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Case Tractors Discussion Forum

How to unstick case engine?

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Dave Minn

06-03-2005 06:02:37

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I just bought a great looking 411 case tractor which was stored in a machine shed for 25 yrs or so.The engine is stuck and need info from anyone on how I should proceed to get it unstuck.I really appreciate this forum and all you case people do to help us want to be restorers!Thanks,Dave Ahlgren

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caseman-D

06-04-2005 21:10:17

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Re: How to unstick case engine? in reply to Dave Minn, 06-03-2005 06:02:37

This 900 had a stuck engine when I bought it several years ago. I was in no rush to get it going so I pulled exhaust manifolds off and poured different types of penetrants down thru the valves till they were full. I left the manifolds off and put in plugs to see which ones were still full. I had also drained the oil so I could tell if the fluid was draing through.

Engines don't stick over night so it make take a while for it to free up. I also pulled the starter and used a big bar to pry on theflywheel. Becareful not to break anything. Every so often I would walk by it and work the flywheel. finally after a few years I was able to turn it. Like I said I was in no hurry.
caseman-d

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Jim M

06-03-2005 17:32:09

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Re: How to unstick case engine? in reply to Dave Minn, 06-03-2005 06:02:37

I got a 730 orchard given to me with a stuck engine. I removed the starter and used a 6' pry bar to move the engine back and forth until it freed up.

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dctom

06-03-2005 16:27:35

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Re: How to unstick case engine? in reply to Dave Minn, 06-03-2005 06:02:37

I have broke them loose with hydralic pressure, i guess maybe 2 or 3 dozen, sc-dc-vac-g jd-m farmall- and many others, never bent but one rod and i think it was bent before i started

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dej(JED)

06-03-2005 11:58:19

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Re: How to unstick case engine? in reply to Dave Minn, 06-03-2005 06:02:37

There is no one simple fix that fits all situations. I have seen stuck starters cause
stuck engines. Some engines free up by pulling in gear. Oh yes, a sledge hammer and a 3 inch log block works on some too. I have even had a couple that required that we break the pistons out in pieces. Good Luck, you will need a little.

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Kirk C,

06-03-2005 07:02:11

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Re: How to unstick case engine? in reply to Dave Minn, 06-03-2005 06:02:37

Hello Dave,
I have the same thing with mine,
I found this 900 in Hay,s Ks,
It,s all there and decent paint too,Muffler was rotted off,So it just has a rusty stub coming out of hood,
Im hoping and praying that It,s not stuck,
This one has hand clutch which I kinda like,
What year was this kind w/ hand clutch?

the knob,s are all there too as well as the speedo glass not broke,
has square window cab,seat is all there w/ cushion,
all paint is decent in cab as well as outside,
Dave, Ive heard about pouring diesel fuel
into the cylinder,s thru pipe,and letting it set,
for a while,to see if it frees it up,
there was a man on the net that got a 900 like mine,It was stuck,he messed w/it a little bit,
got it free,& drove it home 20 mile,s,
that kind of stuff I really like Dave,
It show,s that nothing is Impossible,

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Texas Denny

06-03-2005 08:48:44

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Re: How to unstick case engine? in reply to Kirk C,, 06-03-2005 07:02:11

Kirk, if your 900 has been sitting out with an uncovered exhaust for one summer, it very likely is stuck. I believe your tractor is diesel and that will help some but your likely to have at least one stuck cylinder.

Before pulling the head, note which exhaust valves are open. These are the cylinders at the greatest risk and the cylinders of your greatest interest.

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Kirk C,

06-03-2005 15:11:38

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Re: How to unstick case engine? in reply to Texas Denny, 06-03-2005 08:48:44

Yea your right about that,
the rest of the tractor is all there as i said,
the line from the bottom of Injection pump is
unhooked at one end that goes into the block,
what year is the 900,s that have hand clutch,s?
Kirk C,

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Texas Denny

06-03-2005 15:21:24

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Re: How to unstick case engine? in reply to Kirk C,, 06-03-2005 15:11:38

I think all of them were. If you want the year, there should be a plate on the right side of the instrument panel. 900's were built in 1957, 58 and 59. 8100001 is first tractor in 1957. 8120001 is first in 1958 and 8140001 is first in 1959. I have an 800. It wasn't stuck but the o-rings at the bottom of the cylinders were bad so I had to rebuild it anyway.

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C. Amick

06-03-2005 06:43:42

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Re: How to unstick case engine? in reply to Dave Minn, 06-03-2005 06:02:37

There are some good articles in the "Article Archives" on this web site on freeing stuck engines. One guy uses a mixture of 1 part kerosene, 1 part Marvel Mystery Oil, and 1 part automatic transmission fluid. Don't try turning the engine until you make sure the valves are not stuck or you will bend the push rods. Might want to consider pulling the rocker arm assembly off if the valves are stuck and you want to try turning the engine.

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Crispin

06-03-2005 06:43:00

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Re: How to unstick case engine? in reply to Dave Minn, 06-03-2005 06:02:37

There are many opinions and you will find many if you search this board. I tried them all with my '52 SC and I finally got it but don't know which worked the best. One thing that helped no matter how many different potions I used was this: Jack up one wheel and block it as you might leave it this way for a long time. With the head off, put the tractor in high gear and push/pull on the tire/wheel back and forth to try and work in the penetrating oil. The weight of the wheel and tire adds a lot of inertia to help you get things moving again. What finally got mine free was a carefully carved piece of maple firewood and a 5 pound sledge. You don't want to hit the center of the piston, so carve it to fit the cylinder bore and make sure the center is relieved. Also I discovered a penitrating oil called Kroil that works very well. Google Kroil and you will find it. They have a cult-like following of believers. I was not in a hurry and mine took an almost daily visit all Summer to rack the jacked up wheel and add more oil. The good news is I rebuilt it right there in the driveway and it runs like a top now... Good Luck, C.

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King Mondo

06-04-2005 05:22:50

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Re: How to unstick case engine? in reply to Crispin, 06-03-2005 06:43:00

Ihave used apple cider vinegar to help unstick an engine. Pour it in the spark plug holes and use the wrecking bar to try move engine back and forth. May have to give it some time to work. You will probably want to pull head anyway to polish up the sleeves. Then use in conjunction with the wood pegs. It worked for me on an engine that had sat outside with the head off for 20 years.

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Texas Denny

06-03-2005 08:40:07

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Re: How to unstick case engine? in reply to Crispin, 06-03-2005 06:43:00

I had one that still wouldn't go on one cylinder with all the concoctions known (5 months). I had to pull the engine and put it in a hydraulic press to push it out. You must push from the bottom side of the piston on the pin bushings with a block of wood and be certain the sleeve is taking the pressure from the other side. Remarkably that worked without damaging the piston or sleeve. That tractor is now running perfectly.

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