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Tractor Talk Discussion Forum

1987 CaseIH 885/ whine in the hydraulic system

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Russ Thomas

03-24-2008 06:30:53




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I purchased this tractor last fall and it has a whine in the hydraulic system. It increases with the rpm's of the engine, however it goes away when you raise or lower the loader or three point. I have changed the filter and fluid, but the whine is still there. Everything functions as it should, the loader will pick the tractor up off the ground, but the whine is almost more than I can stand. Hay season is coming and I am not sure I will be able to stay in the cab with all this noise. Please let me know if you've had this problem and how you fixed it. Thanks

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RodInNS

03-24-2008 14:32:59




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 Re: 1987 CaseIH 885/ whine in the hydraulic system in reply to Russ Thomas, 03-24-2008 06:30:53  
I don't know that tractor's hydraulic system but what you describe sounds like the system is unloading across a relief valve. When you activate a valve the oil has another outlet and doesn't have to unload across the relief valve... so if this were a Ford system it would have a hung unload valve. Doubt the IH is much different, so I'd be looking in that direction. You need an experienced tech or an OEM manual at this point I would say...

Rod

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ChrisLSD

03-24-2008 12:29:21




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 Re: 1987 CaseIH 885/ whine in the hydraulic system in reply to Russ Thomas, 03-24-2008 06:30:53  
had a MM 670 doing that - added a gallon of ATF insteaf hydraulic fluid and made it much much better



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