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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

951c traxcavator

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jim hynden

01-28-2006 11:33:04




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I have a chance to buy a 951c Cat Traxcavator for under $7,000, but it has a couple things that will need to be fixed. The worst of these is that the owner says it has a "pivot shaft seal" leaking that is letting the fluid from one system get over into the other fluid system. I think he said drive system fluid is filling up hydraulics system, but not sure. Is this a big thing to fix? expensive? parts still available? Repairable in my farm shop with normal tools?

The other thing is one of the tracks is noticably looser than the other and he says it tightens up some after run a little, but he thinks it needs a link removed. Does this sound logical?

Most of the markings on this unit are either Japanese or Chinese, I'm not sure which and the serial tag says "19H1633". Can someone tell me more about the age and origin of this unit? Thanks, Jim

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Bob Plumadore

02-21-2006 09:51:42




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 Re: 951c traxcavator in reply to jim hynden, 01-28-2006 11:33:04  
you dont have much of a problem it sounds like the seal on the steering pum is bad. there are 2 filters under the seat. the smaller one is actually a pickup strainer, if it gets clogged it will cause the lip on the steering pum to suck in and pull in transmission oil ( SAE#)) same oil as used in the engine. If you need me to I will scan the information from the service manual
Bob P



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Bob/Ont

01-29-2006 19:07:29




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 Re: 951c traxcavator in reply to jim hynden, 01-28-2006 11:33:04  
Built in Japan starting in 1970



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Bob/Ont

01-28-2006 18:20:58




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 Re: 951c traxcavator in reply to jim hynden, 01-28-2006 11:33:04  
Try the machine out and see how it works before you buy it. The tracks will not tighten up unless they get full of mud. There is an adjuster at the front of each recoil spring half way up the track frame, under a small door. Pump them up tight if you can and back the idler off 3/8" Don't know about a Pivot Shaft, not the right terminoligy. May be trans oil going into the steering. i will see where it was made with that serial # if I can.

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jim hynden

01-30-2006 00:42:28




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 Re: 951c traxcavator in reply to Bob/Ont, 01-28-2006 18:20:58  
Bob, thanks for your response. If it is trans oil getting into the steering, is that difficult and/or expensive to repair? Also, if the adjuster will not take out the slack, is it possible to remove a section of track? I really don't know much about a machine this big, I've only owned skid steer loaders (much smaller than this) before. If it all operates as it should, do you think 7K is a fair price? Thanks again for your input.

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Bob/Ont

01-30-2006 10:35:33




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 Re: 951c traxcavator in reply to jim hynden, 01-30-2006 00:42:28  
If it doesn't have parts falling off of it and it can dig dirt I guess it's not too bad. You have to remember if anything goes wrong with the machine it can take quite a bit of money to repair. I don't like to comment on price as I am not involved in trading machinery or parts, just fixing them. The undercarrage and final drives are the bigest cost on a track machine. You can take a link out but that means your track is likely very snackey and you could walk out of it when rocking over a bump and turning at the same time. If the idlers are not out to the end of the track frames you may only need to free up an adjuster. Not a small job though but a must to keep it working. Have to find out what oil is going where and then I might have a idea what to do.
Later Bob

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jim hynden

02-09-2006 16:27:20




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 Re: 951c traxcavator in reply to Bob/Ont, 01-30-2006 10:35:33  
Bob, the present owner now tells me this leak was discovered during PM fluid changes. After refilling all, the right side tank( he thinks) was found to be low. Was topped of and came up low again. Rear tank was found to be overfull. These were both supposed to be hydraulic fluid. Does this make sense? If so, do you have any idea on a fix and cost? Thanks again for your experienced help. Jim

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