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Bobcat Excavators
Bobcat 331 - Slew not holding, bucket not overpowering thumb, foam in reservoir
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<blockquote data-quote="melli" data-source="post: 97519" data-attributes="member: 7164"><p>Nobody got nothing? Well, after pouring over schematics, I figured I ought to try looking at build up valve on manifold. A - It is the easiest thing I can pull out and B - it actually might be the problem. It might be dirty/stuck open, and it is connected between pump and swing motor (sits on manifold). Apparently, it keeps the line charged at 150psi. If stuck open, it would allow fluid to backtrack to pump...and when at idle, the house was creeping downhill. Not sure if it would contribute to foaming in the tank.... Not sure what is happening with thumb (aux) overpowering bucket...could just be a port relief valve not doing it's thing... Just odd everything happened at once....they must be connected. Actually made up a test kit to check pressures at ports on manifold, but it appears I have the wrong quick connect...rectify that tomorrow I hope.</p></blockquote><p></p>
[QUOTE="melli, post: 97519, member: 7164"] Nobody got nothing? Well, after pouring over schematics, I figured I ought to try looking at build up valve on manifold. A - It is the easiest thing I can pull out and B - it actually might be the problem. It might be dirty/stuck open, and it is connected between pump and swing motor (sits on manifold). Apparently, it keeps the line charged at 150psi. If stuck open, it would allow fluid to backtrack to pump...and when at idle, the house was creeping downhill. Not sure if it would contribute to foaming in the tank.... Not sure what is happening with thumb (aux) overpowering bucket...could just be a port relief valve not doing it's thing... Just odd everything happened at once....they must be connected. Actually made up a test kit to check pressures at ports on manifold, but it appears I have the wrong quick connect...rectify that tomorrow I hope. [/QUOTE]
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Bobcat 331 - Slew not holding, bucket not overpowering thumb, foam in reservoir
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