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Bobcat 630 Reclamation
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<blockquote data-quote="peebeeaitch" data-source="post: 61800" data-attributes="member: 8318"><p><u>28 Dec 2012</u></p><p>This is a view of the hydraulic "bay" under the seat:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_HydraulicOverview.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>And a close up of the block:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_HydraulicBlockCloseUp.jpg" alt="2012-12-28_HydraulicBlockCloseUp.jpg (2448×3264)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>I immediately noticed a problem with the left yankem. Pushing the stick forward, till I felt a little resistance:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_LeftArmFwd.jpg" alt="2012-12-28_LeftArmFwd.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>And back till a little resistance:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_LeftArmBack.jpg" alt="2012-12-28_LeftArmBack.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>The cause:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_LeftArmLinkPlay.jpg" alt="2012-12-28_LeftArmLinkPlay.jpg (2448×3264)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>However, I won't be worrying about this now as I still can't go forward or backward!</p><p>Again I tried to find the brass 40um filter, but if it is there, it is hiding behind the fitting that is probably 1.5" AF. I will need to get a bigger wrench this morning.</p><p>Did get the neutral charge by-pass valve out and it looks quite good:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_NeutralChargeBypass.jpg" alt="2012-12-28_NeutralChargeBypass.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>With a close up of the slightly burnished valve body:</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_NeutralChargeByPassValve.jpg" alt="2012-12-28_NeutralChargeByPassValve.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>(I assume the slight valley on the fitting is no problem. It bothers me a little that there was a slight sliver where the spring end must have shaved some of the fitting off).</p><p>Temp switch was removed and inspected. Originally I thought the silicone was there for a reason, but now I realise that it was cosmetic. What is not cosmetic was the little residue that I found on the oil side of the unit. Luckily it had adhered to the spigot and not started a ride through the hydraulic system.</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_TempSenderGasket.jpg" alt="2012-12-28_TempSenderGasket.jpg (3264×2448)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>But now I need help. This is the oft-repeated sketch from the manual (in various different views throughout the hydraulics section):</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_ValveArrangementManual.png" alt="2012-12-28_ValveArrangementManual.png (460×582)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>Looking at mine (I have labelled it with what I think are the correct sources, in the same colour as the manual):</p><p><img src="http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_HydraulicLabelled.jpg" alt="2012-12-28_HydraulicLabelled.jpg (979×1306)" class="fr-fic fr-dii fr-draggable " style="" /></p><p>Is this correct? The page from the manual does not indicate the line to the hydrostatic pump so I assume that my block is from the newer series that the manual indicates - machine serial is 4995-14265. The manual does show the hydrostatic feed line in the coloured Hydraulic System Operation section.</p><p>Is it possible that the brass filter is hiding behind the huge charge pressure fitting?</p><p>TIA.</p></blockquote><p></p>
[QUOTE="peebeeaitch, post: 61800, member: 8318"] [U]28 Dec 2012[/U] This is a view of the hydraulic “bay” under the seat: [IMG]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_HydraulicOverview.jpg[/IMG] And a close up of the block: [IMG alt="2012-12-28_HydraulicBlockCloseUp.jpg (2448×3264)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_HydraulicBlockCloseUp.jpg[/IMG] I immediately noticed a problem with the left yankem. Pushing the stick forward, till I felt a little resistance: [IMG alt="2012-12-28_LeftArmFwd.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_LeftArmFwd.jpg[/IMG] And back till a little resistance: [IMG alt="2012-12-28_LeftArmBack.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_LeftArmBack.jpg[/IMG] The cause: [IMG alt="2012-12-28_LeftArmLinkPlay.jpg (2448×3264)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_LeftArmLinkPlay.jpg[/IMG] However, I won't be worrying about this now as I still can't go forward or backward! Again I tried to find the brass 40um filter, but if it is there, it is hiding behind the fitting that is probably 1.5” AF. I will need to get a bigger wrench this morning. Did get the neutral charge by-pass valve out and it looks quite good: [IMG alt="2012-12-28_NeutralChargeBypass.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_NeutralChargeBypass.jpg[/IMG] With a close up of the slightly burnished valve body: [IMG alt="2012-12-28_NeutralChargeByPassValve.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_NeutralChargeByPassValve.jpg[/IMG] (I assume the slight valley on the fitting is no problem. It bothers me a little that there was a slight sliver where the spring end must have shaved some of the fitting off). Temp switch was removed and inspected. Originally I thought the silicone was there for a reason, but now I realise that it was cosmetic. What is not cosmetic was the little residue that I found on the oil side of the unit. Luckily it had adhered to the spigot and not started a ride through the hydraulic system. [IMG alt="2012-12-28_TempSenderGasket.jpg (3264×2448)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_TempSenderGasket.jpg[/IMG] But now I need help. This is the oft-repeated sketch from the manual (in various different views throughout the hydraulics section): [IMG alt="2012-12-28_ValveArrangementManual.png (460×582)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_ValveArrangementManual.png[/IMG] Looking at mine (I have labelled it with what I think are the correct sources, in the same colour as the manual): [IMG alt="2012-12-28_HydraulicLabelled.jpg (979×1306)"]http://bobcat.thesouthpole.co.za/BloodSweatAndTears/2012-12-28_HydraulicLabelled.jpg[/IMG] Is this correct? The page from the manual does not indicate the line to the hydrostatic pump so I assume that my block is from the newer series that the manual indicates - machine serial is 4995-14265. The manual does show the hydrostatic feed line in the coloured Hydraulic System Operation section. Is it possible that the brass filter is hiding behind the huge charge pressure fitting? TIA. [/QUOTE]
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