Automobile air conditioning clutch brake system

For air brake vehicles, the preload of the balance spring in the brake master cylinder shall be adjusted reasonably. If the preload is too large, there will be a hard feeling when braking. Once you step on the brake, you will brake suddenly. Such braking is very easy to cause accidents on icy roads in winter. For vehicles with hydraulic braking, you should also pay attention to check the brake oil, brake pipes and brake air pumps for leakage. If there is leakage, you should replace the brake fluid in time.

The hand brake should also be adjusted. Its braking function is used on the transmission shaft by mechanical transmission. During braking, the braking force is evenly distributed on the two rear wheels through two half axles, which can effectively prevent the brake deviation of the two rear wheels. That is to say, when the car is braked manually on ice and snow roads, it can prevent the tailspin, so as to reduce the probability of accidents. The inspection of hand brake is required when the hand brake is pulled, The sound of the lock block shall not exceed three. If it reaches five, it means that the hand brake clearance is too large, and it must be adjusted to reduce the free stroke to effectively ensure safety.

In winter, when the refrigeration system of the automobile air conditioner stops for a long time, the moving parts will "bite", which will increase the starting resistance torque, make the electromagnetic clutch of the air conditioner slip, wear excessively, and dry up the axle seams, cause adhesion and failure, resulting in leakage.

Therefore, the key point of winter maintenance for automobile air conditioning refrigeration system is to start the air conditioning refrigeration system 2-3 times a month, about 10 minutes each time. This will not consume much fuel, but it will avoid heavy losses of evaporator and compressor. Start the refrigeration system on sunny days when the temperature is higher than 10 ℃, and drive for 10 minutes on the way.

The heating air has been out of service for a long time, and it will also have faults. First, try to see if there is hot air, if the fan runs abnormally, and if the air duct is smooth. Sometimes, the problem is that the antifreeze in the heating air pipe does not flow for a long time, and the circulating pipe is blocked by condensation. Although it does not affect the driving, maintenance is very troublesome.