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Reply to "EMD E9 major design difference questions"

PRR 5841 posted:

I was pretty certain I knew the answer to my first question but am delighted for someone to answer so emphatically on the second.  HW, if I’m not asking too much, could you please expound on your response to my second question?  

Way too complicated to list here. You might want to purchase some old EMD Engine Manuals off eBay, but here are just a few of the most important changes from the 567B to the 567C:

1) The cooling water for each cylinder liner was changed from being supplied from the lower crankcase deck to & thru the lower portion of the liner, to a seamless steel water manifold inside each air box. Water jumpers attached to the water manifold supplied water to each liner, just below the air intake ports. The result was the elimination of constant lower liner seal water Leakes directly into the lube oil in the oil pan.

2) Improved piston tin to connecting rod connection. Previous to the "C" series, each connecting rod had a fully floating piston pin inside the sleeved "eye" top of the connecting rod. The new "C" design eliminated the "eye" of the top of the connnecting rods, and replaced it with a small support saddle for the piston pin, which was then bolted to the top of the connecting rod. The piston carrier had a simple sleeve "shell" beating which mated with the top of the piston pin.

I have no idea what the actual differences were between the different 567 versions, I’ve always assumed it referred to internal changes like improved oil flow, larger cooling capacity, different firing order etc.

Again, I suggest you obtain some older EMD engine manuals. They have lots of drawings & pictures.

 

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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