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What is the standard for brake disc wear replacement?

2 Answers

DavidAnn

07/28/25 2:52pm

From a theoretical perspective, the maximum wear limit for brake discs is 2mm. Once this limit is reached, it is essential to replace the brake disc with a new one. Below is an introduction to brake discs: 1. Replacement frequency: As an object that wears together with the brake disc, the higher the wear level of the brake pads, the higher the wear level of the brake disc. If the brake pads are replaced frequently, it is necessary to promptly check the wear level of the brake disc. 2. Wear condition: During normal use, the brake disc may develop deep grooves or uneven wear due to foreign objects or quality issues with the brake disc itself. If the wear level across the disc surface is inconsistent, it should be replaced immediately to avoid safety issues. 3. A certain rule: For example, replacing the brake disc every two brake pad replacements is a good practice. 4. Personal driving habits: For instance, the replacement cycle for the brake discs of the main drive wheels is generally 60,000 to 80,000 kilometers, while the lifespan of the driven wheels can reach about 100,000 kilometers.

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McHenry

08/11/25 10:41pm

Having driven for over a decade, the brake disc replacement criteria mainly focus on three aspects. The most intuitive method is to check the groove depth on the brake disc—typically, if the wear exceeds 1.5mm, it's time to consider replacement. The dashboard warning light illuminating is also a crucial signal, as many modern vehicles come equipped with wear sensors. Paying attention to abnormal conditions during daily driving is essential, such as steering wheel vibration during braking or hearing metal grinding sounds, which usually indicate the brake pads have reached their wear limit. Once, I ignored such a warning and experienced noticeably reduced braking force at high speeds, which scared me into heading straight to the repair shop. During regular maintenance, it's best to have a mechanic measure with calipers—safety comes first. Don't wait until the brake pad backing plates are worn out to replace them, as that will result in higher repair costs.

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At how many kilometers should the timing belt of the Magotan be replaced?

Magotan's timing belt should be replaced every 150,000 to 200,000 kilometers. The functions of the timing belt are as follows: Drives the engine's valve train: It ensures that the engine's intake and exhaust valves open or close at the appropriate times to guarantee normal air intake and exhaust in the engine cylinders. Timing chain drive function: The chain drive method offers reliable transmission, good durability, and space-saving benefits. The entire system consists of components such as gears, chains, and tensioning devices. Among these, the hydraulic tensioner can automatically adjust the tension force, maintaining consistent chain tension throughout its lifespan, which is maintenance-free and matches the engine's lifespan. Durability of the timing chain: The timing chain has inherent advantages of being sturdy and durable, providing peace of mind without worrying about "long-term neglect." The drawbacks of the timing chain only begin to appear when the vehicle's total mileage reaches 100,000 kilometers.

What Causes High Coolant Temperature in Magotan?

High coolant temperature in Magotan is caused by reasons such as insufficient coolant or a dirty radiator. The specific causes are as follows: Insufficient Coolant: This requires inspection and is basically the only item you can check yourself. If you're on the highway or in a remote area without coolant on hand, you can temporarily use water as a substitute. Be careful not to immediately open the radiator cap or reservoir cap after stopping the car, as the internal pressure is too high and opening it may cause instant ejection. Wait for the temperature to cool down slightly before slowly opening the reservoir cap. Dirty Radiator: The radiator has many pores formed by cooling fins, which can easily accumulate fluff, sludge, and other debris, reducing ventilation and cooling efficiency. In winter, poor cooling efficiency may not be a big issue due to the low ambient temperature. However, in summer when the ambient temperature is already high, a clogged radiator with poor cooling can easily lead to high coolant temperature. This issue can be resolved simply by cleaning the radiator.

What grade of gasoline should a Magotan 1.8T use?

Magotan 1.8T requires 95 or higher octane gasoline. The selection of gasoline grade and refueling precautions are as follows: Gasoline grade selection: Common gasoline grades in China mainly include 92 and 95, among others. The gasoline grade indicates the octane number of the gasoline, and gasoline with a higher octane number has better anti-knock performance. Diesel grades are different from gasoline, as diesel grades represent the freezing point. Refueling precautions: Try not to wait until the fuel warning light comes on before refueling. This is because the fuel pump is located inside the fuel tank and operates at a high temperature when running continuously. Being immersed in fuel helps to effectively cool it down. When the fuel warning light comes on, it means the fuel level is already below the fuel pump. If you always wait until the light comes on to refuel, it will shorten the service life of the fuel pump. Having too little fuel or running out of fuel can also burn out the fuel pump. If the vehicle has been driven for more than 30,000 kilometers, extra caution is needed. When the fuel level is too low, the fuel pump may draw up sediment from the bottom of the tank, which can easily clog the fuel pump or block the fuel line.

What are the reasons for a faulty wheel speed sensor in the Magotan?

The damage to the Magotan's wheel speed sensor is caused by factors such as a dirty sensor head or damaged sensor wiring harness. The specific reasons are as follows: Dirty sensor head: A dirty sensor head or contamination by magnetic materials can lead to the failure of the wheel speed sensor. If the wheel speed sensor frequently malfunctions after driving through water, muddy roads, sandy areas, etc., it is likely just dirty and can be cleaned to resolve the issue. External force damaging the wheel speed sensor wiring harness: In models produced before 2011, the wheel speed sensor wiring harness did not have extra length reserved, which often resulted in the harness being pulled apart when the steering wheel was turned to its limit. By modifying the wheel speed sensor bracket to create extra length for the wiring harness, the issue can be resolved after replacement, preventing further damage.

Do U-turns in the left-turn waiting area require observing traffic lights?

When making a U-turn in the left-turn waiting lane, it is necessary to observe the traffic signals. If the left turn is red and you are the first in line, you should enter the waiting area instead of waiting at the intersection. When the left-turn signal turns green, you can start making a U-turn from the middle of the road. If you are not first in line, as long as you have passed the pedestrian crosswalk, you can make a U-turn at any dashed line in the left-turn waiting area. Location of the left-turn waiting area: The left-turn lane has an extended white dashed line frame several meters long, directly connecting to the middle of the road. These white dashed lines mark the "left-turn waiting area." Scenarios where U-turns are allowed: Intersections with U-turn signs permit U-turns: If there is a clear U-turn sign at the intersection, you can make a U-turn. If there is a U-turn traffic light, follow its instructions. If there is no traffic light, make the U-turn based on the specific situation, ensuring it does not hinder other vehicles or pedestrians. Intersections without explicit no-U-turn or no-left-turn signs allow U-turns: If there is no clear prohibition against U-turns, you can make one. "No explicit prohibition" means the intersection lacks signs like "No U-turn," "No left turn," or solid center lines, in which case you can safely make a U-turn. Yellow grid lines also permit U-turns: Yellow grid lines are no-stopping zones marked at intersections prone to congestion due to temporary stops, important facility entrances, or other designated areas. Stopping on these lines (including waiting for traffic lights) is a violation. Although stopping is prohibited in yellow grid zones, U-turns are allowed. As long as there is no central barrier, yellow grid lines are equivalent to "U-turn permitted." Intersections with U-turn traffic lights: This is straightforward—if there is a U-turn light, follow it; U-turns are only allowed on green. When no-left-turn and U-turn-permitted signs appear together: U-turns are allowed, but left turns are prohibited. Note that "No U-turn" is not the same as "No left turn." Precautions when making U-turns at intersections: Observe road markings—if they are solid lines, U-turns are prohibited under any circumstances. Continue driving to find a suitable U-turn spot. If there is a "No left turn" sign, even without a "No U-turn" sign, U-turns are not allowed at that intersection because U-turns inherently involve a left turn. U-turns must be made from the innermost left-turn lane. If you are in the second left-turn lane, U-turns are not permitted at that intersection. Always yield to straight-moving vehicles and only make a U-turn if it does not interfere with their normal flow. Otherwise, you will bear full responsibility for any accidents. Near intersection stop lines, lanes usually have guiding arrows. The leftmost lane does not always have a left-turn arrow—if it has a straight arrow, U-turns are prohibited even without explicit no-U-turn signs.

What are the body dimensions of the Malibu XL?

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