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
      + 4.1.1. Technical characteristics
      4.1.2. Adjustment of gaps of valves
      + 4.1.3. Ignition system
      + 4.1.4. Fuel system
      + 4.1.5. The repair which is not demanding removal of the engine
      4.1.6. Removal and engine installation
      4.1.7. Engine dismantling
      4.1.8. Identification of cooperating parts
      4.1.9. Engine assembly
      4.1.10. Replacement of pistons
      4.1.11. Removal and installation of an intermediate shaft
      4.1.12. Gazoraspredeleniye system
      4.1.13. Greasing system
      + 4.1.14. Cooling system
      4.1.15. Suspension bracket of the power unit
      4.1.16. System of production of the fulfilled gases
   + 4.2. Diesel engine
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment

4.1.10. Replacement of pistons



Always it is necessary to replace a set of four pistons together with fingers. In case of need grindings of one cylinder it is necessary to grind everything and to replace all pistons together with fingers. Identical diameter also means that they have identical weight that, in turn, is a condition of the correct balancing of the engine.

1. To squeeze out on the press fingers of pistons.
2. To lay rods on a plate and to check, whether they are deformed.
3. To establish the adaptation 21.014 in a vice and to extend against the stop his directing finger.
4. To establish in the same direction the piston the sign "Front", and also a rod an oil spray.
5. To arrange the piston in the adaptation so that the arrow at the bottom of the piston was directed forward.
6. To insert against the stop directing finger into a piston opening.
7. To press a piston finger into an opening in foot on the opposite side of the piston so that its head was made even to internal edge of foot.
8. To establish in the adaptation the remote plug corresponding to this type of the engine.
9. To put on a rod head signs with the thermochrome handle (Faber-Castell 2815) and to heat up it while color of a sign will not change on the color corresponding to external color of the handle. It means that the head of a rod heated up to the temperature necessary for a press fitting of a finger in the plug of a head (260 °–300 ° C).
10. Quickly to transfer a rod and to place it in the piston on an adjusting shaft. To insert a piston finger against the stop.
11. To wait, while the rod will not cool down and to check correctness of connection of the piston with a rod