D8N Engine Seized

[Hunter013]

D8N 9TC03863

Was pushing piles with it no problem, machine sat for a day or two, now the starter clunks and won’t spin, like something is holding the engine back. I took the starter out and it spins just fine away from the flywheel. I cannot turn the engine over with a barring tool. I was going to start disconnecting pumps to see if they might be holding it back. Is there something else I should check?

 

[Labparamour]

Folks talk about hydro lock- pull injectors and try barring over and see if/what comes out.
Injector could have failed and leaked down

 

[Nige]

Is either the oil or coolant level low.?

Before starting to mess with pumps pull the injectors as a first step and see if the engine can be turned over.

 

[Deimos]

D8N 9TC03863

Was pushing piles with it no problem, machine sat for a day or two, now the starter clunks and won’t spin, like something is holding the engine back. I took the starter out and it spins just fine away from the flywheel. I cannot turn the engine over with a barring tool. I was going to start disconnecting pumps to see if they might be holding it back. Is there something else I should check?

If you don't have a special tool for turning the engine, try the tried-and-true method of using a Stilson wrench. Take a Stilson wrench of the appropriate size and use it to turn the engine by the front damper.

 

[chidog]

And is it turning okay now?