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Cat 305CR tool valve flow rate change

Discussion in 'Excavators' started by Phil_C, Jul 14, 2019 at 11:34 AM.

  1. Phil_C

    Phil_C Member

    Joined:
    Nov 27, 2018
    Messages:
    6
    Location:
    Australia
    Hello All
    Is it possible to reduce the flow rate to the tool valve for the left pedal? I have just purchased a tilt bucket and the circuit is way too fast to be of any use. I can add flow controls to the bucket but thought I would check to see if the valves flow rate is adjustable. DGT series.

    Thanks in advance.

    Phil
     
    heymccall likes this.
  2. Nige

    Nige Senior Member

    Joined:
    Jun 22, 2011
    Messages:
    11,189
    Location:
    G..G..G..Granville...........!!
    From the hydraulic schematic it doesn't appear as though the flow rate is adjustable on the auxiliary circuit in its "as built" form.
     
  3. John C.

    John C. Senior Member

    Joined:
    Jun 12, 2007
    Messages:
    6,161
    Occupation:
    Machinery & Equipment Appraiser
    Location:
    Northwest
    I've heard of people shimming the spool in the main valve to limit how much oil gets sent out and returns. I've also seen those needle type flow control valves in other machines. I don't remember there being any adjustable flow settings in the monitor panels on the CR series machines. Most were just a couple of gauges and indicator lights.
     
  4. Phil_C

    Phil_C Member

    Joined:
    Nov 27, 2018
    Messages:
    6
    Location:
    Australia
    Thank you both for the replies. I have purchased two reverse free flow check valves today to install in the lines on the bucket. I think that is easier than shimming the valve and won't affect other tools used on the machine.

    Regards

    Phil