"Used Road Roller - Used Bulldozer - Used Grader" Vehicle Purchase Guide ---- HeGeEr Machinery China Direct Sales Network - Shanghai Dajue Machinery Equipment Co., Ltd. Comprehensive Inspection Manual

Date:2026-07-06Views:26


Timing for buying a car

After a car has been parked overnight, some cars will have difficulty starting and show signs of oil leaks on the ground, indicating problems with the electrical or fluid systems. Therefore, a car's basic performance is best reflected in the morning, especially in summer, so it's better to be early than late! In summer, the air conditioning system should be thoroughly checked, especially in the afternoon when the temperature is high, as this is the best time to understand the working capacity of the air conditioning system. Therefore, when selecting a car, it is important to choose the right time and seize the opportunity to "inspect"

Manufacturing date

Because our country has clear regulations on the lifespan of vehicles, generally 10 years, and at most 14 years, it is essential to check the manufacturing date of the vehicle when purchasing a second-hand car to avoid buying a vehicle that is about to be scrapped. The manufacturing date of the vehicle can usually

Exercise mileage

Usually, the lifespan of a car is directly related to the duration of use and the mileage driven. Generally, after driving 150,000 to 250,000 kilometers, the car's performance will significantly decline, and its technical condition will deteriorate, requiring constant repairs or replacement of parts. You can check the mileage of a car by observing the wear on the rubber pedals of the clutch and brake. Generally, the lifespan of the clutch pedal in a manual transmission is 30,000 to 50,000 kilometers, while the pedal in an automatic transmission lasts 80,000 to 100,

Car exterior

When buying a used car, remember not to be swayed by the first impression of a stylish model or the absence of scratches on the surface, leading to an impulsive purchase. You must carefully observe the car's exterior, starting from the outside and moving inward. Pay close attention to the paint; generally, In addition, you should also check the uniformity of the gaps between the hood, doors, and trunk frame.

You need to carefully inspect the rust on the car body, as it is closely related to the original usage duration and the future lifespan of the vehicle. Otherwise, after purchasing the car, you may experience body shaking, and in severe cases, it may require welding or repairs. You can check the sealing condition and

The degree of wear is mainly assessed by looking at the front tires. If the tread is flat and the edges are completely rounded, not only is the condition of the tires poor, but it also indicates that the overall condition of the entire vehicle is likely to be problematic.

Comfort

This is judged based on the owner's subjective feelings, assessing whether the interior colors, layout, seating, and operation are convenient and easy to determine comfort. You can start the vehicle to test drive and examine the

 visibility, noise, vibration, audio system, air conditioning, etc. After this series of checks, if you are not satisfied with certain aspects, you can consider making slight modifications or decorations after purchasing the car.

In-car operating system

Sit in the driver's seat in front of the car first to feel whether the ride is comfortable and the view is wide, and then check the operating system. If you shake the steering wheel with your hand, there should be no vertical clearance. The free travel of the steering wheel should not be too large when turning, the steering wheel should feel good, and the steering should be flexible during driving. When the left foot presses the clutch pedal, it should feel light and flexible, without any heaviness or resistance. The accelerator pedal should respond quickly and return to its original position swiftly. The foot brake should also respond quickly.

Car interior

When inspecting the car's interior, you should check the dashboard, the function key switches on the steering wheel, and the indicator lights one by one to ensure they are in good condition. A good steering wheel should not have any gaps when shaken up and down, and the left and right shaking amplitude should not be You should also pay attention to whether the car door glass can be raised and lowered freely and whether the sealing is good. The surface of the seat should be clean and undamaged, and it should slide smoothly back and forth without obstruction.

Engine

Check the appearance of the engine, identify any signs of oil or water leaks, start the engine, and observe the color of the exhaust gasses. If the exhaust is a translucent light gray, it indicates that the engine is in good condition. If the exhaust is black, it means the engine is not properly tuned In addition, you can also identify the engine by sound. A clear and rhythmic sound generally indicates a good machine, but some models are designed to be relatively low-pitched. In short, the engine compartment must be clean, with no oil leaks or seepage, and the sound rhythm should not be chaotic. The engine oil should have viscosity and no metal particles, which can indicate whether the previous owner cared for and maintained the car.

Shock absorption and suspension

You can use your hands to press down on the front, rear, left, and right corners of the car with force. If the car body rebounds and can bounce freely 2-3 times after releasing, it indicates that the system is normal. If there are unusual noises or it cannot bounce automatically, it

Suitcase

Lift the cover, and if you find any signs of metalwork along the edge, it indicates that the car has been rear-ended. At this point, observe the light reflection and color difference on the rear fender (trunk side panel).

Road test inspection

Start, check if the clutch engagement is smooth, and if there is any shaking or unusual noise. Starting from a standstill and accelerating, step on the gas pedal hard to see if the acceleration is responsive. Check the acceleration on a slope to see if it has power. If the acceleration is slow and it struggles uphill, it indicates insufficient engine power.

The inspection of the transmission system can be done by coasting in neutral while driving, judging the quality of the transmission performance based on the distance of the coast.

Check the transmission to see if it feels smooth and responsive when shifting up or down, and whether there are any instances of jumping gears, gear clashing, or unusual noises.

Vehicle paperwork

After checking the various performance and configurations of the car, be sure to check whether all the necessary paperwork for the used car is complete. With July approaching, many vehicles' road maintenance fees and insurance premiums are about to expire. When purchasing a used car, you must consider these costs to avoid losses.

Additionally, when purchasing a used car, it is best to consider the following factors as a reference: Choosing the right model: Given the wide variety of used cars with different models, it is essential to consider the actual situation when making a choice. If the car is for commuting to work or family use, there is generally no need to choose a larger
Convenience of maintenance is key because there are currently many car manufacturers and complex models. Some vehicles are quite difficult to repair, and once a fault occurs, the lack of spare parts can lead to long-term parking and waiting for repairs, causing great inconvenience. Therefore, when choosing a used car, it is best

2,098 / 5,000



This is judged based on the owner's subjective feelings, assessing whether the interior colors, layout, seating, and operation are convenient and easy to determine comfort. You can start the vehicle to test drive and examine the visibility, noise, vibration, audio system, air conditioning, etc. After this series of checks, if you are not satisfied with certain aspects, you can consider making slight modifications or decorations after purchasing the car.

In-car operating system

Sit in the driver's seat in front of the car first to feel whether the ride is comfortable and the view is wide, and then check the operating system. If you shake the steering wheel with your hand, there should be no vertical clearance. The free travel of the steering wheel should not be too large when turning, the steering wheel should feel good, and the steering should be flexible during driving. When the left foot presses the clutch pedal, it should feel light and flexible, without any heaviness or resistance. The accelerator pedal should respond quickly and return to its original position swiftly. The foot brake should also respond quickly.

Car interior

When inspecting the car's interior, you should check the dashboard, the function key switches on the steering wheel, and the indicator lights one by one to ensure they are in good condition. A good steering wheel should not have any gaps when shaken up and down, and the left and right shaking amplitude should not be You should also pay attention to whether the car door glass can be raised and lowered freely and whether the sealing is good. The surface of the seat should be clean and undamaged, and it should slide smoothly back and forth without obstruction.

Engine

Check the appearance of the engine, identify any signs of oil or water leaks, start the engine, and observe the color of the exhaust gasses. If the exhaust is a translucent light gray, it indicates that the engine is in good condition. If the exhaust is black, it means the engine is not properly tuned In addition, you can also identify the engine by sound. A clear and rhythmic sound generally indicates a good machine, but some models are designed to be relatively low-pitched. In short, the engine compartment must be clean, with no oil leaks or seepage, and the sound rhythm should not be chaotic. The engine oil should have viscosity and no metal particles, which can indicate whether the previous owner cared for and maintained the car.

Shock absorption and suspension

You can use your hands to press down on the front, rear, left, and right corners of the car with force. If the car body rebounds and can bounce freely 2-3 times after releasing, it indicates that the system is normal. If there are unusual noises or it cannot bounce automatically, it

Suitcase

Lift the cover, and if you find any signs of metalwork along the edge, it indicates that the car has been rear-ended. At this point, observe the light reflection and color difference on the rear fender (trunk side panel).

Road test inspection

Start, check if the clutch engagement is smooth, and if there is any shaking or unusual noise. Starting from a standstill and accelerating, step on the gas pedal hard to see if the acceleration is responsive. Check the acceleration on a slope to see if it has power. If the acceleration is slow and it struggles uphill, it indicates insufficient engine power.

The inspection of the transmission system can be done by coasting in neutral while driving, judging the quality of the transmission performance based on the distance of the coast.

Check the transmission to see if it feels smooth and responsive when shifting up or down, and whether there are any instances of jumping gears, gear clashing, or unusual noises.

Vehicle paperwork

After checking the various performance and configurations of the car, be sure to check whether all the necessary paperwork for the used car is complete. With July approaching, many vehicles' road maintenance fees and insurance premiums are about to expire. When purchasing a used car, you must consider these costs to avoid losses.

Additionally, when purchasing a used car, it is best to consider the following factors as a reference: Choosing the right model: Given the wide variety of used cars with different models, it is essential to consider the actual situation when making a choice. If the car is for commuting to work or family use, there is generally no need to choose a larger
Convenience of maintenance is key because there are currently many car manufacturers and complex models. Some vehicles are quite difficult to repair, and once a fault occurs, the lack of spare parts can lead to long-term parking and waiting for repairs, causing great inconvenience. Therefore, when choosing a used car, it is best

2,098 / 5,000
This is judged based on the owner's subjective feelings, assessing whether the interior colors, layout, seating, and operation are convenient and easy to determine comfort. You can start the vehicle to test drive and examine the visibility, noise, vibration, audio system, air conditioning, etc. After this series of checks, if you are not satisfied with certain aspects, you can consider making slight modifications or decorations after purchasing the car.

In-car operating system

Sit in the driver's seat in front of the car first to feel whether the ride is comfortable and the view is wide, and then check the operating system. If you shake the steering wheel with your hand, there should be no vertical clearance. The free travel of the steering wheel should not be too large when turning, the steering wheel should feel good, and the steering should be flexible during driving. When the left foot presses the clutch pedal, it should feel light and flexible, without any heaviness or resistance. The accelerator pedal should respond quickly and return to its original position swiftly. The foot brake should also respond quickly.

Car interior

When inspecting the car's interior, you should check the dashboard, the function key switches on the steering wheel, and the indicator lights one by one to ensure they are in good condition. A good steering wheel should not have any gaps when shaken up and down, and the left and right shaking amplitude should not be You should also pay attention to whether the car door glass can be raised and lowered freely and whether the sealing is good. The surface of the seat should be clean and undamaged, and it should slide smoothly back and forth without obstruction.

Engine

Check the appearance of the engine, identify any signs of oil or water leaks, start the engine, and observe the color of the exhaust gasses. If the exhaust is a translucent light gray, it indicates that the engine is in good condition. If the exhaust is black, it means the engine is not properly tuned In addition, you can also identify the engine by sound. A clear and rhythmic sound generally indicates a good machine, but some models are designed to be relatively low-pitched. In short, the engine compartment must be clean, with no oil leaks or seepage, and the sound rhythm should not be chaotic. The engine oil should have viscosity and no metal particles, which can indicate whether the previous owner cared for and maintained the car.

Shock absorption and suspension

You can use your hands to press down on the front, rear, left, and right corners of the car with force. If the car body rebounds and can bounce freely 2-3 times after releasing, it indicates that the system is normal. If there are unusual noises or it cannot bounce automatically, it

Suitcase

Lift the cover, and if you find any signs of metalwork along the edge, it indicates that the car has been rear-ended. At this point, observe the light reflection and color difference on the rear fender (trunk side panel).

Road test inspection

Start, check if the clutch engagement is smooth, and if there is any shaking or unusual noise. Starting from a standstill and accelerating, step on the gas pedal hard to see if the acceleration is responsive. Check the acceleration on a slope to see if it has power. If the acceleration is slow and it struggles uphill, it indicates insufficient engine power.

The inspection of the transmission system can be done by coasting in neutral while driving, judging the quality of the transmission performance based on the distance of the coast.

Check the transmission to see if it feels smooth and responsive when shifting up or down, and whether there are any instances of jumping gears, gear clashing, or unusual noises.

Vehicle paperwork

After checking the various performance and configurations of the car, be sure to check whether all the necessary paperwork for the used car is complete. With July approaching, many vehicles' road maintenance fees and insurance premiums are about to expire. When purchasing a used car, you must consider these costs to avoid losses.

Additionally, when purchasing a used car, it is best to consider the following factors as a reference: Choosing the right model: Given the wide variety of used cars with different models, it is essential to consider the actual situation when making a choice. If the car is for commuting to work or family use, there is generally no need to choose a larger
Convenience of maintenance is key because there are currently many car manufacturers and complex models. Some vehicles are quite difficult to repair, and once a fault occurs, the lack of spare parts can lead to long-term parking and waiting for repairs, causing great inconvenience. Therefore, when choosing a used car, it is best

2,098 / 5,000


This is judged based on the owner's subjective feelings, assessing whether the interior colors, layout, seating, and operation are convenient and easy to determine comfort. You can start the vehicle to test drive and examine the visibility, noise, vibration, audio system, air conditioning, etc. After this series of checks, if you are not satisfied with certain aspects, you can consider making slight modifications or decorations after purchasing the car.

In-car operating system

Sit in the driver's seat in front of the car first to feel whether the ride is comfortable and the view is wide, and then check the operating system. If you shake the steering wheel with your hand, there should be no vertical clearance. The free travel of the steering wheel should not be too large when turning, the steering wheel should feel good, and the steering should be flexible during driving. When the left foot presses the clutch pedal, it should feel light and flexible, without any heaviness or resistance. The accelerator pedal should respond quickly and return to its original position swiftly. The foot brake should also respond quickly.

Car interior

When inspecting the car's interior, you should check the dashboard, the function key switches on the steering wheel, and the indicator lights one by one to ensure they are in good condition. A good steering wheel should not have any gaps when shaken up and down, and the left and right shaking amplitude should not be You should also pay attention to whether the car door glass can be raised and lowered freely and whether the sealing is good. The surface of the seat should be clean and undamaged, and it should slide smoothly back and forth without obstruction.

Engine

Check the appearance of the engine, identify any signs of oil or water leaks, start the engine, and observe the color of the exhaust gasses. If the exhaust is a translucent light gray, it indicates that the engine is in good condition. If the exhaust is black, it means the engine is not properly tuned In addition, you can also identify the engine by sound. A clear and rhythmic sound generally indicates a good machine, but some models are designed to be relatively low-pitched. In short, the engine compartment must be clean, with no oil leaks or seepage, and the sound rhythm should not be chaotic. The engine oil should have viscosity and no metal particles, which can indicate whether the previous owner cared for and maintained the car.

Shock absorption and suspension

You can use your hands to press down on the front, rear, left, and right corners of the car with force. If the car body rebounds and can bounce freely 2-3 times after releasing, it indicates that the system is normal. If there are unusual noises or it cannot bounce automatically, it

Suitcase

Lift the cover, and if you find any signs of metalwork along the edge, it indicates that the car has been rear-ended. At this point, observe the light reflection and color difference on the rear fender (trunk side panel).

Road test inspection

Start, check if the clutch engagement is smooth, and if there is any shaking or unusual noise. Starting from a standstill and accelerating, step on the gas pedal hard to see if the acceleration is responsive. Check the acceleration on a slope to see if it has power. If the acceleration is slow and it struggles uphill, it indicates insufficient engine power.

The inspection of the transmission system can be done by coasting in neutral while driving, judging the quality of the transmission performance based on the distance of the coast.

Check the transmission to see if it feels smooth and responsive when shifting up or down, and whether there are any instances of jumping gears, gear clashing, or unusual noises.

Vehicle paperwork

After checking the various performance and configurations of the car, be sure to check whether all the necessary paperwork for the used car is complete. With July approaching, many vehicles' road maintenance fees and insurance premiums are about to expire. When purchasing a used car, you must consider these costs to avoid losses.

Additionally, when purchasing a used car, it is best to consider the following factors as a reference: Choosing the right model: Given the wide variety of used cars with different models, it is essential to consider the actual situation when making a choice. If the car is for commuting to work or family use, there is generally no need to choose a larger
Convenience of maintenance is key because there are currently many car manufacturers and complex models. Some vehicles are quite difficult to repair, and once a fault occurs, the lack of spare parts can lead to long-term parking and waiting for repairs, causing great inconvenience. Therefore, when choosing a used car, it is bestThis is judged based on the owner's subjective feelings, assessing whether the interior colors, layout, seating, and operation are convenient and easy to determine comfort. You can start the vehicle to test drive and examine the visibility, noise, vibration, audio system, air conditioning, etc. After this series of checks, if you are not satisfied with certain aspects, you can consider making slight modifications or decorations after purchasing the car.

In-car operating system

Sit in the driver's seat in front of the car first to feel whether the ride is comfortable and the view is wide, and then check the operating system. If you shake the steering wheel with your hand, there should be no vertical clearance. The free travel of the steering wheel should not be too large when turning, the steering wheel should feel good, and the steering should be flexible during driving. When the left foot presses the clutch pedal, it should feel light and flexible, without any heaviness or resistance. The accelerator pedal should respond quickly and return to its original position swiftly. The foot brake should also respond quickly.

Car interior

When inspecting the car's interior, you should check the dashboard, the function key switches on the steering wheel, and the indicator lights one by one to ensure they are in good condition. A good steering wheel should not have any gaps when shaken up and down, and the left and right shaking amplitude should not be You should also pay attention to whether the car door glass can be raised and lowered freely and whether the sealing is good. The surface of the seat should be clean and undamaged, and it should slide smoothly back and forth without obstruction.

Engine

Check the appearance of the engine, identify any signs of oil or water leaks, start the engine, and observe the color of the exhaust gasses. If the exhaust is a translucent light gray, it indicates that the engine is in good condition. If the exhaust is black, it means the engine is not properly tuned In addition, you can also identify the engine by sound. A clear and rhythmic sound generally indicates a good machine, but some models are designed to be relatively low-pitched. In short, the engine compartment must be clean, with no oil leaks or seepage, and the sound rhythm should not be chaotic. The engine oil should have viscosity and no metal particles, which can indicate whether the previous owner cared for and maintained the car.

Shock absorption and suspension

You can use your hands to press down on the front, rear, left, and right corners of the car with force. If the car body rebounds and can bounce freely 2-3 times after releasing, it indicates that the system is normal. If there are unusual noises or it cannot bounce automatically, it

Suitcase

Lift the cover, and if you find any signs of metalwork along the edge, it indicates that the car has been rear-ended. At this point, observe the light reflection and color difference on the rear fender (trunk side panel).

Road test inspection

Start, check if the clutch engagement is smooth, and if there is any shaking or unusual noise. Starting from a standstill and accelerating, step on the gas pedal hard to see if the acceleration is responsive. Check the acceleration on a slope to see if it has power. If the acceleration is slow and it struggles uphill, it indicates insufficient engine power.

The inspection of the transmission system can be done by coasting in neutral while driving, judging the quality of the transmission performance based on the distance of the coast.

Check the transmission to see if it feels smooth and responsive when shifting up or down, and whether there are any instances of jumping gears, gear clashing, or unusual noises.

Vehicle paperwork

After checking the various performance and configurations of the car, be sure to check whether all the necessary paperwork for the used car is complete. With July approaching, many vehicles' road maintenance fees and insurance premiums are about to expire. When purchasing a used car, you must consider these costs to avoid losses.

Additionally, when purchasing a used car, it is best to consider the following factors as a reference: Choosing the right model: Given the wide variety of used cars with different models, it is essential to consider the actual situation when making a choice. If the car is for commuting to work or family use, there is generally no need to choose a larger
Convenience of maintenance is key because there are currently many car manufacturers and complex models. Some vehicles are quite difficult to repair, and once a fault occurs, the lack of spare parts can lead to long-term parking and waiting for repairs, causing great inconvenience. Therefore, when choosing a used car, it is best


Contact Information
  • Contact: David Wang (General Manager)
  • WhatsApp: +86 18817734137
  • QQ Number: 1487557311
  • Address: Intersection of Huqingping Highway and Lushen Road, Qingpu District, Shanghai, China
  • Phone: 008618817734137
  • E-mail: 1487557311@qq.com
  • Mobile phone: 18817734137
  • Postal Code: 201700
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