John Deere Low Pressure Return - The Combine Forum
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post #1 of 7 (permalink) Old 09-12-2018, 09:53 AM Thread Starter
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John Deere Low Pressure Return

Is this just a regular Pioneer fitting on the hose? The case drain is the usual flat fitting, but this looks like a standard coupler. On Case IH tractors they are a large 3/4" fitting, but Deere is telling me these take a standard coupler. Does that allow enough flow so as not to pressurize the case drain?


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post #2 of 7 (permalink) Old 09-12-2018, 09:56 AM
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What model ? It wasnt till later on in the 9000 series they went to flat face fittings. The orignal kit came with the smaller pioneer fitting when I worked jd same guys changed them to the normal sized pioneer.

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post #3 of 7 (permalink) Old 09-12-2018, 10:14 AM Thread Starter
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Originally Posted by Grainline View Post
What model ? It wasnt till later on in the 9000 series they went to flat face fittings. The orignal kit came with the smaller pioneer fitting when I worked jd same guys changed them to the normal sized pioneer.
Sorry. 9620RX. Seems like we had larger fittings on the low pressure return on our old Case IH 485Q.
The case drain fitting looks right. The return is not what I was expecting. This is hooking up to an air drill with a large hydraulic fan.

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post #4 of 7 (permalink) Old 09-12-2018, 12:15 PM
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Ya Deere uses 1/2 pioneer couplers for the power beyond pressure and return, seems too small but it works.

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post #5 of 7 (permalink) Old 09-12-2018, 10:31 PM
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Some of them use a male tip with no ball in it for better flow
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post #6 of 7 (permalink) Old 09-12-2018, 10:41 PM
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That would likely be a load sense line on the power beyond
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post #7 of 7 (permalink) Old 09-13-2018, 09:50 AM Thread Starter
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Thanks guys. I'll give it a go.

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