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International 574 hydraulic problem

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Author  [Modern View]

06-19-2011 15:57:31

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I recently changed the hydraulic fluid and filter in my International 574 tractor with an International 2050 front loader and now the rear lift, steering and PTO will not work. Everything worked fine before the fluid change, but was starting to get whining noise with the hydraulics.'the fluid was very milky from water/moisture. The front loader operates as it should. I used a Wix filter and Mastertran fluid (New Holland replacement for HyTran). Do I have air somewhere in the system? Anyone know how to bleed the system? I have drained the fluid and "flushed" the case with diesel, re-filled with fluid and installed a new filter, but no change.

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06-28-2011 10:16:02

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 Re: International 574 hydraulic problem in reply to Okie574, 06-19-2011 15:57:31  
First, thank you to those who have posted suggestions! I apologize for my delay, but yesterday was the first opportunity I had to try your suggestions.

I started adding additional fluid and once I had added about 2 gallons, I heard fluid dripping from under the tractor. It was leaking out of the filter housing. The housing was snug, but I clearly did not have the gasket positioned properly. I loosened it a bit and rotated the housing as I tightened the through bolt until it quit leaking. I added the rest of the fluid, disconnected the power steering line under the MCV and fired it up. Fluid started flowing out of the PS line immediately. I re-connected the PS line, started the tractor back up and all of the hydraulics worked fine - woo-hoo!!!

Again, thank you for the help!

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Tod Michigan

06-22-2011 19:16:48

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 Re: International 574 hydraulic problem in reply to Okie574, 06-19-2011 15:57:31  
I agree with the other posts. I had milky fluid and was told to over fill by 5 gallons, which does not hurt anything to maintain This level, so I could eliminate any internal suction leaks that could be introducing air into the fluid. If after adding the additional fluid, you still have milky fluid, your gonna have to crack the Tractor and replace an oring like seal between the transmission /differential and the T/A section. This is where the suction tube connects between the 2 sections and drops down into the differential resivour. By the way, over filling will not remove the oring seal issue. Hope this helps, good luck.

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06-19-2011 20:26:06

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 Re: International 574 hydraulic problem in reply to Okie574, 06-19-2011 15:57:31  
I have a 574, had whining too.didn,t have loader on it at that time. The screen in the filter housing behind the filter was clogged. Yours may be too.

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06-19-2011 17:36:18

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 Re: International 574 hydraulic problem in reply to Okie574, 06-19-2011 15:57:31  
Hi Okie, do I read you correctly that the front loader works OK? How is the loader connected to hydraulic system? Is it connect to rear remote outlets? Is there a separate hydraulic pump connected to crankshaft on front of engine?
Is the transmission full or over full on the dipstick. It does not hurt to overfill by 5 gal.
Was the filter physically the same as the old one?

The 574 only has one hydraulic pump that puts out about 12gpm and the MCV splits the flow into 3 gpm for PS,PB and oil cooler and 9 gpm for 3pt and rear remotes.
Sometimes after a drain and refill, you have to place a bucket under MCV valve and loosen the connection to the PS line on the left side of MCV valve. The MCV Valve is behind the hydraulic filter. Start tractor and let run until hydraulic pump primes itself.

Hope this helps


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