Stuck yanmar 165D

   / Stuck yanmar 165D #71  
If you're positive it's stuck rings, try white vinegar (cleaner, not salad dressing) in the cylinders, then when she moves, a good flush with seafoam/oil/atf/penetrating oil/etc./whatever to displace the vinegar. then oil change.
 
   / Stuck yanmar 165D
  • Thread Starter
#72  
290 hours would make it barely broken in. Did the neighbor explain why they parked it 7-10 years ago? The rust/corrosion could easily be from sitting in an unvented shed, but strikes me the history may be more important as to why they stopped using an essentially new tractor. If you've already paid for it, they may be more forthcoming with the real story, and then you'll have some valuable info on both the tractor and your neighbor.
My neighbor was a Lieutenant with the Cedar Rapids Police Department and on his days off, he did landscaping. He babied this thing as he does with all of his stuff. He parked it in his machine shed when he retired from CRPD and also stopped his landscaping as well. Where he parked it, that's where it sat until we moved it. Since we are here in Iowa and have some pretty wicked humidity, that is likely what caused the flywheel to get like that.
I just got the remaining ATF/xylene mix out of cylinders (they were now about 2/3 full each) and drained the pan. So, a fair amount moved past the rings. So, I'm leaning more towards flywheel now. Put a fresh filter on and oil in it. Will talk to repair guy this week on my days off.
 
   / Stuck yanmar 165D #73  
My neighbor was a Lieutenant with the Cedar Rapids Police Department and on his days off, he did landscaping. He babied this thing as he does with all of his stuff. He parked it in his machine shed when he retired from CRPD and also stopped his landscaping as well. Where he parked it, that's where it sat until we moved it. Since we are here in Iowa and have some pretty wicked humidity, that is likely what caused the flywheel to get like that.
I just got the remaining ATF/xylene mix out of cylinders (they were now about 2/3 full each) and drained the pan. So, a fair amount moved past the rings. So, I'm leaning more towards flywheel now. Put a fresh filter on and oil in it. Will talk to repair guy this week on my days off.
Removing the loader is the hardest part of splitting the machine. And it's not that difficult to do really. A few YT vids to watch and you are ready to take it off.

I would drain the hydraulic fluid from the machine 1st and foremost before the split. The reason being, the suction metal pipe has a jumper hose to take off during the split.

Using 3-ton or better jack stands or even a section of a tree trunk at the right height will keep the back end fixed.

An engine hoist is best for the front end. I've also seen it done with the 3-ton floor jack and ratchet tie-downs. Many YT vids out there.

The rest of the split is using your cordless impact with impact sockets. Just first a few short bursts to free the bolts.

Even this thread on the site is for a bigger machine than yours. Wasn't hard for him to do it either. Plenty of images to see.
 
   / Stuck yanmar 165D
  • Thread Starter
#74  
Thanks, but I know I will be in over my ability on that, just don't have the resources. I will take it to a shop
 
   / Stuck yanmar 165D #75  
Thanks, but I know I will be in over my ability on that, just don't have the resources. I will take it to a shop
I bought our YM165D back when they were the newest offering from Yanmar. It would look like yours....except I loaned it out after 40 good years and a flood took it away and destroyed it.

Anyway, it does't look like rings to me. I think you should take off the top of the transmission case and see if things turn. It is easy to remove the shifter cover. Just a few bolts. You can resuse the gasket with some sealant or even without. The gasket is above the fluid level.
Your trick of using the PTO only works to turn the engine if the transmssion is not stuck.

Also, disconnect the front hydraulic pump if you have one forward of the front crankshaft pulley. It disconnects with a masterlink on the chain coupling.

I don't think any of this is beyond your ability. Frankly I like your work better than any modern shop I know of. And if you are close to Colorado, give me a personal message. I might be able to help - I've been helping people with Yanmars since before TBN.
rScotty.
 
   / Stuck yanmar 165D
  • Thread Starter
#76  
How do I disconnect the front hydro pulley from the master link? I want to give that a try
 
   / Stuck yanmar 165D #77  
How do I disconnect the front hydro pulley from the master link? I want to give that a try
Well, the front hydraulic pump driven off of the crankshaft nose was an option for the YM165 loader. The loader could also be driven from a diverter valve connected to the tractor's own hydraulics.
So first thing is to see if yours even has the front pump. It may not. But if i does the pump is obvious there behind the front bumper. There are two hoses, the Cessna pump, and the chain coupling.

The master link may/may not be accessible. Normally one would turn the engine to gain access if the master link is hidden. If not, I have no easy ideas....But it is worth a look, and those pumps can sieze up.

The masterlink has a spring clip on one side. Just like a bicycle chain. You expand the clip by twisting a screwdriver in the slot and then with your other hand simultaeously move the clip laterally so that it comes off. Wear safety glasses.

Chain Coupling.jpgChain Coupling master link.jpg
 
   / Stuck yanmar 165D #78  
According to the parts manual it may not have a master link. Don't know yours is like this but something to look at.I think the electric clutch set up was primarily for a belly mower or snow blower but really don't have a clue or a clue what you have.
 

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   / Stuck yanmar 165D #79  
According to the parts manual it may not have a master link. Don't know yours is like this but something to look at.I think the electric clutch set up was primarily for a belly mower or snow blower but really don't have a clue or a clue what you have.
Winston, that diagram shows something completely different. That is a picture of a front PTO. The front PTO was also an option for the YM165, but I never saw one that had both a front PTO and an auxiliary front hydraulc pump.
They are not related.
 
   / Stuck yanmar 165D #80  
Sort of thought that but just putting the page out there in case that is what Millard has.
 

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