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Bobcat 630 Reclamation
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<blockquote data-quote="peebeeaitch" data-source="post: 61765" data-attributes="member: 8318"><p><u>27 Dec 2012</u></p><p>Right. The saga continues.</p><p>Thanks to ancomcabs suggestion above, I lifted the bucket, supported it and started removing the rear pin. The thinking was that Murphy was probably not around and that I would be able to compress the cylinder once the machine side pin had been replaced - anyway, no matter if I also had to remove the rod side, the rear pin would also need to come out.</p><p>I bashed and hammered the thing for a while - even after slacking off the hydraulics by pressing all levers and pedals - and EVENTUALLY got the rear pin out. Murphy was, in fact, lurking and I could not for the life of me compress the cylinder. So, removed the lock pin and removed the front pin. It was quite easy to remove the entire cylinder after that. I wish I hadn't.</p><p>This is the repair workmanship that greeted me:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_InletFittingRepair2.jpg" alt="2012-12-27_InletFittingRepair2.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>And, in case one thought "that doesn't look so bad", this:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_InletFittingRepair1.jpg" alt="2012-12-27_InletFittingRepair1.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>(Red wire is there so that I could mark the lines and pipes. I've found tape usually comes loose and then frustration). This is going to give way sooner or later, but I know it will be when I REALLY need the machine.</p><p>Off I went to the friendly (they get more so every time I walk in their door) hydraulics repair shop and in short order had two new complete lines with abrasion resistant covers. The chap looked positively devastated when he told me that his abrasion resistant sheathing was finished and that he would only have some in the new year.</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_NewLiftCylinderHoses.jpg" alt="2012-12-27_NewLiftCylinderHoses.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>As a precaution I cleaned out the cylinder ends to inspect. I thought there would be a lot more damage, but I think this may be OK for a while. Still worried about the bent arm though:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_CylinderRodEnd.jpg" alt="2012-12-27_CylinderRodEnd.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_CylinderBushEnd.jpg" alt="2012-12-27_CylinderBushEnd.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>The rear pin looks good. I tried to feel for a wear ridge or something to indicate imminent failure, but it seems OK to me:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_HingePinBack.jpg" alt="2012-12-27_HingePinBack.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>Same with the front pin:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_HingePinFront.jpg" alt="2012-12-27_HingePinFront.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>The cylinder was replaced and I fired her up - this time the keyswitch worked, no starting fluid, choke only!!!</p><p>Ok. Up, down, in, out - jerky. Forward, back - almost no motion. The thought was immediately oil, or the annoying little brass filter.</p><p>Opened up the middle hydraulic line and I don't think I have the brass filter anymore. Is this possible?</p><p>Bought some oil and filled it up - needed about 1/3 of the full capacity so I doubt it is an oil problem.</p><p>I am re-reading all the posts that deal with hydraulic jerkiness, lack of motion and all other symptoms. The fact that the guy that I bought it from's assessment of all other problems is more or less correct seems to indicate that the pump should be OK - it was only the left drive that he said was faulty. More tomorrow...</p></blockquote><p></p>
[QUOTE="peebeeaitch, post: 61765, member: 8318"] [U]27 Dec 2012[/U] Right. The saga continues. Thanks to ancomcabs suggestion above, I lifted the bucket, supported it and started removing the rear pin. The thinking was that Murphy was probably not around and that I would be able to compress the cylinder once the machine side pin had been replaced - anyway, no matter if I also had to remove the rod side, the rear pin would also need to come out. I bashed and hammered the thing for a while - even after slacking off the hydraulics by pressing all levers and pedals - and EVENTUALLY got the rear pin out. Murphy was, in fact, lurking and I could not for the life of me compress the cylinder. So, removed the lock pin and removed the front pin. It was quite easy to remove the entire cylinder after that. I wish I hadn't. This is the repair workmanship that greeted me: [IMG alt="2012-12-27_InletFittingRepair2.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_InletFittingRepair2.jpg[/IMG] And, in case one thought “that doesn't look so bad”, this: [IMG alt="2012-12-27_InletFittingRepair1.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_InletFittingRepair1.jpg[/IMG] (Red wire is there so that I could mark the lines and pipes. I've found tape usually comes loose and then frustration). This is going to give way sooner or later, but I know it will be when I REALLY need the machine. Off I went to the friendly (they get more so every time I walk in their door) hydraulics repair shop and in short order had two new complete lines with abrasion resistant covers. The chap looked positively devastated when he told me that his abrasion resistant sheathing was finished and that he would only have some in the new year. [IMG alt="2012-12-27_NewLiftCylinderHoses.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_NewLiftCylinderHoses.jpg[/IMG] As a precaution I cleaned out the cylinder ends to inspect. I thought there would be a lot more damage, but I think this may be OK for a while. Still worried about the bent arm though: [IMG alt="2012-12-27_CylinderRodEnd.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_CylinderRodEnd.jpg[/IMG] [IMG alt="2012-12-27_CylinderBushEnd.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_CylinderBushEnd.jpg[/IMG] The rear pin looks good. I tried to feel for a wear ridge or something to indicate imminent failure, but it seems OK to me: [IMG alt="2012-12-27_HingePinBack.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_HingePinBack.jpg[/IMG] Same with the front pin: [IMG alt="2012-12-27_HingePinFront.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-27_HingePinFront.jpg[/IMG] The cylinder was replaced and I fired her up - this time the keyswitch worked, no starting fluid, choke only!!! Ok. Up, down, in, out - jerky. Forward, back - almost no motion. The thought was immediately oil, or the annoying little brass filter. Opened up the middle hydraulic line and I don't think I have the brass filter anymore. Is this possible? Bought some oil and filled it up - needed about 1/3 of the full capacity so I doubt it is an oil problem. I am re-reading all the posts that deal with hydraulic jerkiness, lack of motion and all other symptoms. The fact that the guy that I bought it from's assessment of all other problems is more or less correct seems to indicate that the pump should be OK - it was only the left drive that he said was faulty. More tomorrow... [/QUOTE]
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