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  1. T

    KX 121-2 joysticks wont work?? everything else fine

    Any Maintenance been done on the pump? Pilot and pump swashplate lines get switched? Ask me why I ask.....
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    301.8 weak hydraulics

    I just went through this same issue on my kubota 121. Get the gauges on it and see what your pressures are while under operation. That will point you in the right direction. My case it turned out to be the pump producing 1500 psi on one side. The valve plate had a scratch .0015" deep...
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    some hydraulic help please !

    Sorry drive motor swashplate. The swashplate angle changes (when you select high and or low speed) in the drive motor increasing or decreasing the displacement/volume in the cylinder block in turn changing the speed of the motor. Faster = less power/torque, slower = more power/torque.
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    some hydraulic help please !

    Maybe a drive mother swashplate not actuating fully in high speed or not at all? You say they work good at slow speed.
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    Hammer for a 5 ton excavator

    Match your machine aux flow rate to the hammer flow requirement. I have a magnum on a kubota. Works great.
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    Kubota KX121-2 Hydraulic pump

    Repaired. 3000 psi both sides.
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    Kubota KX121-2 Hydraulic pump

    Update: The pump has been disassembled, "inspected". The valve plate hade .002" gouging and the cylinder block .001". The output bearing had spalling on the rollers. Valve and block have been cleaned up and lapped, output bearing and seal replaced. New seals and gasket and it's back...
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    bobcat 334 hydraulic pump

    What caused it to crack? I am going through a Kubota pump problem myself. Have you found the data plate on the pump and searching for parts that way?
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    Kubota KX121-2 Hydraulic pump

    Anybody out there know where to get a cost effective replacement pump for a KX121-2. My machine is is only getting to 1500 psi on the right track drive, boom and bucket. I swapped the pump pressure lines and the low pressure problem followed to the left drive, arm etc. I was looking at the...
  10. T

    Mini Excavator Wood Splitter

    3"x 24"
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    Mini Excavator Wood Splitter

    It will save your back that's for sure. It's now painted orange to keep the rust away.
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    Kubota KX 121-2 Boom up stops responding

    Good day all My KX 121-2 boom up stopped responding intermittently. When this happens the hydraulic fluid is at operating temperature. Everything works normal when fluid is cold. When it happens I hear chatter at the control valve. I switch the TPSS to switch the boom up control to the...
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    First NEW mini-ex purchase kx121

    You would have to call USA to find out. 1-Measure the outside diameter of all you QC bushings, 2- measure the distance between all bushings and holes ON CENTER sketch it on a piece of paper, scan and email it to me and I will draw it up for you. When you get the DWG file back from me have it...
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    First NEW mini-ex purchase kx121

    I'm Canadian eh, wedge is the dominant QC in these parts. I would need some dimensions from you to modify. USA Attachments may sell you individual ears. Let me know.
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    First NEW mini-ex purchase kx121

    Oh Calvin if you want a copy I need one of them there fancy electronic email boxes addressed to you.
  16. T

    First NEW mini-ex purchase kx121

    Not off topic then continuing on. Don't want to step on toes. The guys who posted the Email I sent the DWG file for ya's. Give them a try and post your results. Thanks
  17. T

    First NEW mini-ex purchase kx121

    Regarding ears, if you typing to me I have the DWG file for the ears. The catch is the type of bucket due to its shape. I just got three bucket blanks (no ears) and I will be drawing up the bottom (bucket mating surface) tonight to fit USA attachment buckets. We should start a new threat...
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    KX80 swing problem, wont swing

    When you find the problem it will all make sense.
  19. T

    Hammers

    Agreed, a rebuild can be cost effective. I think the risk is the cracked housing that only NDT my indicate rendering it a super duper expensive overhaul?
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    Converted Motor Grader...Towgrader

    It has it's place. I like it.
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