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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
funky drive still
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<blockquote data-quote="JustAwrench" data-source="post: 1170" data-attributes="member: 178"><p>OK-this is the 631 right? Your "pump" is actually a stack of three pumps-two hydrostatic pumps-one for each drive motor(left or right) and your hydraulic pump(also called charge or implement pump) bolted onto the end farthest from the engine. Worse case scenario-your hydrostatic pumps and drive motors are worn out, but these symptoms can also be caused by the little hydraulic pump on the end of the stack. It's easy to remove and inspect. It has a little rotor inside with fiber vanes. If its weak, it won't charge your hydrostatic system with enough oil to drive , hence the groaning. You can also check it with a flowrater at the auxilliaries, if equipped and you have acces to a flowrater, without removing the pump. Sorry if you already know all this. Check the hydraulic pump first, if it checks out, there are some tests for the hydrostats that are easy to do. Let us know, good luck.</p></blockquote><p></p>
[QUOTE="JustAwrench, post: 1170, member: 178"] OK-this is the 631 right? Your "pump" is actually a stack of three pumps-two hydrostatic pumps-one for each drive motor(left or right) and your hydraulic pump(also called charge or implement pump) bolted onto the end farthest from the engine. Worse case scenario-your hydrostatic pumps and drive motors are worn out, but these symptoms can also be caused by the little hydraulic pump on the end of the stack. It's easy to remove and inspect. It has a little rotor inside with fiber vanes. If its weak, it won't charge your hydrostatic system with enough oil to drive , hence the groaning. You can also check it with a flowrater at the auxilliaries, if equipped and you have acces to a flowrater, without removing the pump. Sorry if you already know all this. Check the hydraulic pump first, if it checks out, there are some tests for the hydrostats that are easy to do. Let us know, good luck. [/QUOTE]
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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
funky drive still
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