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Jet still frozen

T

TCPDRETIRED218

Member
O K here is the deal the engine, is still frozen SOLID ( SEE PREVIOUS POST } I'm going to split the case tomorrow just to make sure its the engine.I managed to remove the end caps from two of the pistons. the other two pistons are stuck at a point where I can remove one of the end cap bolts on each cylinder, but the second bolt wont come out as it hits the block stopping me from removing the bolt. Cant drive the pistons down as the rod hit the crank.
is it possiable the crank is frozen as opposed to a piston or two being seized up?
Do I really have to remove the cam to remove cylinder block, and how should I go about looseing them from the engine block they sit on.I was thinking if I could pull the block up and get the last end cap bolts removed then take block with pistons en cased to the machine shop and let them have at it
looking for some words of wisdom here. as you can see I,m about of ideas
 
I came into your question late.
Your going to have a lot of work into the anyway. Just take your time.
Remove free pistons out top of block .
Id say split it and put engine on stand of some sort and remove crankshaft.
Soak the stuck pistons with mystery oil, diesel oil, penetrating. A few day s and tap on them to try and get loose to come out top of block.
Use piece of hard wood to drive them out. Something softer that the pistons .
The engine stand may bounce from impact of blows , so put block on firm base with 4x4 hard wood blocks as supporters to drive out pistons .
May have these suggestions out of order, but whats important is dont get in a hurry , time to think thru the step so you dont do more damage to rods,crankshaft, camshaft viz.
 
Pull cam to get at bolts that go from the bottom up to cylinder blocks. Blocks need to be lifted up as a pair. Depending on how. It is stuck you maybe can pull bolts and get it up enough to get your remaining rod caps off. Then lift them off and split jugs apart at coolant tube that joins them. Then I usually just put them in the press and push them out. Usually doesn't take a whole lot of force to push them out.
 
I'm coming into this discussion a little bit late but I have had this same problem in the past.

What I am envisioning is you have two connection rods positioned such that the crank needs to be rotated in the reverse direction in order to remove the caps.

If your tractor has a TA, the crank will not rotate in reverse unless you do at least one of the following; 1) Depress and hold the clutch; 2) Place TA in low range. Just putting the tranny in neutral will not allow the engine to rotate in reverse if the TA is in high range.

Doing those two things should allow you rotate the crank in reverse and get access to the rod caps by lifting the cylinder blocks.

If I have misunderstood your predicament, please disregard the details but hopefully this information will be helpful.

Good luck with your project.
 
It's been awhile and I am not sure what kind of wrench I used, but I have taken a lot of those blocks off and I have never taken the camshaft out. Originally you said there was one piston stuck. Since you have it pretty well disassembled, I'm sure you have the heads off. Take a hacksaw blade or sawsall and go between the blocks and saw the cooling tube into. You will want to replace it anyway. Then you can lift the block with the stuck piston. If there are no pistons stuck in the other block, the crank should rotate as you lift the frozen block. As I think about it I think I might of used an open end wrench and left the cap screw set on the cam as I lifted the block
MMDEL
 
Thanks for the info, turned out all 4 of them were seized up.
Found this out after I got the piston cylinders pulled off the
block. Pretty nasty looking. Going to make a trip
To the machine shop some time this week see if they can
press them out and see what they can do with the cylinder
walls.
Tried taking out those under head bolts as you suggested but
couldnt Get them past the cam so I took it out. In retrospect
I just figured out how I could have that work. By loosening all
the bolts holding the cam and lowering it down with the bolts.
Hmmmm oh well day late and a dollar short again
Thanks
 
Thanks for the suggestions, it had been soaking for a couple months be fore I got hold of it.
this weekend a friend of mine and I took the engine down to the cylinder blocks, got the end caps off the piston rods and pulled it up and out block pistons and all.
going to talk to the guys at the machine shop this week and see if they cant press those pistons out and refurbish the block and pistons.
Might you have any advise how to get the cylinder blocks and heads apart without damaging the water tubes??

Thanks
Brian
 
Got the cylinder blocks and pistons out all in one piece, and it looks like they, all 4 of them , stay that way till they get to the machine shop. thanks for the info.
Do you know an easy safe way to pull the cylinders and heads apart without damaging the water/ coolent tube that runs between the two units?
I would like to save them if I can and re-use them if I can. Having some trouble finding replacements tubes
Thanks

Brian
 
You could bolt the cylinder heads back on the block. Make sure all the valves are closed and sealed first. Fill each cylinder with ATF the hook a port o power hydraulic pump up to the spark plug hole. Might have to make up an adapter. Hydraulic pressure should force fluid down between piston and rings. Some heat to the cylinder blocks may be helpful, but don't get too carried away! I used this method to get a MM ZTU apart, did not hurt th pistons, but one cylinder had to be rebored. Good luck! AH
 
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