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ENGINE STUCK D4

Yesterday's Tractor Forums
J

Joes13

New User
I have a dozer D4, the dozer was about 8 year with out use, now the enginee is stuck, what can I do to to release the pistons?

I have tried to run the starter but nothing happened.

Joe
 
Yes, the dozer was sit outside with the exhaust uncovered, I mean it had only the exhaust manifold,

I have tried to move the wheel of the clutch and the belt of the fan, but it is too hard.

What can I do?
 
Steve is right.with a little bit of luck you will get by with replacingthe valves , valve guites and seats in the head. You are probably going to have to replace at least 2 of the pistons & liners.I would go ahead and do all 4 at the same time.
 
Can you gain access to the cylinders by removing a glow plug or injector? If so, add 2-3 oz of 50-50 atf and diesel. Do that every day for a week. With the injectors out, try and turn it over after a week. Try again a week later. Also, change the oil. It may have a crank full of water. I pulled the drain on an old tractor and got 5 gal of water before any oil. That one had issues...

If it won't break free after 2 or 3 weeks, then you probably have to take it apart. If water got in the cylinder, then there may be a layer of mud in there and rust like you can't imagine.

jb
 
Thank you for the support, I will try with the 50-50 ATF and diesel, I`ll let you know after a week if it works

Joe
 
Try putting PB Blaster/or Brake Fluid in the cylinders. Let them soak for a while. If it does not come loose still, you may need to take the motor apart and get it free'd up.
 
The first thing I would do is pull the oil drain plug. If water comes out you have major rust in the cylinders. Stan
 
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