FORD SCORPIO

1985-1994 of release

Repair and operation of the car



Ford Skorpio
+ 1.1. Identification of the car
+ 2. Maintenance
+ 3. Engines
- 4. Cooling system
   4.1. Technical characteristic
   + 4.2. Discharge of liquid and filling of the cooling system
   4.3. Removal and installation of a radiator
   4.4. Removal and installation of the thermostat
   + 4.5. Fan
   4.6. Cooling system pump
   4.7. Temperature sensor
   4.8. Driving belt of the DOHC engine
   4.9. Mechanism of a tension of a driving belt
+ 5. Fuel system
+ 6. Coupling
+ 7. Transmissions
+ 8. Driveshaft and back bridge
+ 9. Steering
+ 10. Suspension brackets
+ 11. Brake system
+ 12. Wheels and tires
+ 13. Body
+ 14. Electric equipment


9d8db598

4. Cooling system

4.1. Technical characteristic

GENERAL INFORMATION

The cooling system of tight type also includes a radiator, a broad tank, the pump of cooling liquid, the thermostat and the fan.

On cars with auxiliary alarm system, the broad tank contains the sensor of a longitudinal list of the car which includes a lamp of the alarm system if the level of cooling liquid considerably falls.

At start of the cold engine cooling liquid circulates around the block of cylinders, a head(s) of the block of cylinders and a final collector. Warm cooling liquid passes through a casing of the automatic air gate (in the presence) and through a heater before return to the engine.

As cooling liquid extends, the level of a broad tank increases. Intake of cooling liquid through a radiator is closed that provides the closed thermostat. When cooling liquid reaches the predetermined temperature, the thermostat opens and hot cooling liquid passes through the top hose to a radiator. As cooling liquid passes through a radiator down, there is its cooling with a stream of counter air. Circulation of cooling liquid continues through a broad tank, a final collector and a heater constantly.

The hydraulic coupling of the fan is operated air temperature behind a radiator. When air temperature reaches the predetermined level, the bimetallic spiral opens the valve and silicon liquid moves through system of blades of the coupling. The leading part of the coupling is located on one shaft with the water pump, the conducted part of the coupling is connected with fan shovels. Blades of the coupling are arranged so that the torque was transferred to fan shovels depending on viscosity of liquid which in turn depends on the surrounding temperature and frequency of rotation of the engine. Therefore the fan works only when it is required and in comparison with constantly working fan considerably saves fuel, reduces wear of a driving belt and noise of the fan.

Radiator and broad tank

The radiator with a cross stream has tanks from artificial material. The broad tank is made of transparent material and has designations of the maximum and minimum levels of cooling liquid. In the cars equipped with the automatic transmission in the right tank of a radiator the radiator of oil of the automatic transmission is located (type oil-cooling liquid).

Broad tank with the valve of excessive pressure which effectively pressurizes the cooling system both at temperature increase of cooling liquid, and at decrease. The broad tank also has decontamination function. Any accumulation of air bubbles in cooling liquid, in the case of the thermostat and a radiator comes back to a broad tank and is issued in the atmosphere, thus overall performance of cooling liquid is maintained.

On cars with auxiliary alarm system the broad tank contains the sensor of a longitudinal list of the car which includes a lamp of the alarm system if the level of cooling liquid considerably falls.

Pressure of opening of the valve of excessive pressure in a stopper of a broad tank:
  – OHC and DOHC engine
85 – 110 kPa
  – V6 engine
100 – 140 kPa

Pump of cooling liquid

The centrifugal pump of cooling liquid located on a forward wall of the block of cylinders is put in action by a maple belt together with the generator.

Maple belt

Brand and type
Motorcraft 83 HF 6 C 301 AA
The tension (measured by special Ford adaptation):
  – new belt
400 – 500 N
  – the belt which was in the use
300 – 400 N
Deflection
10 mm in the middle of longer site under pressure of a thumb

Fan

The fan of the OHC engine is manufactured of artificial material, has seven blades, is located on a shaft of the pump of cooling liquid and is put in action by a maple belt together with the pump and the generator.

The DOHC engine fan with the electric drive from the thermal sensor located in a drain stopper of a radiator.

Thermostat


The thermostat is located behind a water output branch pipe on the forward party of a head of the block of cylinders on the OHC models and on a forward part of the water pump on the V6 models.

Temperature began opening:
  – OHC and DOHC engine
85 – 89 °C
  – V6 engine
79 – 83 °C
Nominal temperature of opening
88 °C
Temperature of full opening
102 ± 3 °C

Cooling liquid

Quantity:
  – OHC engine
8,0 dm3
  – the DOHC engine with the carburetor
7,9 dm3
  – the DOHC engine with system of injection
7,3 dm3
  – V6 engine
8,5 dm3
Type
mix of special nonfreezing Ford SSM 97 B 9103 A liquid and the distilled water (on 50%) form protection to -30 °C
Density of cooling liquid
1,069 – 1,077 g/cm3
Frequency of replacement
each 60 000 km of a run of the car or time in two years