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Morooka Mk160

Discussion in 'Tool Carriers' started by Forresthyd, Mar 12, 2021.

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  1. Forresthyd

    Forresthyd New Member

    Joined:
    Mar 10, 2021
    Messages:
    1
    Location:
    Scotland
    Hello HEF, have some head scratching queries about trying to modify a morooka Park brake system.

    Already undergone some major modifications to the machine involving twin pumps capable of a combined output of 260ltr/min at 2000rpm.
    Now getting rather stumped trying to change the park brake to having an electric Activation or some sort of remote valve.

    The machine is modified to be driven externally as well as from in the cab. And trying to ensure safety by having the park brake work on a deadman style system.

    The drive control levers are spring return and work well but really needs to be onto a deadman.

    Currently have a system working of a shutoff valve installed into the system on the rear of machine that allows the brake pressure to be released when open, and when closed have installed a valve to essentially re-energise the charge pump side of the brakes working off a switch. This works with the factory park brake switch in the off position.

    Any help or pointers in this would be greatly appreciated.

    Many Thanks, Gregor.
     

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  2. lantraxco

    lantraxco Senior Member

    Joined:
    Jan 1, 2009
    Messages:
    7,457
    Location:
    Elsewhen
    I'm not clear on what exactly you're trying to accomplish, but a simple three way solenoid valve, if the machine is not equipped with one from the factory, or add one in series, or parallel with a shuttle valve, with the factory one, will take care of the brake function. Lots of possibilities either electrically or hydraulically to work together with the factory setup.

    If you want to safety the drive pumps, and at the same time lock up the park brakes, just install a large energize to open two way valve and dump the hydrostatic charge pressure off to the cooler and back to tank, when the pumps lose charge pressure the servos will spring return to neutral, if you install the dump valve(s) before the tap for the brake release it will also cause the spring brakes to apply.