To improve the performance of a hydraulic pump unloading feature and to eliminate a noise problem induced by water hammer effect on a Case model 821 Wheel Loader, a unique soft-shift, spring-biased cartridge logic element was designed and used in combination with a metering pressure sequence valve. The result was a marked improvement in the pump unloading transition and in reduction of noise.


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    Title :

    Soft Shift Pump Unloading Valve


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Earthmoving Industry Conference & Exposition ; 1992



    Publication date :

    1992-04-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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