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Cattle Boards
Trucks, Tractors & Machinery
hydraulic - front end loader question
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<blockquote data-quote="lavacarancher" data-source="post: 755005" data-attributes="member: 9198"><p>CF is right on the money. This "box" converts the movement of the joystick cables to valve movement. The valves in turn direct the hydraulic pressure to the appropriate cylinders. </p><p></p><p>There is nothing external to this valve assembly that could leak except a few O-rings - unless the case is cracked. Carefully remove the hoses (mark them where they go), remove the hose to pipe thread adapters that screw into the controller and remove the O-rings between the adapters and the case. Try to get them off in one piece. There may also be back-up rings in the gland but I doubt it. I think this application is a surface seal type and not a rod seal gland. Take the O-rings to a real, honest-to-God hydraulic shop and get them to size the O-rings and replace them. Use Parker or Parco O-rings, FEP, 90 durometer, only. You can probably get O-rings from your local tractor place or hardware store but then you will be doing this all over again in a couple of months. Your talking about $10 worth of good O-rings or $2 worth of junk O-rings.</p><p></p><p>I almost forgot. Get the hydraulic shop to give you a sample of Parker lube to lubricate the O-rings before you tighten the adapter fittings back up. You don't want to tear the rings before you have a chance to use the tractor. Be careful when you're putting the O-rings on the fittings to not scratch them or damage them.</p></blockquote><p></p>
[QUOTE="lavacarancher, post: 755005, member: 9198"] CF is right on the money. This "box" converts the movement of the joystick cables to valve movement. The valves in turn direct the hydraulic pressure to the appropriate cylinders. There is nothing external to this valve assembly that could leak except a few O-rings - unless the case is cracked. Carefully remove the hoses (mark them where they go), remove the hose to pipe thread adapters that screw into the controller and remove the O-rings between the adapters and the case. Try to get them off in one piece. There may also be back-up rings in the gland but I doubt it. I think this application is a surface seal type and not a rod seal gland. Take the O-rings to a real, honest-to-God hydraulic shop and get them to size the O-rings and replace them. Use Parker or Parco O-rings, FEP, 90 durometer, only. You can probably get O-rings from your local tractor place or hardware store but then you will be doing this all over again in a couple of months. Your talking about $10 worth of good O-rings or $2 worth of junk O-rings. I almost forgot. Get the hydraulic shop to give you a sample of Parker lube to lubricate the O-rings before you tighten the adapter fittings back up. You don't want to tear the rings before you have a chance to use the tractor. Be careful when you're putting the O-rings on the fittings to not scratch them or damage them. [/QUOTE]
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hydraulic - front end loader question
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