Service Nissan Sunny with 1991 on 1997 of release in a body n-14.
1. The maintenance instruction
2. Maintenance service
3. Engines
4. Cooling system
4.1. Specifications
4.2. Hoses of system of cooling
4.3. A radiator
4.4. The thermostat
4.5. The electrofan
4.6. Gauges and switches of system of cooling
4.7. The pump of a cooling liquid
5. Heating and ventilation system
6. Fuel and an exhaust system
7. System of start-up of the engine
8. Coupling
9. Transmissions
10. Semiaxes
11. Brakes
12. Suspension brackets and a steering
13. A body
14. An electric equipment



4. Cooling system

The system of cooling of the closed type, includes a radiator, the thermostat, the centrifugal pump of a cooling liquid, the electric fan of cooling, hoses and switches. The pump drive is carried out with the help клинового a belt from a pulley коленвала.

The system functions as follows. The cooling liquid moves the water pump on the block of cylinders and a head of the block of cylinders, arriving through an inlet collector, a radiator of an oven and the carburettor in the thermostat case.

When the motor not разогрет, a cooling liquid arrives back from the thermostat case in the water pump. When the cooling liquid reaches certain temperature, the thermostat opens, and the cooling liquid arrives through the top hose in a radiator. At that time, while охладительная the liquid circulates through a radiator, it is cooled by air stream at car movement. In case of need, liquid cooling is helped also by the electric fan. After achievement of the bottom part of a radiator the liquid is cooled also a cycle repeats again.

At normal working temperature of the engine the cooling liquid extends, and its part gets through the thin hose connected to a mouth of a jellied stopper of a radiator, to a broad tank. After the system will be cooled, gathered охладительная the liquid in a tank comes back in a radiator.

On some models охладительная the liquid passes also through an oil radiator.

The electric fan (fans) of cooling located ahead of a radiator is supervised by the thermostat switch. At certain temperature охладительной liquids the switch includes the fan.

The prevention

Do not try to uncover a jellied mouth of a radiator or to rearrange any part of system of cooling when the motor разогрет as there is a big risk to burn. In a case if the cover of a jellied mouth of a radiator should be removed before the motor and a radiator have completely cooled down (though it and it is not recommended), first of all it is necessary, that pressure in cooling system has fallen. For burn avoidance cover a cover with a thick piece of a rag and slowly unscrew it until hissing will be distributed. When hissing will stop, specifying that pressure has fallen, continue to unscrew slowly a cover until then when it can be removed. If hissing repeats, wait until it completely will not disappear. All time at stopper opening try to hold yours the person and hands on safe distance.

Do not suppose a situation that antifreeze got on your skin or on the painted surface of the car. Immediately wash out spread liquid water. Never suppose, that antifreeze was near you in the open container or formed a pool on road or on a floor in garage. Children and pets are involved with a pleasant smell of antifreeze, and in case of its hit in an interior, it can lead to a lethal outcome.

In case the motor разогрет, the electric fan can start to rotate, even if the motor does not work. Watch the hands, hair, spacious clothes when work with the motor.

Look subsection 5.2 for acceptance of safety measures at work with the models equipped with the conditioner. Be healthy a diesel engine

4.1. Specifications