Metal and liner chunks in engine

[c.i.h.303]

We started tearing into our 2014 8230 combine for its overhaul and found some small metal pieces in the oil filter. A quick look inside revealed a few troubling things!! We found what looks like some brass, likely from around a wrist pin, along with what appear to be wrist pin snap rings. The most concerning part is some larger, very polished chunks of metal, broken off the bottom of the liners. It was honestly hard to believe that the engine still runs and drives well, given what we've found!!

I'm really trying to understand how these snap rings could have come loose and escaped, especially if more are doing the same. Also, how do liner chunks break off like that? They look like they've been rattling around for a while. I've worked on an Iveco engine before and don't recall seeing brass in the piston pin area, so that's a new one. My gut feeling is either improper snap ring installation or possibly incorrect size rings were used initially??

Looks like another rebuild is on the horizon, but I'm keen to understand the root cause here. Has anyone else experienced anything similar with these Iveco engines, particularly with snap ring or liner issues? I'm determined to fix the problem, not just the symptoms, and prevent this from happening again. Any insights would be greatly appreciated!!

 

[Mr Rhino]

If those snap rings came loose, there's a chance this engine was rebuilt before with off-spec or poorly installed parts. Some shops cut corners, and what you're seeing might be the result.

 

[engine&earth]

Okay, so much debris usually means something big went wrong inside, probably overheating or oil problems that made the snap rings loosen and the liners crack. Some Iveco engines do use brass bushings. It could be the wrong snap ring size or how it was put in, but usually, it's because of cooling problems causing heat issues. Before you fix it, check for blocked coolant, a bad head gasket, or oil pump trouble.