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350 utility diesel hydraulic problems
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Posted by lilb67 on March 27, 2007 at 05:23:59 from (69.217.226.161):
Hello, Well I have an old 1957 International 350 Utility Diesel. And here is a little history. This tractor sat in the weather for 5yrs because of a fuel leak. I purchased it and towed it home
and found the fuel pump was bad so I removed the pump and injectors and had them rebuilt. The tractor runs fine now although the hydraulic system started working rather odd. At first the power steering and loader/3 point worked great. When the problem began with the hydraulics the loader and 3 point started operated slowly. Then in order for the loader or 3 point to work you had to turn the steering right or left, shortly after that it lost both power steering and all hydraulics. So I took the tractor to a tractor repair shop. There they had ask too run a series of tests to rule out the pump. So 2 wks and $300 later they said it was the pump. Well I purchased another pump and installed it. It is now doing almost the same thing as before when it started acting up the first time. Now the loader and 3 point go up nice and smooth but now it doesn’t have power steering, oh and you still have to turn the steering wheel right or left to get the loader and 3 point to function. The pump is making a noise as if it is low on fluid or if you turn the steering wheel full turn. So without hooking up a pressure gauge I removed the high pressure line from the steering assembly and it seemed to have plenty of pressure. Then I removed the return line from the power steering assembly to the reservoir and it seemed to have plenty of pressure there as well. So nothing seemed to be plugged for the power steering loop. I only ran the tractor long enough to make a quick check because I noticed the pump was getting hot. In the trouble shooting section of the manual it leans towards the FLOW CONTROL VALVE ASSEMBLY. Well it was removed and checked for debris and rough spots. The spring was replaced. At this point I need some help in trying to diagnose the problem. I have multiple pictures for a visual aid. All of your responses will be greatly appreciated. You can also email at bprice@mc3corp.com Thanks, Brian
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