Seized engine? Need some advice.

[Kernopelli]

Well, tried to lay down before work and there was no way I could sleep....I had to see those bearings. The bearings didn't "fall off" but it didn't take much effort at all to remove from journal. The split was easily reached with a screw driver and I pushed the blade into the split between bearings and they pulled away from the journal easily and fell through the bottom end.

I got the bearings from the goo catch pan and they are not good, they are galled and you can see that the bearing just barely started to spin.....like +1/2 revolution. I had my son rotate the crank while I shined a bright shop light down the bore and the crank has some light bearing material "welded"(?)on one side and is discolored and/or lightly scratched just about all the way around.

 

[Don87]

Well, now we know what caused it to seize.

Time for some crank work, and bearings.

 

[Kernopelli]

Piston, rings, cylinder looks perfect.....or as perfect as you could ever expect a 1400 hr to look but it's all pretty darn good. Honestly, didn't even "look" (examine) at head yet....didn't see the need but will.

 

[Don87]

Piston, rings, cylinder looks perfect.....or as perfect as you could ever expect a 1400 hr to look but it's all pretty darn good. Honestly, didn't even "look" (examine) at head yet....didn't see the need but will.

We know you need the 'bottom end' done at least. Might not hurt to think about going farther if you are going to keep the machine.

 

[whodat526]

Well, tried to lay down before work and there was no way I could sleep....I had to see those bearings. The bearings didn't "fall off" but it didn't take much effort at all to remove from journal. The split was easily reached with a screw driver and I pushed the blade into the split between bearings and they pulled away from the journal easily and fell through the bottom end.

I got the bearings from the goo catch pan and they are not good, they are galled and you can see that the bearing just barely started to spin.....like +1/2 revolution. I had my son rotate the crank while I shined a bright shop light down the bore and the crank has some light bearing material "welded"(?)on one side and is discolored and/or lightly scratched just about all the way around.

if its not to bad you can use emory cloth to get it clean i have done it many times

 

[Don87]

if its not to bad you can use emory cloth to get it clean i have done it many times

The crank looks pretty rough after blowing up the picture. But pictures can be deceiving at times.

 

[Garybake]

Take a pipe cleaner and run it through to main cap feed. That rod quit getting oil for a reason and spun. Rarely will bearing tab allow spin and lack of oil. Too many hours to have isolated rod bearing problem. I would check rod / piston pin float and rod straightness from a previous hydraulic lock to that cylinder. Some trauma from another source. That much material loss is embedded in all other bearings and pump gears. Sorry for depressing news.
Total disassembly required but take time now and be a good detective. You need to know why. Keep us posted. PS (I do not believe an idle will not eat up that much bearing shell side wall)
Gary

 

[Kernopelli]

The crank looks pretty rough after blowing up the picture. But pictures can be deceiving at times.

I was actually wondering about the emory cloth. It really appears to be material deposited on the crank and something that almost appears to look like adhesive. I really don't think much if any of the scoring is in the crank but is actually smeared material or scratched in deposited material. The pic didn't do it justice at all, very hard to get a good pic, I took 5 and that was the best one.

 

[Don87]

I was actually wondering about the emory cloth. It really appears to be material deposited on the crank and something that almost appears to look like adhesive. I really don't think much if any of the scoring is in the crank but is actually smeared material or scratched in deposited material. The pic didn't do it justice at all, very hard to get a good pic, I took 5 and that was the best one.

You can try the emory cloth.........nothing beats a try but a failure.

But as Garybake said, you need to find out why oil stopped flowing to that rod bearing.

But be sure to take the rest of them off and check for wear.



EDIT: You have a few 'chunks' on the crank. If you do it carefully, sometimes those chunks come off relatively easily with a tiny screwdriver. Do this before the emory cloth, things go faster that way.

 

[Hooked_on_HP]

As Garry said I don't think all the damage occurred while it was idling. You were just lucky that it was idling when it finally seized. I would look at the rest of the rod bearings. The uppers will have the most wear. If all the uppers are wore thin the engine has been lugged a lot. If it were mine I would have the crank turned. Cranks are micro polished to prevent wear. Emery cloth will scratch the crank. If it were an old beater I would say try the emery cloth. In your case I would want it done right so it would be as dependable as new. Talk to a local reputable machine shop and see what they say. If you don't know of one ask you tractor dealer who they use.
Bill