we had a cat twin turbo in an international 7600 run away at my work one day. truck came in because it started to run away one day on the customer, but they got it shutdown somehow. So the tech who was working on it changed the first turbo, which was pushing oil. Now this was a seasoned tech, who had about 20 years of wrenching under his belt. He got it all buttoned up, but never cleaned the oil out of the charge air cooler, nor did he check the other turbo for pushing oil. He started it up, backed it out of the shop, and let it run on high idle while he cleaned up his tools and such. A minute later she started slowly revving up and just kept on going. The more it revved up, the more oil that turbo pushed into the intake and it kept running faster and faster. the tech made an attempt to get a rag in the intake but it was too late. Nobody could do a thing except stop what they were doing and watch. The motor came apart and he wound up putting a reman engine in the truck under warranty lol
actually he is now service manager lol...but yeah i'm not sure if he was just rushing to stay under the warranty time or what, but it was def. a costly mistake. :doh:LOL he must not have been that smart...to have that much experience and not clean the charge air cooler, intake tubes and at least check the other turbo???? lol i bet he had a nice front office meeting LOL...
most of the old 2 cycle detroits ran away not because of the turbo pushing oil, but the "rack" that operated the injectors could stick, or if the person setting the overhead or "rack" if you will did it wrong and they would ramp to full fuel like...right now lol and the only way to kill her is to suffocate it.Some detroits were known for this...there is a Oliver tractor in the hot farm circuit with an old detroit around here that everyone is scared of because they think it will run away lol
There is a story out out of the local tech school that some kid assembled an oil pump wrong and the engine ran away, instructor put a clip board on it and it sucked it in lol
Happens with some old lawn mowers too
That motor is probably toast after having fire extinguisher spray sprayed into it.Here yall go!! I was at this pull in DeLeon when this cummins blew the intake o-ring and started to run away. I was standing on the same side as this but behind it. You can see them shoving shirts into the intake but they eventually killed it by shooting a dry chemical fire extinguisher into it. I will try to get my vid up.
YouTube - DeLeon TX - Friday, August 7, 2009 - Chris Ryan