What is the difference between automatic two-wheel drive and automatic four-wheel drive?

How to Add Refrigerant Oil to Car Air Conditioning?

Car air conditioning refrigerant oil addition method is: 1. Open the car hood and locate the high and low pressure pipes of the air conditioning system; 2. Check if the filling valve is qualified; 3. Connect the red and blue pipes of the air conditioning pressure gauge equipment to the high and low pressure pipes of the air conditioning system, and connect the yellow pipe to the vacuum oil extractor for 15 minutes; 4. Turn off the vacuum machine and disconnect the high pressure pipe; 5. Add the appropriate amount of refrigerant oil through the compressor channel. Car air conditioning, short for car air conditioning device, is used to adjust and control the temperature, humidity, air cleanliness and air flow in the car compartment to a better state, which can provide passengers with a comfortable riding environment and reduce travel fatigue.

3

2

Share

Does the Court Support Classifying Electric Vehicles as Motor Vehicles?

The court supports classifying electric vehicles as motor vehicles. According to the national standard for general technical conditions of electric motorcycles and electric mopeds implemented since 2010, two-wheeled vehicles weighing over 40 kilograms with a speed exceeding 20 kilometers per hour are classified as electric mopeds or electric motorcycles, falling under the category of motor vehicles. The determination of whether a vehicle is a motor vehicle is based on national standards, considering three factors: the presence of pedals, speed, and weight, with the latter two being assessed by specialized agencies. A motor vehicle is defined as a wheeled vehicle driven or towed by a power device, used for transportation on roads, carrying passengers or goods, or performing specialized operations, including certain recreational facilities (such as electric balance bikes, electric scooters, and electric bicycles). Motor vehicles can be categorized into cars and car trains, motorcycles and mopeds, tractor transport units, wheeled special-purpose machinery, and electric vehicles, among others. Non-motor vehicles refer to transportation tools driven by human or animal power on roads, as well as vehicles with power devices but designed with maximum speed, unladen mass, and dimensions that comply with relevant national standards, such as motorized wheelchairs for the disabled.

5

4

Share

Should the Front Windshield Be Tinted?

Front windshields should be tinted. The benefits of car window tinting include: 1. Heat insulation in summer, reducing air conditioning energy consumption; 2. Reduced heat loss in winter, maintaining interior temperature; 3. UV protection, prolonging the lifespan and quality of interior furnishings; 4. Reduced glare, ensuring safer and more comfortable driving. Post-tinting precautions: 1. Avoid rolling down windows for three days; 2. Do not clean the tint or activate defogger heating wires for one week; 3. Do not use fingernails or sharp objects to peel edges to prevent dirt ingress; 4. Avoid suction-cup items on the tint for 1-2 weeks; 5. Address bubbles, shifting, or blurred vision promptly with professionals to ensure driving safety.

6

2

Share

How to Maintain a Manual Transmission?

Manual transmission maintenance methods are: 1. After driving a certain mileage or returning from a long-distance trip, check whether the transmission has any oil leakage. Once oil leakage or seepage is found, immediately identify the cause and conduct timely inspection and repair; 2. The lubricating oil in the transmission should be replaced regularly; 3. Keep the transmission clean. A manual transmission is a gear-shifting device used to change the speed and torque transmitted from the engine to the drive wheels, enabling the vehicle to obtain different traction forces and speeds during stationary starts, climbing, turning, and acceleration, while allowing the engine to operate within a more favorable working range.

1

2

Share

What Causes Drum Brake Noise?

The causes of drum brake noise are: 1. The brake pads are nearing their wear limit, triggering a warning sound; 2. Foreign objects inside the brake assembly; 3. Improper installation of brake shoes, uneven wear of brake linings, or severe wear of the brake drum. Drum brakes consist of components such as the brake backing plate, wheel cylinder, brake shoes, related linkages, springs, pins, and the brake drum, and are commonly used for rear wheels. The method for removing drum brakes is: 1. Before removal, use a screwdriver to press the wedge upward through the wheel's bolt hole to retract the brake shoes; 2. Use the VW6372 special tool to remove the hub cap, pull out the cotter pin, and remove the crown nut retaining ring; 3. Remove the wheel bearing preload adjustment nut, washer, and bearing, then take off the brake drum.

15

2

Share

What is the difference between longitudinally mounted and transversely mounted engines?

The differences between longitudinally mounted and transversely mounted engines are: 1. Different driving methods: Cars with longitudinally mounted engines are rear-wheel drive; cars with transversely mounted engines are front-wheel drive. 2. Different placement methods: The longitudinally mounted engine is placed vertically; the transversely mounted engine is placed horizontally. If the axis of the engine crankshaft is arranged in the same direction as the wheel half-shaft axis, it is a transverse arrangement; if the axis of the engine crankshaft is arranged in a cross shape with the wheel half-shaft axis, it is a longitudinal arrangement. When a car adopts a front-engine front-wheel drive layout, the engine is generally arranged transversely, which allows the gearbox and reducer to be concentrated in the engine compartment, making full use of the interior space.

4

Share

What is the difference between automatic two-wheel drive and automatic four-wheel drive?

How to Add Refrigerant Oil to Car Air Conditioning?

Does the Court Support Classifying Electric Vehicles as Motor Vehicles?

Should the Front Windshield Be Tinted?

How to Maintain a Manual Transmission?

What Causes Drum Brake Noise?

What is the difference between longitudinally mounted and transversely mounted engines?

Is it illegal to hang national flags on both sides of a car?

What is the approximate lifespan of the Lingpai three-cylinder engine?

Where is the k5acc located?

What is the reason for i-stop reset after battery replacement?