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Dead Cylinder

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AJ.
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Joined: 20 Oct 2007
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Location: UK

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PostPosted: Fri Oct 12, 2018 4:37 am    Post subject: Re: Dead Cylinder Reply to specific post Reply with quote

Sorry I can't remember what the setup is under the rocker cover as I have not seen the inside of one of those since the 1960's,any thing that comes to us for head or valve problems the head will be taken off,I understand you trying to fix it from the outside as it labour intensive to remove the head,measure the height of the valve and compare it with one of the others,if it is not as high then the stem may have carbon build up not allowing it to close,if it is the same hight the valve may not be seating properly or even be burned,go over to the IH site Red Power the guys there are working on those tractors daily and someone may know a trick or two to get you going.
AJ
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thebunns
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PostPosted: Fri Oct 12, 2018 7:41 am    Post subject: Re: Dead Cylinder Reply to specific post Reply with quote

AJ. wrote:
(quoted from post at 05:37:00 10/12/1Cool Sorry I can't remember what the setup is under the rocker cover as I have not seen the inside of one of those since the 1960's,any thing that comes to us for head or valve problems the head will be taken off,I understand you trying to fix it from the outside as it labour intensive to remove the head,measure the height of the valve and compare it with one of the others,if it is not as high then the stem may have carbon build up not allowing it to close,if it is the same hight the valve may not be seating properly or even be burned,go over to the IH site Red Power the guys there are working on those tractors daily and someone may know a trick or two to get you going.

Thanks for the reply! I'm learning about these start valves bit by bit. I am waiting on a response from one of the guys who seems to have knowledge of the subject.

Vic

AJ
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AJ.
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PostPosted: Sun Oct 14, 2018 3:41 am    Post subject: Re: Dead Cylinder Reply to specific post Reply with quote

They sound more complicated than they really,each cylinder has three valves,two of the valves are conventional exhaust and inlet both operated by the camshaft,the third valve changes the compression of the engine,the valve is operated manually,when the valve is open the compression area is now bigger and the compression is less enabling the engine to run on gas,to run on diesel the valve has to be closed hence increasing the compression to a point where it gets hot enough to ignite the atomized diesel fuel,if that valve or either of the other two has an issue it will cause a miss,trouble with all engines everything that wares or burns out is inside,I always had a soft spot for IH tractors they always had a nice look to them and all in all were not a bad machine in their day.
AJ
 
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thebunns
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PostPosted: Mon Dec 03, 2018 6:57 pm    Post subject: Re: Dead Cylinder Reply to specific post Reply with quote

AJ. wrote:
(quoted from post at 04:41:14 10/14/1Cool They sound more complicated than they really,each cylinder has three valves,two of the valves are conventional exhaust and inlet both operated by the camshaft,the third valve changes the compression of the engine,the valve is operated manually,when the valve is open the compression area is now bigger and the compression is less enabling the engine to run on gas,to run on diesel the valve has to be closed hence increasing the compression to a point where it gets hot enough to ignite the atomized diesel fuel,if that valve or either of the other two has an issue it will cause a miss,trouble with all engines everything that wares or burns out is inside,I always had a soft spot for IH tractors they always had a nice look to them and all in all were not a bad machine in their day.
AJ


Well, here we are again! That unstuck valve didn't last long. It's stuck again. So back in I go! I think I can help it a little this time (after I get it working again) by leaving the lever in the diesel position after shutting down the motor. I haven't been doing that. That way, when I go to start it on gas, I'll move the lever and force the valve to have to move at least once. I also bought a bottle of some kind of "miracle oil" that I'll dump in the pan.

Vic
 
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thebunns
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PostPosted: Tue Dec 04, 2018 2:48 pm    Post subject: Re: Dead Cylinder Reply to specific post Reply with quote

Question: How long does it take to free up a stuck starting valve with 100 lb. pushing an air hammer?

Answer: Less than 5 seconds!

I took the valve cover off and tapped on the cap with a screwdriver & hammer. It felt like it was bottomed out. I was able to do that without removing the rocker assembly. I put the air hammer to the cap, pulled the trigger & the valve popped up into place. I've now left the main lever in the diesel position until the next time I start it. I also added a quart of Marvel Miracle Oil to see if it will help lubricate the top of the motor. I also found an easy way to get the hood out of the way---just pull the trigger on the winch.

Vic


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