One is a handbook ball valve, which is usually positioned close to the bottom of the growth because the auxiliary plumbing returns to the valve. One place permits oil to return to the auxiliary valve (bi-directional), and the other permits oil to return to the hydraulic tank (single-directional). In case you are buying an auxiliary hydraulic plumb equipment, that is the simplest to put in. The other sort of switching valve is switched between modes through choice on the excavator main pump’s console. Utilizing what is usually referred to as "breaker mode" puts the valve right into a "return to tank" place. Test it with a multimeter and substitute it if it is defective. Electrical Connections: Loose battery cables or broken wires interrupt starter energy. Inspect connections and restore wires. Beginning issues have to be addressed ASAP to keep away from being stranded on the job site.