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Tractor Talk Discussion Forum

John deere D stuck

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upikfarm

05-29-2004 19:39:53




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Looking for advice on the best way to unstick a JD "D". The tractors been idle for about 10 years.




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Ronald

06-01-2004 18:15:09




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 Re: John deere D stuck in reply to upikfarm, 05-29-2004 19:39:53  
Hello,
I once unstuck a JD AR this way: (only works of pistons are not at BDC. )
pull off the rockerarms so all valves are closed, then Pull the plugs and pour in a cup of Diesel and let it soak for a couple days. Next, Spray a good shot of ether in one of the plug holes and install the spark plug. Wire-up a Barbeque Igniter(sparker) to the spark plug. and press the button. Repeat if necessary. the force from the ether igiting should break loose the piston. Old engines were built heavy enough, so it won't hurt them. hope it works for ya,
Ronny

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Don Wadge

05-30-2004 14:22:48




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 Re: John deere D stuck in reply to upikfarm, 05-29-2004 19:39:53  
Something I have done several times is as follows. Buy a gallon of WD40 or other similar agent. Never use brake fluid and diesel fuel is not very good. Fill the tractor with hot (boiling) water. Drain it and fill again with boiling water. The first fill will cool fairly quickly because the block is cold. Put a hose on it if you can or pour several pails through it if you can. You want to get the block good and hot so that it expands the cylinders. This will help get the WD40 into everything. Use a good 5' crow bar and put it through the holes in the flywheel. You can usually find a good pry point depending on the position of the flywheel. It's a good idea to make sure none of the valves are stuck. If they are stuck then remove or loosen the tappets. Don't worry about pulling too hard by one or two men, you won't hurt anything. If you don't get it loose right away leave it for a week or two with the WD40 in the cylinders then heat it up again with the hot water.
Another method of getting the WD40 into the rings is to install a pencil type block heater in the drain hole of the block. Plug it in for a day or two then unplug it for a day and plug it in for another day or two. The expansion and contraction of the cylinders gets The WD40 into things and every time it expands and contracts it is breaking that rust seal. I know at least some of you are laughing but this has worked for me more than anything else. If this won't do it you've got a pretty rusty cylinder. Something else I have done when I was hauling home a stuck tractor is put WD40 in the cylinders before I loaded it. Then I hauled it in gear with the chains a little slack. Not so slack that it can roll but enough so the tractor can jiggle. Might not be the best plan but for the times that it worked it didn't cause me any hassle.

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RAB

05-30-2004 03:34:46




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 Re: John deere D stuck in reply to upikfarm, 05-29-2004 19:39:53  
We may be able to assess better if you tell us a bit more about how it has been stored. Outside, uncovered is one end of the spectrum. The other is a well ventilated warm and dry building.
Usually the cylinder with open exhaust valve gets most moisture (given that an oil bath air-cleaner is fitted and full of oil). I would not recommend full replacement of parts unless checked and found out of spec. I have often found it best to remove the head, at least, to check the internal condition. I have removed a bees nest (and other items) from the cylinders as well as finding mouse nests in manifolds or water jackets.
I have only had experience with vertical cylinders. Horizontal ones, although having a similar problem, may respond to some methods better than others.
Regards, RAB

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Ron

05-30-2004 02:50:26




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 Re: John deere D stuck in reply to upikfarm, 05-29-2004 19:39:53  
I spray PB Blaster into each cylinder, let sit overnight, come back in the morning and gently rock it back and forth with a wrench.



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George

05-30-2004 02:35:42




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 Re: John deere D stuck in reply to upikfarm, 05-29-2004 19:39:53  
Very few people agree on the best way to free up a stuck engine. First, pull the valve cover and remove the rocker shaft. Now try turning over the engine -- sometimes it is only a frozen valve train.

If not, now it is time to get serious -- probably the best way I have heard is to fill the cylinders up with Diesel Fuel and wait. Every week or so, grab the flywheel and rock it back and forth. And wait some more. It takes time. Be careful not to use too big of a torque amplifier on the flywheel -- you could break a piston ring land. Once you get the pistons to move a wee bit, you are home free.

Depending on the rust damage to the rings and cylinder walls, you may still need to do a ring job.

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Bryantt

05-29-2004 19:46:18




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 Re: John deere D stuck in reply to upikfarm, 05-29-2004 19:39:53  
take the engine all apart and put new pistons rings, the whole works in.



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