Dos and Don'ts
Do not allow anyone to be under the vehicle with the weight of the vehicle resting solely on the jack. Always install supports specifically designed for this purpose, which will ensure the necessary stability of the raised vehicle.
Do not first loosen the high tightening torque of the wheel nuts if the car has already been jacked up - this may cause the car to fall.
Do not start the engine without making sure the gear shift lever is in neutral (or Park position with automatic transmission), and also that the parking brake is engaged.
Do not remove the radiator cap if the coolant is at a high temperature. Wait for the fluid to cool or relieve pressure in the system by covering the radiator cap with a piece of cloth and slowly unscrewing it, allowing steam to escape under pressure.
Do not attempt to drain engine oil unless you are confident that it will not cause scalding.
Do not touch engine or exhaust system components until they have cooled down. This will help avoid getting burned.
Do not pour toxic fluids such as gasoline, antifreeze and brake fluid into the hose, or allow them to come into contact with your skin.
Do not inhale dust generated by the wear of brake pads - it is hazardous to health (see paragraph "Asbestos" below).
Do not allow spilled motor oil or other lubricants to remain on the floor. Wipe them off before anyone slips.
Do not use wrenches with a loose grip or other tools that may break off, as this may result in personal injury.
Do not try to lift a heavy element yourself - seek outside help.
Don't rush through your work - take breaks.
Do not allow children or pets to play in or near a vehicle that is being serviced or repaired.
Eye protection should be worn when using power tools and when working under vehicles.
Loose clothing and long hair should be kept at a sufficient distance from moving mechanical elements.
Before using lifting and supporting devices, ensure that they have sufficient lifting capacity.
When working alone, have someone check in periodically to monitor the situation.
Actions should be performed in a certain sequence, making sure that the assembly is correct and the threaded connections are securely tightened.
Operating fluids and other chemicals should be stored in tightly closed containers, out of the reach of children and pets.
It should be remembered that a car is a vehicle of increased danger. Therefore, if you lack your own experience, you should seek advice from professionals to resolve any security-related issues.
Asbestos
Asbestos dust is a carcinogen and can cause cancer if inhaled or ingested. Asbestos is found in some gaskets and in brake and friction linings. Without knowing whether an item contains asbestos, it is safer to assume the presence of asbestos.
Fire
All fuels are flammable and their vapors are explosive.
Do not allow fuel to come into contact with hot engine surfaces.
Do not smoke or use open flames near the vehicle if any repair work is being carried out on it. Take precautions against flying sparks that may come from electrical appliances or plumbing tools.
Fuel vapor is heavier than air, so do not work on the fuel system while in the inspection hole. Another cause of fire is an overload or short circuit in the electrical wiring circuits. Use caution when repairing or replacing electrical equipment. Have a fire extinguisher suitable for extinguishing fuel and electrical fires on hand.
Poisoning by vapors or gas, exposure to toxic and irritating substances
Processed gases are poisonous; they usually contain carbon monoxide, which is fatal if inhaled. Do not allow the engine to run for long periods of time in an enclosed area, such as a garage with the door closed.
Fumes from fuels and various solvents used for cleaning and thinning paints are also toxic. Avoid skin contact with battery fluid and any fuel, fluid or lubricant, especially antifreeze, brake fluid and diesel fuel. Do not overfill them by sucking them out with a hose. If any liquid is accidentally swallowed or comes into contact with your eyes, seek immediate medical attention.
Prolonged contact with used motor oil can cause skin cancer. If necessary, use rubber gloves or protective hand cream. Do not wear oil-soaked clothing or keep oily rags in your pocket.
Air conditioner refrigerant may form a poisonous gas when exposed to an open flame (including cigarette). It can also cause frostbite on contact.
Battery
The battery contains sulfuric acid, which is corrosive to clothing, eyes and skin. Be careful when charging and transporting the battery.
Hydrogen, which can be released from the battery, is a highly explosive substance. Do not use open flames and avoid creating sparks near the battery. Be careful when connecting and disconnecting the charger and power cables.
Electric shock
When using a power tool connected to a fixed electrical network during work, as well as a portable light source, etc., make sure that the wiring connectors are secure and that the circuit is grounded (if required by safety requirements). Do not use power tools in wet conditions or near fuel containers.
Residual voltage in the ignition system
When touching some elements of the ignition system (high voltage wires) A severe electric shock may occur if the engine is running or started, especially if there is high humidity or damaged insulation. The residual voltage of a contactless ignition system has higher values than that of a conventional switch-distributor system. Electric shock in this case can be fatal.