Stuck yanmar 165D

[careyo63]

Thats why I mentioned it through the starter. Won't take much plus you can turn it backwards. The broken ring will hopefully fall down into the oil pan and maybe stuck on the bottom of the cyl. wall and top of the piston.. He's going to be turning that crank at some point until he finds the bad cylinder anyways.

 

[LouNY]

Or with the tractor in high gear just rock the tractor back and forth, along with the penetrating fluid.
That me be all it needs, I don't recall anything in the previous post to make me believe it has a broken ring or piston. It would hurt to get a little endoscope camera to look in through the injector or glow plug opening;
of course with the head off it's not needed.

 

[millard762]

Tried to free it in 6th gear to no avail. I tried looking through hole by starter. On mine, it was at the very bottom of flywheel housing and the loader cross member was in the way....that hole was only dime size

 

[careyo63]

Remove the starter and see if you can move the fly wheel through the mounting hole. If it don't move with very little tention forward or backwards is a big problem. Your pulling piston rods on the crank shaft until you can move the crank shaft. JMO!

 

[millard762]

I went to remove the starter today and was limited on time. Didn't get it off. I will try again

 

[millard762]

Ok, got the starter off.....very interesting sight. There was an almost gypsum type substance all over inside. Cleaned it all up but there is probably more in areas I can't reach down at the bottom of flywheel housing. Tried advancing the flywheel to no avail. Could the gypsum type material be the ceramic or organic material from the clutch? Could this be my culprit? I will say that when we drug it out of the machine shed with skid steer, when clutch was engaged, it allowed for the free movement of the rear differential and when disengaged, the rear would cease movement. Thoughts?

 

[careyo63]

Could be the culprit. Looking that way. Imagine what the main drive shaft looks like. Wow!! wish I was there looking at it!!

 

[millard762]

I really hope this doesn't have to be split

 

[bmaverick]

I really hope this doesn't have to be split

I've had a gut feeling ll along you splitting the machine, but held back.

Once split, the probability of having no load on the engine is very possible.

 

[millard762]

What do you think would cause it? If clutch is working, is it something with flywheel or is it the engine?

 

[ponytug]

I think water got in there, probably hard wash water, and your clutch is corroded on to the plate. With luck, all you need is a shear pin and a new clutch, but I am afraid that splitting the tractor is in your future. You might just need the replacement pin, but I think that you will have to split the tractor to get to it.

All the best,

Peter

 

[LouNY]

It apparently will roll with the clutch depressed and skid the tires with the clutch engaged. I have no idea what the foreign material is I would suspect aluminum oxide but no telling for sure.

 

[millard762]

It apparently will roll with the clutch depressed and skid the tires with the clutch engaged. I have no idea what the foreign material is I would suspect aluminum oxide but no telling for sure.

Correct

 

[careyo63]

Does the YM 165 have a drain on the Bell Housing? sure is a lot of moisture that's been in there for a while.
Seems odd and just thought about it. Been quite a few yrs. when I first bought my Yanmar I noticed there is a bell housing drain on the YM2000. How I noticed that is after use I would see a small drip or two on the floor the next day just below it of what appeared to be Eng. Oil. Which was telling me the main seal had a small leak. No large amount ever came out where I plugged it Checking it and Yrs later it eventually dried up and fell out.. I think I used a whine Cork. But the leak stopped and to the day never see a drip. It's not in the Trans fluid pan but just in front in the bell housing just outside the pic..

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From when I serv. the Trans. fluid and had to replace the Filter screen it was in such bad shape. you can see the Grn. Triangle. Boy Was it super Nasty and Stank!! Dead whale oil of 30Yrs!! Thick as Crisco oil on the bottom of the Pan!
Fair Warning

 

[millard762]

Yes, it was at the very bottom. About a dime size hole. Nothing came out. This machine has never sat outside in the elements prior to me picking it up. But, I guess I do live in Iowa and summer can get extremely humid so moisture can get into anything

 

[sandman2234]

I would put tractor in neutral and make sure it will roll. Then put it in gear, push clutch and see if it still rolls. That removes the tranny stuck and clutch stuck issues being the problem. Put a breaker bar with socket on crankshaft nut and put a weight of about 100 pounds on it and walk away. Measure height of breaker bar from floor, and come back every day checking height. If it moves, add 50 pounds and wait another day. Once it moves, life will be good.
Pull starting, impact wrenches, beating on piston tops and most other ways have had a certain amount of success with stuck tractors, but you also risk bending a rod with impacted forces. You don't appear to be in a hurry, so let non impact be your guideline.
David from jax

 

[careyo63]

Use Air Pressure And ATF. Watch for the Valves to close And pressure up the Cyl. through the fuel Injection Port. A lot of even pressure added that way. And you can monitor it easily adding pressure. No beating on it. Zip tie a small vacuum hose to your air nozzle with a piece vacuum hose works really well! If you have a compressor?

 

[millard762]

I would put tractor in neutral and make sure it will roll. Then put it in gear, push clutch and see if it still rolls. That removes the tranny stuck and clutch stuck issues being the problem. Put a breaker bar with socket on crankshaft nut and put a weight of about 100 pounds on it and walk away. Measure height of breaker bar from floor, and come back every day checking height. If it moves, add 50 pounds and wait another day. Once it moves, life will be good.
Pull starting, impact wrenches, beating on piston tops and most other ways have had a certain amount of success with stuck tractors, but you also risk bending a rod with impacted forces. You don't appear to be in a hurry, so let non impact be your guideline.
David from jax

I did that with clutch and rolling. In gear, it won't roll and when I depress clutch, it rolls.

 

[millard762]

Well, took the head back off. I don't think any of the fluid in the cylinders moved down. I think what got down in the oil pan was overflow when I put the head back down. I started tapping on the piston tops, no movement. I filled the cylinders back up and slid the head back on.....hurry up and wait. Cylinder walls are beautiful and show nice cross hatch. This is before I wiped it up.

 

[etpm]

I'm curious. Can the crankshaft be rotated at all? If you try the screwdriver through the starter hole trick can the flywheel be rotated even a tiny bit? The reason I ask is because since there is clearance between the connecting rod bearings and the crank shaft it should be possible to rotate the crankshaft a tiny amount even if the pistons are stuck solid. If the crankshaft won't move even a tiny amount then I think the crankshaft must be frozen in place. If it does move a tiny amount then the pistons are most likely the problem.
Eric