Diesel generator sets as an emergency spare power supply after power failure, most of the time crew is in standby spare. After the electric power failure, the unit needs \"Starting, and powered up immediately.\" Daily to strengthen the maintenance and maintenance of the generator set is critical, as the unit is in a static, itself is complicated with oil, cooling water, diesel, air, etc., the crew occurs,\"stopping \"The phenomenon. 1. Water enters the diesel engine due to condensation in the air in the air, the water is formed in the inner wall of the tank, flowing into the diesel, causing the diesel water content to exceed the standard, such diesel enters the engine high-pressure oil pump, rust precision coupling - Plunger, severe damage unit, regular maintenance is effective and avoidable. 2, the maintenance of the engine oil (one year) engine oil is mechanical lubrication, while the oil has a certain stay period, long time