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General Bobcat Skidsteer Forum
Bobcat 630 Reclamation
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<blockquote data-quote="peebeeaitch" data-source="post: 61772" data-attributes="member: 8318"><p>Thanks Mike. I hope the pictures help someone else like me that was new to Bobcats and didn't have the faintest idea what was being spoken about on initial read. I would have prefered if I did not have to take them though.</p><p>Been reading and just realised that I have two, hopefully independant problems.</p><p>Jerkiness in tilting and lifting is probably a bleeding issue introduced after all my line replacements (it is fed by a separate pump, I believe) which will cure itself. There is one interesting side effect. Before the line replacements, the tilt cylinder slowly creeped "down". This is now gone. But perhaps it's a result of the angle I left the bucket in after the repair of the lines. In short, I have noticed that the cylinder geometry changes dramatically with the bucket angle, so if the seals are leaking, there would be a marked change in the bleed-by if the bucket is left in one position versus another due to the forces and cylinder geometry involved.</p><p>Forward and backward motion problem is probably unrelated. If I have the brass filter, which I'm pretty sure I don't, then this may explain the absolute lack of motion power. The only other option is that the pump is bad. If I pull the left "yankem" <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />, the motor labours a little which means that the motor is working against something. I have not noticed that the right "yankem" does not do the same, but there is very little motion. Both yankems seem to be in teach mode - creep forward or back, with the left adding a bit of engine strain. But then again, I am learning to drive a half-not working Bobcat in a garage that does not belong to me and so am trying to minimise the carnage while trouble shooting - and not asking questions that have been answered 100 times.</p><p>More reading required...</p></blockquote><p></p>
[QUOTE="peebeeaitch, post: 61772, member: 8318"] Thanks Mike. I hope the pictures help someone else like me that was new to Bobcats and didn't have the faintest idea what was being spoken about on initial read. I would have prefered if I did not have to take them though. Been reading and just realised that I have two, hopefully independant problems. Jerkiness in tilting and lifting is probably a bleeding issue introduced after all my line replacements (it is fed by a separate pump, I believe) which will cure itself. There is one interesting side effect. Before the line replacements, the tilt cylinder slowly creeped “down“. This is now gone. But perhaps it's a result of the angle I left the bucket in after the repair of the lines. In short, I have noticed that the cylinder geometry changes dramatically with the bucket angle, so if the seals are leaking, there would be a marked change in the bleed-by if the bucket is left in one position versus another due to the forces and cylinder geometry involved. Forward and backward motion problem is probably unrelated. If I have the brass filter, which I'm pretty sure I don't, then this may explain the absolute lack of motion power. The only other option is that the pump is bad. If I pull the left “yankem” :), the motor labours a little which means that the motor is working against something. I have not noticed that the right “yankem” does not do the same, but there is very little motion. Both yankems seem to be in teach mode - creep forward or back, with the left adding a bit of engine strain. But then again, I am learning to drive a half-not working Bobcat in a garage that does not belong to me and so am trying to minimise the carnage while trouble shooting - and not asking questions that have been answered 100 times. More reading required... [/QUOTE]
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