Citroen Xantia

since 1993 of release

Repair and car operation



Citroen Xantia
+ Introduction
+ Operation manual
+ Routine maintenance
+ engine Repair
- Systems of cooling, heating
   Detachment and replacement of hoses of system of cooling
   Removal, check of a condition and radiator installation
   Removal, check of serviceability of functioning and thermostat installation
   Check of serviceability of functioning, removal and fan installation (ов) cooling systems
   Check of serviceability of functioning, removal and installation of electric switches and sensors of system of cooling
   Removal and installation of the water pump
   Removal and installation of a casing of the thermostat / fuel filter (diesel models)
   System of heating/ventilation of salon - the general information
   Removal and installation of components of system of heating/ventilation of salon
   Air central air - the general information and precautionary measures
   Removal and installation of components of central air of air
+ Power supply system and release
+ engine Electric equipment
+ Coupling
+ Transmission
+ Power shafts
+ Uniform hydraulic system
+ Brake system
+ Running gear and steering
+ Body and salon furnish
+ Onboard electric equipment
+ electric equipment Schemes



Systems of cooling, heating

Specifications

General parameters

The maximum admissible pressure in system, a bar

1.4

Thermostat

Opening temperature

°C

Opening beginning

   •  Models with RKPP

89

   •  Models with AT

83

Complete opening

99

Temperature of operation of a thermoswitch

118°С

Pressure of opening of the valve of a cover of a radiator, bar

1.4

Efforts of a tightening of carving connections, Nanometer

Bolts of fastening of the water pump

15

Sensors switches

18

General information and precautionary measures

General information

On all models of cars of considered brand the system of cooling of the closed type, working under pressure is used. Into structure of system enter the water pump which drive is carried out from a gas-distributing belt, a radiator of a cross line design (on some models with the built-in broad tank), the electric fan (ы), the thermostat, and also a set of connecting hoses and sensors switches.
Cold cooling liquid from a radiator on the bottom hose arrives in the water pump, which provides giving it in galleries of the block and a head of cylinders (and also in the heat exchanger of a heater of salon), and, - at the corresponding complete set, - in a maslookhladitel (and). After heat selection from surfaces of cylinders, chambers of combustion and saddles of the valves, cooling liquid reaches the lower part of the thermostat which in an initial condition is closed. Further, cooling liquid passes through the heater heat exchanger then, via the block of cylinders, comes back back to the water pump.

While the engine did not get warm to some certain temperature, cooling liquid continues to circulate on a short contour, passing through a block/head of cylinders and the heater heat exchanger. As soon as the temperature of the engine reaches some established value, there is a thermostat opening therefore the radiator is connected to a contour of circulation of liquid. In a radiator there is a convective return of heat from liquid to a running stream of the air which efficiency is defined by the developed area of edges of the heat exchanger of a radiator and speed of a running stream. It is in case of need provided additional having blown in a radiator at the expense of turning on of the electric fan (ов) in cooling systems. Leaving a radiator, the cooled liquid repeats the running cycle.

When the temperature of the engine reaches normal working value, excess of cooling liquid, образовывающийся at the expense of its thermal expansion, is forced out in a broad tank, from where, in process of cooling, comes back back to the working highway of system.

On models from AT the part of the cooling liquid leaving the bottom hose of a radiator, is passed through the cooler of ATF established on transmission. On the models equipped with a maslookhladitel, liquid is passed as well via the heat exchanger of the last.

The electric fan (ы) which functioning the thermosensitive sensor switch of system of cooling operates, is established ahead of a radiator. As soon as the temperature of cooling liquid reaches some established value, there is a turning on of the fan therefore having blown in the heat exchanger of a radiator increases that conducts to increase of efficiency of heatreturn.

Function charts of several types of contours of system of cooling of considered models of engines established on cars are given in illustrations.


Contour of system of cooling of petrol engines XU7, XU5, XU10 J2 and XU10 J4 of models with RKPP (with the broad tank built in a radiator)

1 — Gates for air removal
2 — the temperature Sensor (cooling system)
3 — the Thermosensitive sensor switch (it is connected to the thermometer on the dashboard and opens a safety contour at an engine overheat [118°С])
4 — the temperature Sensor (injection system)
5 — a liquid Stream to the heat exchanger of a heater and back

6 — the Stream of cooling liquid from the heater heat exchanger
7 — the Broad tank
8 — the Radiator with the fan
9 — the Thermostat
10 — the heater Heat exchanger


Contour of system of cooling of petrol XU10 J2 engines of models with AT (with a separate broad tank)
It is used also on XU7 engines and XU10 J2 of models from RKPP equipped with system of climate control.

1 — Gates for air removal
2 — the temperature Sensor (cooling system)
3 — the Thermosensitive sensor switch (it is connected to the thermometer on the dashboard and opens a safety contour at an engine overheat [118°С])
4 — the temperature Sensor (injection system)
5 — a liquid Stream to the heat exchanger of a heater and back
6 — the Stream of cooling liquid from the heater heat exchanger

7 — the Broad tank
8 — the Radiator with the fan
9 — the Thermostat
10 — the Stream from the heat exchanger of a maslookhladitel
11 — the Stream to the heat exchanger of a maslookhladitel
12 — the Heat exchanger of a maslookhladitel
13 — the heater Heat exchanger


Contour of system of cooling of petrol XU10 J4 engines (16 valves) models with RKPP (with the broad tank built in a radiator)

1 — Gates for air removal
2 — the temperature Sensor (cooling system)
3 — the Thermosensitive sensor switch (it is connected to the thermometer on the dashboard and opens a safety contour at an engine overheat [118°С])
4 — the temperature Sensor (injection system)
5 — the heater Heat exchanger

6 — a liquid Stream to the heat exchanger of a heater and back
7 — the Stream of cooling liquid from the heater heat exchanger
8 — the Thermostat
9 — the Broad tank
10 — the Radiator with the fan
11 — the Heat exchanger of a maslookhladitel


Contour of system of cooling of diesel engines with the broad tank built in a radiator

1 — Gates for air removal
2 — the Drain gate
3 — the temperature Sensor (cooling system)
4 — the temperature Sensor (the adjusting BITRON device)

5 — the Sensor of temperature (power supply system)
6 — the Thermosensitive sensor switch of the fan of system of cooling
7 — the Thermostat
8 — the Broad tank


Contour of system of cooling of diesel engines with a separate broad tank

1 — Gates for air removal
2 — the Drain gate
3 — the temperature Sensor (cooling system)
4 — the temperature Sensor (the adjusting BITRON device)

5 — the Sensor of temperature (power supply system)
6 — the Thermosensitive sensor switch of the fan of system of cooling
7 — the Thermostat
8 — the Broad tank

Precautionary measures

In order to avoid an oshparivaniye, do not uncover at all a broad tank and do not disconnect any components of an okhladitelny path at the hot engine. If there is a need for removal of a cover of a broad tank before complete cooling of cooling liquid, (though such situations should be avoided whenever possible), it is necessary to dump previously superfluous pressure in system. Wrap up a tank cover a thick layer of rags, then slowly turn on before hissing. When hissing indicating release of steam will stop, slowly unscrew a cover up to the end. If at the last stage of an otvorachivaniye hissing does not renew, the cover can be removed. In the course of performance of all procedure do not incline the person over a tank mouth, for protection of hands put on rubber gloves.


Try to avoid antifreeze hit on open sites of skin and a paint and varnish covering of body panels. Casual splashes should be washed away immediately plentiful quantity at its finest. At all do not leave merged of the engine or fresh cooling liquid being stored in open container. The spilled liquid at once collect rags. Remember that the sweetish smell of antifreeze is capable to draw attention of children and animals. Hit even insignificant amount of cooling liquid to the digestive highway of a live organism is fraught with the most serious consequences, up to a lethal outcome.


Remember that at the hot engine the fan of system of cooling continues to function even after ignition switching off! Protect hands, try not to allow hits of edges of clothes in contact to blades of a krylchatka.


Precautionary measures for the models equipped with central air of air, are listed in the section air Central air - the general information and precautionary measures.