How to maintain the family car is the best?

Cars are guaranteed one, two and three.

Vehicle first-level maintenance inspection items

First, replace the oil, oil filter, gasoline filter and air filter.

Second, check whether the liquid level position of automobile coolant meets the requirements.

Three, check the brake and clutch liquid level position.

Four, check whether the oil level of the steering power box is in line with the regulations, and check whether the oil pipe interface of the system leaks oil.

Verb (abbreviation for verb) Check the liquid level of battery and glass washing tank.

Six, check the generator, air conditioning, water pump and booster pump belt tightness and aging.

Seven, check whether the front and rear lights of the car are complete (including: headlights, width lights, turn signals, brake lights, reversing lights, fog lights).

Eight, check the automobile tire pressure and wear, tighten the tire screws according to the specified torque, add the tire pressure to the specified model value, and change the position according to the tire wear.

Nine, check whether the automobile exhaust emissions are up to standard.

Vehicle secondary maintenance inspection items

1. The engine should be easy to start, run smoothly, exhaust normally (refers to the exhaust gas reaching the standard), the water temperature and oil pressure meet the requirements, the speed is stable, there is no abnormal sound, the belt is moderately tight, and there are no four leaks (water, oil, electricity and gas).

2. The directional free travel and toe-in meet the requirements, and the steering is light, flexible and reliable. When driving, the front wheel has no left-right swing and deviation.

3. The free stroke of the clutch meets the requirements, with convenient operation, complete separation, stable and reliable combination, no abnormal sound and no oil leakage in the hydraulic system.

4. Gearbox, drive axle, universal joint (or half shaft) transmission device, etc. Good lubrication, reliable connection, no abnormal sound and overheating, no tripping, flexible gear shifting and no oil leakage.

5. The free travel and intermittent braking of the brake pedal meet the requirements, the driving and parking brakes are good, there is no deviation and delay during braking, the inertia proportional valve works normally and there is no oil leakage.

6. The tire pressure is normal (different models have different high and low air pressure standards).

7. Cantilever and damping are fixed reliably and function normally, and the temperature of hub bearing is not too high after driving.

8 generators, starters, lights, meters, signal lights, buttons and switches are complete and can work normally.

9. Fill all lubricating points of the vehicle with lubricating oil.

10. Wash and clean the whole vehicle.

Vehicle three-level maintenance inspection items

Three-level maintenance centers on assembly disassembly, cleaning, inspection and adjustment.

Engine maintenance work:

(1) Disassemble the engine, clean and inspect all parts: the cylinder block and cylinder head should be clean and free of carbon deposit, oil stain and scale; The oil circuit is clean and smooth.

(2) The unevenness of the cylinder head shall not exceed 0.05 mm every 50 mm long.

(3) The valve seat shall not be lower than 0.5mm of the cylinder head plane (whichever is the highest point).

(4) The taper and roundness of the cylinder bore of the cylinder block shall not exceed the limit.

(5) Grinding valve: The contact surface should be smooth and well sealed, and there should be no air leakage.

(6) Replace the piston ring when necessary.

(7) Check the clearance between crankshaft main bearing and connecting rod bearing. If the gap is too large, it can be adjusted;

(8) If the bearing bush is damaged or the journal is worn, replace and re-grind the bearing and journal.

(9) removing carbon deposits; Can use scraper, shovel (or bamboo), metal brush to remove, also can use carbon scavenger to remove.

(10) Replace the cylinder gasket.

(1 1) Measure cylinder pressure: check engine speed.

Chassis maintenance operation:

(1) steering mechanism; Flexible steering, no bending and cracks in the horizontal tie rod, intact threads and keyways, flexible rotation, complete locking devices and tight bolts.

(2) Dismantling and inspection of steering gear: Dismantling and inspection, cleaning and replacing damaged parts. After assembly, it should rotate flexibly without jamming, and load test should be carried out.

(3) Dismantle and check the hand and foot brakes, and implement them according to the requirements of secondary maintenance.

(4) Check that the threads of each pipe joint and tee pipe should be intact, closely combined and without leakage. Check the brake hose, and do not rub or collide with adjacent components: the hose shall not be damaged, leaked, bulged, layered or stained with oil.