What Does the Second Maintenance of a Vehicle Include?
3 Answers
Car second maintenance includes the following items: 1. After the engine undergoes the three-clean and three-filter operations, it should start easily, run smoothly, have normal exhaust (meaning the tail gas meets standards), with water temperature and oil pressure meeting requirements, stable speed, no abnormal noises, proper tension of all belts, and no leaks (water, oil, electricity, or gas). 2. The steering free travel and toe-in should meet requirements, with steering being light, flexible, and reliable. The front wheels should not wobble left and right or pull to one side while driving. 3. The clutch free travel should meet requirements, with operation being convenient, separation thorough, engagement smooth and reliable, no abnormal noises, and no oil leaks in the hydraulic system. 4. The transmission, drive axle, universal joint (or half-shaft) transmission device, etc., should be well lubricated, with reliable connections, no abnormal noises or overheating, no gear jumping, flexible gear shifting, and no oil leaks. 5. The brake pedal free travel and brake clearance should meet requirements, with driving and parking brakes functioning well, no pulling to one side or dragging during braking, the inertia proportion valve working normally, and no oil leaks. 6. Tire pressure should be normal (different vehicle models have different high and low pressure standards). 7. The suspension arms and shock absorbers should be fixed reliably, functioning normally, with the wheel hub bearing temperature not overheating after driving. 8. The generator, starter, lights, instruments, signal lights, buttons, switches, and other auxiliary equipment should be complete and intact, functioning normally. 9. All lubrication points of the vehicle should be filled with lubricating oil. 10. The entire vehicle should be washed and cleaned.
I remember during my last second maintenance service, the technician first changed the engine oil and oil filter, which are the core items for every maintenance. Then they checked the tire condition, measured the tire pressure, and rotated the tires to ensure even wear on all four wheels. All the chassis bolts were tightened, and the brake pads were measured for thickness—they said since I drive gently, the pads could last another six months. The cabin air filter was replaced with a new one, as they explained it's essential to change it during spring due to high pollen levels. Finally, they gave the car a complimentary wash, and the whole process took just an hour. After the second maintenance, I clearly felt the throttle response became smoother, and the steering wheel vibrated less than before. I highly recommend sticking to this basic maintenance schedule.
My second-hand car's second maintenance cost me 600 yuan, mainly including five parts: first, the old engine oil was completely drained and replaced with new oil, and the oil filter was replaced simultaneously; then, the four tires were removed for dynamic balancing, with the front wheels adjusted to the rear; rust remover was sprayed on every connection point of the chassis, as the mechanic said city driving tends to accumulate mud; the brake fluid level was checked and found to be sufficient; the battery terminals were sanded to prevent oxidation. What surprised me was the free disinfection of the air conditioning system, which significantly reduced the odor from the vents. After the maintenance, the fuel consumption dropped by 0.3 liters, making this investment quite worthwhile.
