iko
Member
Hello everyone, I've been reading a lot this forum, what a great source of information and helpful people. This is my first post.
The short of it is, I think I need to overhaul cylinder 1. But I don't know which sleeve and piston kit to order, there seems to be two different sleeve types, one with 5.092" TO 5.097" FIRE DAM DIAMETER SLEEVE, and the other with 5.189" TO 5.194" FIRE DAM DIAMETER SLEEVE. Is there a way to know which to get perhaps according to the serial number, or year of fabrication? This 680E I think it's a 1977 production.
Got a 680E this past winter for what I thought was a decent price but without any experience with diesel engines or this machine in particular. PO said it all works except for "a little blowby". Famous last words, as they say. Addressed some clear problems right away. The fuel transfer pump was leaking a lot of diesel into the crankcase, replaced the pump and at least the crankcase no longer got filled up with diesel.
The biggest problem it has now is that there's zero compression on cylinder 1. Tested for this because it seemed to me the engine wasn't running as smooth as it should, and cracked the injector lines one by one. Numbers 2,3, and 4 when cracked, change the way the engine run noticeably, but nothing changed on number 1. Then I got a diesel compression tester and checked each cylinder. Compression wasn't great on 2,3, and 4, but on number 1 it was zero, the tester dial didn't move at all.
Tried to see what's going on with a bore scope, and I think part of the cylinder is missing. Here's the video made with the bore scope.
Any help is appreciated.
The short of it is, I think I need to overhaul cylinder 1. But I don't know which sleeve and piston kit to order, there seems to be two different sleeve types, one with 5.092" TO 5.097" FIRE DAM DIAMETER SLEEVE, and the other with 5.189" TO 5.194" FIRE DAM DIAMETER SLEEVE. Is there a way to know which to get perhaps according to the serial number, or year of fabrication? This 680E I think it's a 1977 production.
Got a 680E this past winter for what I thought was a decent price but without any experience with diesel engines or this machine in particular. PO said it all works except for "a little blowby". Famous last words, as they say. Addressed some clear problems right away. The fuel transfer pump was leaking a lot of diesel into the crankcase, replaced the pump and at least the crankcase no longer got filled up with diesel.
The biggest problem it has now is that there's zero compression on cylinder 1. Tested for this because it seemed to me the engine wasn't running as smooth as it should, and cracked the injector lines one by one. Numbers 2,3, and 4 when cracked, change the way the engine run noticeably, but nothing changed on number 1. Then I got a diesel compression tester and checked each cylinder. Compression wasn't great on 2,3, and 4, but on number 1 it was zero, the tester dial didn't move at all.
Tried to see what's going on with a bore scope, and I think part of the cylinder is missing. Here's the video made with the bore scope.
Any help is appreciated.