Second-level maintenance is to drive a certain mileage of motor vehicles to check, adjust the center of the maintenance operation. Maintenance scope, in addition to the first level of maintenance operations, check and adjust the engine and electrical equipment, dismantle the oil pan and oil filter, check and adjust the steering, braking mechanism, dismantle the front and rear wheel bearings. Add lubricating oil, dismantle and inspect the tires, and carry out the transposition, etc.. Its purpose is to maintain the vehicle parts, mechanisms and assemblies have good working performance, to ensure its normal operation between two secondary maintenance.?
The second level of maintenance is carried out by the maintenance enterprise. Its operation center content in addition to the first level of maintenance operations, in order to check, adjust the turn signal, steering rocker arm, brake shoes, suspension and other easy to wear or deformation of the safety components, and dismantle the tires, tire shift. Vehicle secondary maintenance should be tested before the diagnosis and technical evaluation, according to its results, to determine the additional work.
Automotive secondary maintenance maintenance process engine cleaner is used to clean the engine block inside the engine to increase the engine working resistance of the sludge, black carbon, and impurities used to clean the inside of the cylinder block, the fluidity of the new oil will also be improved, the new oil will also be guaranteed. Engine protectant is to reduce the engine in the cold start and sustained high temperature state.