Ford Sierra

1982-1993 of release

Repair and car operation

Ford Siyerra
+ 1.2. Car identification
+ 2. Maintenance
+ 3. General data
- 4. Engines
   + 4.1. Petrol engines
   - 4.2. Diesel engine
      + 4.2.1. Technical characteristics
      4.2.2. Check and adjustment of gaps of valves
      + 4.2.3. Fuel system
      + 4.2.4. Nozzles
      4.2.5. Glow plugs
      4.2.6. Compression check
      4.2.7. Air removal from fuel system
      4.2.8. Fuel filter
      4.2.9. Fuel pump, installation of the beginning of injection of fuel
      4.2.10. Adjustment of number of turns of idling
      - 4.2.11. The repair which is not demanding removal of the engine
         + Head of the block of cylinders Removal and engine installation
         + Dismantling, repair and engine assembly
         + Greasing system
         - Cooling system
   Liquid plums from cooling system
   Filling of system and air removal
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment Fan


Coupling of the fan of cooling

1–contact brush,
2–contact ring,
3–driving belt,
5–blades of the fan,
6–bolt and nut of fastening of blades of the fan,
7–central nut,
10-adjusting bolt,
11-air gap,
14-cover of a drive of the mechanism of a gazoraspredeleniye

The drive of the fan of cooling consists of two important parts – electromagnetic and frictional couplings. The electromagnetic coupling is put in action by a maple belt and rotates on an axis which leans on two ball bearings, established in inflow of a cover of a drive of the mechanism of a gazoraspredeleniye. On the forward end of this axis the ball bearing on which the frictional coupling with fan blades freely rotates is established. Between electromagnetic and frictional couplings there is an air gap if the temperature of the engine does not exceed 71 ° S.Kogda temperature of cooling liquid rises above 85 ° With, the sensor established on a radiator, submits tension on a coal contact brush and, through a contact ring, on the electromagnetic coil under the influence of a magnetic field, the frictional coupling is drawn to electromagnetic, and blades of the fan start to rotate with speed of rotation of a pulley. At reduction of temperature of cooling liquid, the electromagnet is disconnected, the gap is restored and blades of the fan are slowed down, rotating only under the influence of an air and inertia stream.

For normal operation of the coupling the tension of a belt of a drive should be in norm, the electric sensor is serviceable, the coal brush is not worn-out, and a contact ring the pure. A gap between the fan and the coupling plug – 0,5 mm on the cold engine. Before check of a gap it is necessary to remove fan blades, having unscrewed fastening nuts. Measurements are made shchupy in several points on a circle. For carrying out adjustment it is necessary to weaken lock-nuts of adjusting bolts and, rotating them, to establish a demanded gap.

Removal and installation of the coupling of the fan

1. To merge cooling liquid from system.
2. To disconnect branch pipes from a radiator and to remove a radiator.
3. To remove a driving belt of the fan.
4. To fix a pulley and to unscrew the central nut of an axis of the fan.
5. Back support of the engine.
6. In easy blows of a kiyanka on a pulley and the coupling to remove the electromagnetic coupling.
7. To uncover a drive of the mechanism of a gazoraspredeleniye, to remove a lock spring ring and to take a fan axis with bearings.
8. The coupling in sequence of return is established to removal.