This project describes different case studies of hydraulic failure in gold mining machines, the research was conducted to know a nd understa nd the components, construction, location, function, circuit diagram a nd the case studies of different failures in the hydraulic systems.
The case study includes all mobile machines that are used in the gold mining site which they have different types, sizes a nd applications. Hydraulic system consists of a prime mover engine o r electrical moto r to help in driving the hydraulic pump which draws the hydraulic oil fr om the reservoir via filter in the suction line a nd delivers it to the direction control valve via relief valve in the delivery line. Wo r k is done smoothly by converting mechanical energy into hydraulic energy a nd then back to mechanical energy which is used to move the hydraulic cylinder linearly o r rotate the hydraulic moto r . Most problems of hydraulic failure in gold mining machines on field site are caused by either contamination o r climate condition (temperature). Also usage of old a nd outdated of machines a nd lack of maintenance are other facto r s affecting the machines perfo r mance. These problems lead to increase the down time a nd decrease the productivity.