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Tool Talk Discussion Forum

reclaiming a Detroit Diesel 53 series crank

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Rob Johnson

12-27-2003 01:26:22




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If I were to have a DD 53 series with a well worn crank , what would be the best way of reclaiming it ?.




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EIL

12-28-2003 00:44:40




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 Re: reclaiming a Detroit Diesel 53 series crank in reply to Rob Johnson, 12-27-2003 01:26:22  
I did once have to change the crank on a david brown 1210 because it had been ground to .030" and the heat from grinding it caused one of the throws to crack and fail.



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jdemaris

12-27-2003 19:38:52




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 Re: reclaiming a Detroit Diesel 53 series crank in reply to Rob Johnson, 12-27-2003 01:26:22  
I'm not sure I understand your question, but if you're talking about journal wear, either have it ground undersize, or spray welded and ground back to standard size. Either way, no big deal.



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Rob Johnson

12-27-2003 19:47:47




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 Re: Re: reclaiming a Detroit Diesel 53 series cran in reply to jdemaris, 12-27-2003 19:38:52  
I was wondering what were the different techniques used , how they relieved stresses etc. I don't even know what was used on a DD 53 crank , and how that effects techniques used , and the success rates. Regards Rob Johnson



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jdemaris

12-27-2003 20:06:25




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 Re: Re: Re: reclaiming a Detroit Diesel 53 series in reply to Rob Johnson, 12-27-2003 19:47:47  
I've rebuilt a lot of diesels, mostly John Deere but also a number of 2-53, 3-53, a d 2-71 Detroits. Usually, if they had to go smaller than .020" undersize, we had them spray-welded and ground to standard. I don't understand why a conventional crank regrinding requires stress-relief. Perhaps after spraywelding, but I've never heard anything about it. They'd get magnafluxed and checked for stress-cracks, but that's about it. As far as cranks go, I've never had any problems or failures that related to regrinding or spraywelding. Had a few Chevy 6.2 diesel cranks break, but that had nothing to do with rebuilding.

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buickanddeere

12-27-2003 19:30:17




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 Re: reclaiming a Detroit Diesel 53 series crank in reply to Rob Johnson, 12-27-2003 01:26:22  
If it's just the crank ends, a Speedi-Sleeve works great.



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EIL

12-27-2003 02:51:50




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 Re: reclaiming a Detroit Diesel 53 series crank in reply to Rob Johnson, 12-27-2003 01:26:22  
You could get it shaved .010", .020", or .030" depending on how bad it is worn or if it is scratched or gouged. Is this a 3 or 4 cylinder? I had torn appart, put back together, and got running a 4-53 detroit at vo-tech school a few weeks ago and am sceduled to overhaul a farmers 3-53 pretty soon so if you have any questions, I might be able to help you!!!!! !!!



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