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Farm Machinery
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JD 2850 Loss of Hydraulics
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<blockquote data-quote="Tractortech" data-source="post: 6937785" data-attributes="member: 13204"><p>I've seen one of the roll pins in the filter bypass valve break occasionally but that's not intermittent.</p><p>Has the hydraulic pump been out?? I've seen people put it back in, dislodge the key on the shaft so it's only driving on the shaft tightness.</p><p>The bypass valve is above the filter so you'll not loose any oil. Take care putting it back, it only goes one way. I assume you have the correct transmission oil filter AR75603 installed and the plate and spring are correctly located below it??</p><p>I've just read previous posts.. </p><p>The handbrake shaft if correctly installed may possibly have some endfloat but will have no effect on the service brakes as they are completely independent of one another. </p><p>Is the tick over set correctly at 800 rpm?? </p><p>Does the light come on with the Hi Lo in High, low or both?? What oil are you using in the transmission?? </p><p>If your crane is closed centre with the relief valve is set to 190 bar or more and no single acting rams, I'd put the return into the transmission oil filter bowl..</p></blockquote><p></p>
[QUOTE="Tractortech, post: 6937785, member: 13204"] I've seen one of the roll pins in the filter bypass valve break occasionally but that's not intermittent. Has the hydraulic pump been out?? I've seen people put it back in, dislodge the key on the shaft so it's only driving on the shaft tightness. The bypass valve is above the filter so you'll not loose any oil. Take care putting it back, it only goes one way. I assume you have the correct transmission oil filter AR75603 installed and the plate and spring are correctly located below it?? I've just read previous posts.. The handbrake shaft if correctly installed may possibly have some endfloat but will have no effect on the service brakes as they are completely independent of one another. Is the tick over set correctly at 800 rpm?? Does the light come on with the Hi Lo in High, low or both?? What oil are you using in the transmission?? If your crane is closed centre with the relief valve is set to 190 bar or more and no single acting rams, I'd put the return into the transmission oil filter bowl.. [/QUOTE]
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JD 2850 Loss of Hydraulics
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