. . . .   
      
   I understood what you meant. I was questioning the reasoning of the shop   
   that thought that this could possibly be a permanent repair. Instead of   
   fixing it in any way, a hell of a lot more damage was done.   
      
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