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Interesting article about bearing failures

Posted: Mon Jul 01, 2013 7:03 pm
by MarkyB
http://www.studebaker-info.org/tech/Bea ... -3-402.pdf
The stuff about fuzz and crank journal polishing was news to me at least.

Re: Interesting article about bearing failures

Posted: Sat Jul 06, 2013 7:56 pm
by Cam
Absolutely brilliant, especially the pictures so we can compare to see what failures we have.

Thanks for that! :D

Re: Interesting article about bearing failures

Posted: Sun Jul 07, 2013 4:33 am
by katy
Thats a good one, thanks Marky. :D :D

Re: Interesting article about bearing failures

Posted: Sun Jul 07, 2013 10:26 am
by smithskids
Good article, when I retired I had a job adjusting to small engines. Here are some larger failures :([frame]Image[/frame][frame]Image[/frame][frame]Image[/frame][frame]Image[/frame]at least on our engines we don't need a crane to lift the crank out!!!!

Re: Interesting article about bearing failures

Posted: Sun Jul 07, 2013 4:14 pm
by katy
Here's a Cummins diesel that a connecting rod broke. It was running at 1800 RPM under load. It even knocked the cast aluminum sump off.[frame]Image[/frame]

Re: Interesting article about bearing failures

Posted: Sun Jul 07, 2013 8:07 pm
by MarkyB
Blimey Smithskids, what did the damage to the crank journal, a meteorite?
The bent con rod doesn't look very well designed, is that why it's separate to the big end?

Re: Interesting article about bearing failures

Posted: Sun Jul 07, 2013 8:59 pm
by smithskids
Hi MarkyB, the interferance fit of the con rod bush wasn't right causing fretting hence cracks. bingo the rod let the piston drop then spun round, cut the engine almost in half then snapped the bottom end bolts. :cry:

Re: Interesting article about bearing failures

Posted: Sun Jul 07, 2013 9:39 pm
by JOWETTJAVELIN
Very interesting, thanks for posting. And those larger engine failures!! :o