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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
Bobcat 643 disconnect u-joint and buying manuals
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<blockquote data-quote="Tazza" data-source="post: 10114" data-attributes="member: 82"><p>Hopefully that is where the air is coming from. Are you sure its coming from the middle of the pump? Its really hard to see under the pump to know 100% where the oil is coming from. Its unusual for it to leak between sections but i guess anything is possible. Most pump leaks are from the seal where the pump connects to the motor.</p><p>So you mention that using the hydraulics is all jumpy too? not just the hydrostats? For it to have that sor tof problem you have a lot of air coming in. Usually a pluged filter will cause airation of the oil but it will only be a problem with the drive not the hydraulics.</p><p>I would start with the oil leak and work from there. Sometimes the hose that twists from the port block to the bottom of the control block (return line) is a problem, it may be an idea to check that hose too. There is also a small hose that runs under the pump from the motors, this could have worn through causing a leak?</p><p>If the machine is dirty give it a real good clean with de-greaser and a pressure washer goes well here too (steam is even better). This will help you find out just where the leak(s) are coming from.</p></blockquote><p></p>
[QUOTE="Tazza, post: 10114, member: 82"] Hopefully that is where the air is coming from. Are you sure its coming from the middle of the pump? Its really hard to see under the pump to know 100% where the oil is coming from. Its unusual for it to leak between sections but i guess anything is possible. Most pump leaks are from the seal where the pump connects to the motor. So you mention that using the hydraulics is all jumpy too? not just the hydrostats? For it to have that sor tof problem you have a lot of air coming in. Usually a pluged filter will cause airation of the oil but it will only be a problem with the drive not the hydraulics. I would start with the oil leak and work from there. Sometimes the hose that twists from the port block to the bottom of the control block (return line) is a problem, it may be an idea to check that hose too. There is also a small hose that runs under the pump from the motors, this could have worn through causing a leak? If the machine is dirty give it a real good clean with de-greaser and a pressure washer goes well here too (steam is even better). This will help you find out just where the leak(s) are coming from. [/QUOTE]
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Bobcat 643 disconnect u-joint and buying manuals
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