-Assembly of newly delivered Komatsu 930E-4, Torqueing of bolts, Fitting key for front suspension, Filling suspensions with oil to correct oil level and charging suspensions withnitrogen, Lifting and riggingo Wheel motors and park brakes- Maintaining and checking for wear on planetary gear system in wheel motors, Maintaining and replacing park brakes, Bleeding of park brakes following procedure, Measuring with vernier and shimming following shimming procedureo Diesel and hydraulic tank- Replacing mountings, Tapping holeso Axle Box- Cutting out old bushes using a cutting torch and putting in new bushes using liquidnitrogen, Removing and replacing bearings, Removing and replacing high voltage cables, Cutting and crimping high voltage cables.o Engine and Generator- Splitting engine and generator measuring engine endflow, Measuring generator and engine with vernier for shimming following shimmingprocedure, Electrical Componentso Traction motor- Meggar testing for testing and replacing magnetic speed sensors.o Resistor Grids- Testing grids with meggar and multimetero Capacitors, Bus-bars and IGBTs- Testing with meggar and multimeter, Discharging capacitors, Connecting fibre optic cableso Connect DC grid box cables into panels.o Connect high voltage cableso Fault finding on electrical systems following schematics and diagrams.o Hydraulic pumps- Testing pressures, stripping piston and gear pumpso Hoist cylinders 3 stage telescopic hydraulic cylindero Charging accumulator with nitrogen following charging sequenceo Fault finding on hydraulic systemo Replacing hydraulic and engine oil filter, checking for foreign materials forindication of wear.o Draining and filling hydraulic and engine oil and checking the relevant viscosity, takingoil samples and having oil samples tested for wear.o Changing air intake filters.o Replacing damaged or worn parts.o Repairing damaged partso Maintenance on colling systemo Maintenance on fuel systems