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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

955H Cat Engine Rebuild:

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Gary H. Thompso

05-03-2006 14:50:34

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Hi,
I have a 955H Cat Trackloader which has worked well for me for about a year. I started having trouble with it not long ago, the head gasket went bad so I replaced it after having the head checked at a machine shop. It ran good for a day then started giving missing and blowing black smoke, same thing as when the head gasket went bad.
I tore it down today, suspecting a sleeve that had slipped but found the head of a valve imbedded in the piston. I have anti-freeze in the oil so guess it is time for a major rebuild. Anyone have suggestions as to where to get the parts? Cat wants $7,000 just for the parts although a local machine shop says they can do the whole job for about $3,500, labor and parts. The labor is just for the sleeves, pistons, bearings, etc. They will take it to what they call a short block and I will put the rest together. Anything I should watch out for? Should I check anything else (transmission, etc) while the engine is out? The transmission is a power shift, 1st & 2nd forward and the same in reverse. My serial number is 60A10479.
Thanks,
Gary H. Thompson
reg@wvlogging.com

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mi mark

05-13-2006 16:32:58

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Re: 955H Cat Engine Rebuild: in reply to Gary H. Thompson, 05-03-2006 14:50:34

Bob is right don't pull the engine if you get parts from CAT the sleeves will come as one unit with the rod already in the piston just put on o-rings lub them but check the counter bore on the block to see if one sleeve is to high or low .

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Bob Plumadore

05-06-2006 12:03:22

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Re: 955H Cat Engine Rebuild: in reply to Gary H. Thompson, 05-03-2006 14:50:34

This sound like an inframejob. So you dropped a valve, it punched a hole in the head. Piston and sleeves, rod bearings roll in a set of mains. I would not pull the engine. If the transmission isnot giving trouble, leave it alone, change the oil and filters check the linkage and replace any worn parts

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Gary H. Thompson

05-13-2006 18:53:58

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Re: 955H Cat Engine Rebuild: in reply to Bob Plumadore, 05-06-2006 12:03:22

Thanks for the information, I assumed the engine wouild have to com out!
Gary

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