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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Case 450B - what is this?

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David in SC

01-12-2005 03:21:10




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Well,
I finally decided to try and tackle the overhaul (partial) of the "tired" engine...that blew steam. First, let me say that I really appreciate you all that give me advice and I know that the best thing for this machine is to totally OH the engine, out of frame. But, I have decided to leave it in the machine. It is strictly a time and money issue. I will end up with $1,000 in kit and complete head re-work. And, if it flies all to crap when I start it up then I will sell it for what I can and use the proceeds to hire out the basement digging. At this time, I just cannot pay someone to remove engine and really do the whole engine. I really hope that you all will still offer up advice to keep me flying semi-straight. I pulled the head and feel quite sure the gasket was blown between 1 and 2. Apparently, when the #1 rod gave way the piston smacked the head and left a small dent where the sleeve meets head. Machine shop will re-surface and replace/machine all necessary components to bring head up to par. #1 valve was also chipped, but machine shop said the valves may not be as bad as they looked. Wait and see. Rusty in #1 which is what I expected and heavy carbon/oil in all four. Sleeves have pinholes and very heavy ridges. All worn badly. Question: What is the purpose of the 1/4" hole that runs from water pump through the bottom of the head and into the block? Mine is completely blocked in the engine block, I guess due to overuse of radiator sealer? What is best way to open it back up? Is that an indication that the water pump is leaking? Nothing else to report right now. I have only measured crank on #3 rod throw and it looks good and is standard. I hope it is OK.

Thanks in advance for the help. Any advice welcomed.

DAvid in SC

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stressfree

01-12-2005 15:00:35




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 Re: Case 450B - what is this? in reply to David in SC, 01-12-2005 03:21:10  
dave i think thats a runaround route so block gets flow before the thermostat totaly opens.find out how to remove and install sleeves.some have to be pressed out some with a puller.some they freeze before they install.i have my manual ill see how you do the sleeves.



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David in SC

01-13-2005 17:38:14




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 Thanks in reply to stressfree, 01-12-2005 15:00:35  
Thanks Stressfree for the advice. I kind of assumed it was a bypass, but was not sure. I will open back up with small drill and play with it until it comes back close to 1/4". I do have a Case manual. Best money I ever spent on this machine. I am building a puller to remove the sleeves. Most say to just beat them out with a piece of oak , but this machine has already been beat up too much. Sleeves are due any day so I can make final adjustments to puller and get them out. I am curious how to seat new ones. Manual shows a tool to use with plastigage. I have measured current ones and they appear to be just .002-.003" above deck. I assume they have a shelf on outside that will help me not seat them in too far? I plan to use a block of wood to lightly tap them in. Any thoughts on this?
While waiting, I am steadily straightneing radiator fins. Looks almost like someone intentionally bent them. What a mess!

Thanks again for the help.
David in SC

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stressfree

01-14-2005 03:07:42




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 Re: Thanks in reply to David in SC, 01-13-2005 17:38:14  
sticks bend the fan blades.they use a puller to get out and push them in.i would freeze the sleeve it will push in easier.they must use that pusher for the last couple thousands to press it in.id post it on how to install sleeves on this page someone will pick up.



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