engine seized or hydraulic lock?

[Peter Will]

Hi thanks for the advice.waiting for a shop manual.Had a lot to do just to get at 48 mm nut in crankshaft.I have my 9 foot plow hanging on a gantry ,and needed it to lift the fel to get at the crankshart nut. Put a bigger battery in frist and a new cable.tryed a three foot breaker on the crank,will not budge.I have a tarp over the gantry so I can work under it when it snows.Next I will remove glowplugs and inspect with a borescope I bought when they were really expensive, now they are half the price.

 

[Peter Will]

Hi, the filler is under the alternater I have to use a long funnel to get around the alternater,bad place to try to get oil in.
Now that I am set up with a shelter it glow plug removal time and a look with a borescope I bought several years ago and used it about 5 times.a guy at work has used it more than me.Thanks again for some brain storming.

 

[Peter Will]

I am reading all your posts and had to get at the crank, needed to get my gantry over it that I hang my 9 foot plow on the make it easier to mount.I spent the day trying move the gantry with out my tractor to move it.it weighs all of 600 pounds.sunk into the ground stuck casters,gravel. Pulling it with my truck and small 12 hp gravely.two herniated disks,and two knees that need replacemen.Thank you for your advice, now that I have the fel out of the way end and front support off I was able to put a 48 mm socket and 3 foot breaker on it no movement. Put a new starter on good 14 volt battery new cable.still nothing I am waiting for a shop manual to see if it can be lock through the transmission which is hydraulic and also runs the fel with the same fluid utd super..And thanks for the advice And I am here.

 

[Grandad4]

...two herniated disks,and two knees that need replacemen...

Not the same age-related conditions as me, but no doubt the same effects. What used to be easy is now a real chore. Good luck with sorting out that tractor, but take care of yourself doing it. There are causes worth dying for, but a stubborn old tractor isn't one of them!

 

[Leejohn]

Are you saying that it wouldn't turn over with the glow plugs out. Push the clutch in then try again with the clutch pushed in.

 

[GPintheMitten]

Subscribing to learn.

 

[crazyal]

I had the alternator on a Hyundai that froze. It acted like the engine was seized. Even trying to turn the engine over by the nut on the crankshaft it wouldn't turn. While it's not likely to be your problem I would make sure that anything external to the engine isn't your problem. Others have said to push the clutch in to isolate it from the engine but I would go a step further. Things like the hydraulic pump need to be eliminated.

 

[ovrszd]

I had the alternator on a Hyundai that froze. It acted like the engine was seized. Even trying to turn the engine over by the nut on the crankshaft it wouldn't turn. While it's not likely to be your problem I would make sure that anything external to the engine isn't your problem. Others have said to push the clutch in to isolate it from the engine but I would go a step further. Things like the hydraulic pump need to be eliminated.

Yep. I think someone also mentioned the starter. I've saw those engage and lock themselves to the flywheel preventing the engine from turning.

 

[r8nger]

If it was hyd locked, the engine would turn 180 deg backwards. I'm betting the starter is stuck engaged , not allowing any movement.

 

[ovrszd]

If it was hyd locked, the engine would turn 180 deg backwards. I'm betting the starter is stuck engaged , not allowing any movement.

I'd for sure eliminate all those things before I started disassembling the tractor/engine.