2. Remove the oil filler bolt (i.e., the oil dipstick).
3. Place an oil pan underneath the engine and remove the oil drain screw so that the oil can be discharged from the crankcase.
4, check the oil drain screw, sealing ring and rubber ring, if damaged, please replace immediately.
5. Reinstall the oil drain screw and tighten it.
6, lower the oil to the upper part of the mesh grid of the oil scale.
Diesel generator set of the role of oil:
1, lubrication: between the piston and the cylinder, the main shaft and the axial tile between the existence of rapid relative sliding, to prevent the parts of the rapid wear and tear, it is necessary to establish a film of oil between the two sliding surfaces. There is enough thickness of the oil film will be relative sliding parts surface separation, so as to achieve the purpose of reducing wear.
2, auxiliary cooling cooling: oil because of the lower specific calorific value, and in the engine, itself does not have a cooling effect. But the engine due to fuel combustion heat, in the engine work, the oil can bring the heat back to the oil tank and then distributed to the air to help the water tank cooling engine, really play a role in cooling the engine shell outside the water (or antifreeze liquid class).
3, cleaning: good oil will be able to engine parts on the carbide, sludge, wear metal particles through the cycle back to the oil tank, through the flow of lubricating oil, flushing the parts of the work surface of the dirt produced.
4, sealing leakage: oil can form a seal between the piston ring and piston, reducing gas leakage and preventing the entry of external pollutants.
5, rust and corrosion: lubricating oil can be absorbed on the surface of the parts to prevent water, air, acids and harmful gases and parts of the contact.
6, shock absorption buffer: when the engine cylinder port pressure rises sharply, suddenly exacerbate the piston, piston chip, connecting rod and crankshaft bearings on the load is very large, the load through the bearing transfer lubrication, so that the impact of the bearing load to play a cushioning effect.
7. Anti-friction: adding lubricant to the rubbing surface can reduce the coefficient of friction, thus reducing the frictional resistance, saving energy consumption, reducing wear: lubricant between the friction surface can reduce the friction caused by abrasive wear, surface fatigue, adhesive wear.