I finally located the engine SN plate. It was covered with sludge. To my surprise its no a D333C as I was thinking. It is actually a 3306. Can anyone tell me what kind of equipment this came off of by the SN?

 

A 2P6806 is the engine arrangement for a d7F tractor s/n 94N5192 to 94N7184

Old wrote:

A 2P6806 is the engine arrangement for a d7F tractor s/n 94N5192 to 94N7184

Thank you Old Magnet. Wow, I really got lucky and scored a nice engine in this old 977H. It's sputtering and blowing white smoke a little bit but I am going through the entire fuel system and hope to get that figured out soon. So far, I have replaced the fuel line from the tank to the primary filter. The old copper line was kinked and leaking. I have also replaced the secondary fuel filter and cleaned out the primary. I am waiting on new injectors and will replace those soon.

Interestingly, whenever they swapped out the old engine and put in this 3306 it appears that they kept the old exhaust elbow and turbo elbows from the original engine. I guess they didn't want to mess around with cutting a hole in the hood for a different exhaust location. This resulted in a couple of things. Currently, the exhaust side of the turbo doesn't make a solid connection with the exhaust elbow. Oil and smoke and blowing out at this point. Also, the elbows on the intake side of the turbo don't make a solid connection at the point where they connect to the head. I can literally see a gap where the elbow meets the connection point of the head where 4 bolts attach. I know this isn't ideal and that dirty air effectively bypasses the filter right here, but do you think this could be part of the reason it is sputtering and blowing some white smoke?

Any info is greatly appreciated.

Today I dropped the front belly cover so I could drain the engine oil. After I scraped away all the many years of goop, I located where the oil drain plug should be. However, I just saw threads where a plug should be, but no plug. I could stick a screwdriver in the hole about an inch and it Hits something solid. What am I missing here? Is it possible that this drain plug location is blocked from the inside of the oil pan? If so, should there be another drain location somewhere? The 3306 engine in this 977 came out of a D7F. Any guidance is greatly appreciated.

There should be a 9/16" socket size fitting on the side opposite side of that fitting that you loosen to allow oil to drain from the pipe. You don't have to drop the belly pan to change oil.
Craig

Thank you for the reply. There was nothing screwed into the threads and I didn’t see a 9/16 head in the hole. I will go check again to make sure I wasn’t missing the plug head. You must be reading my mind. I was thinking about just dropping the oil pan.

Look under the oil filter should be a plug on the side of the pan.
Bob

Thanks guys! I found it. I was originally looking up from the bottom into the hole with threads on it, but the plug screwed in from the side, and the head was covered in goop

I got the oil changed in the old 977H yesterday and it runs a lot better. The old oil in it was so thin that it had a consistency more like diesel than oil. The engine had low oil pressure with the old oil in it and now the oil pressure is fine. Interestingly, the fuel pressure stays all the way pegged out on high even when it idles. Again, this is a 3306 engine that someone put in from a D7F donor machine. The SN is 3N917 and the arrangement number is 2P6806. I have replaced the secondary fuel filter and thoroughly cleaned out the primary. I've also replaced 3 of the injectors and will be replacing the remaining 3 soon. Any suggestions on things I can look for that might be causing the high fuel pressure? She also occasionally sputters and blows a little bit of white smoke. Otherwise, she sounds pretty good.