Ford Sierra

1982-1993 of release

Repair and car operation

Ford Siyerra
+ 1.2. Car identification
+ 2. Maintenance
- 3. General data
   - 3.1. Cars with petrol engines
      3.1.1. Masses and transfer numbers
      3.1.2. Operational liquids
      - 3.1.3. Changes in a car design from 1984 to 1986.
         3.1.3.1. Engine
         3.1.3.2. Head of the block of cylinders
         3.1.3.3. Block of cylinders of the engine
         3.1.3.4. Krivoshipno-shatunny mechanism
         3.1.3.5. Cranked shaft
         3.1.3.6. Gazoraspredeleniye system
         3.1.3.7. Engine mount
         3.1.3.8. Cooling system
         + 3.1.3.9. Carburetor
         3.1.3.10. System of injection of fuel
         3.1.3.11. Ignition system
         3.1.3.12. Coupling
         3.1.3.13. Mechanical four-speed transmission
         3.1.3.14. Mechanical five-speed transmission
         + 3.1.3.15. Automatic transmission of Ford A 4 LD
         3.1.3.16. Power shaft and back bridge
         3.1.3.17. Steering system with the hydraulic booster
         3.1.3.18. Forward suspension bracket
         3.1.3.19. Back suspension bracket
         3.1.3.20. Brake system
         + 3.1.3.21. Electric equipment
         3.1.3.22. General data
      + 3.1.4. Changes in a car design from 1987 to 1989.
      + 3.1.5. Changes in a car design with 1990 till February, 1993.
   + 3.2. Cars with diesel engines
+ 4. Engines
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment

3.1.3.2. Head of the block of cylinders

GENERAL INFORMATION

Arrangement of consolidations and intensifying plates of a cover of a head of the block of cylinders with width of a surface of a prileganiye of laying of 5,5 mm

And, In – the strengthened plate,

With – consolidation

Arrangement of consolidations and intensifying plates of a cover of a head of the block of cylinders with width of a surface of a prileganiye of laying of 8 mm

And, In, D – the strengthened plate,

With – consolidation

Identification of bolts of fastening of a head of the block of cylinders

And – a bolt of Torx T55,

In – a bolt with an internal dodecagonal asterisk

Since September, 1983 (a code of date of manufacturing of "DJ") all engines are equipped with a head of the block of cylinders with raised (from 5,5 mm to 8 mm) width of a surface of a prileganiye of laying of a cover of a head of the block of cylinders.

Since April, 1984 bolts of fastening of a head of the block of cylinders of the Torx T55 type with a head with an internal hexagonal asterisk are used. The order of their tightening did not change.

In case of an oil effluence from under a cover of a head of the block of cylinders in the car made till September, 1983 with a surface under laying in width of 5,5 mm it is necessary to arrive as follows.

PERFORMANCE ORDER

1. To uncover heads of the block of cylinders and to level the damaged or deformed surface of a support of a cover of a head.
2. To establish a cover of a head of the block of cylinders together with laying of new type and six additional consolidations.
3. To replace angular plates (Grower type) with four strengthened plates.

If the surface of a prileganiye of laying in a cover of a head of the block of cylinders cannot be brought into a normal state, it is necessary to arrive as follows.

PERFORMANCE ORDER

1. To establish the following elements of new type: cover of a head of the block of cylinders and laying, and also casing of a gear belt.
2. To replace angular plates (Grower type) with four strengthened plates and to establish six additional consolidations.

If replacement of laying of a cover of a head of the block of cylinders in the car, the made ambassador of September, 1983 is necessary, it is necessary to arrive as follows.

PERFORMANCE ORDER

1. To establish the strengthened plates.
2. To tighten bolts of fastening of a cover of a head of the block of cylinders the moment of 5-8 Nanometers.

The moments of a tightening of bolts of fastening of a head of the block of cylinders with a Torx T55 type nest

1st stage	35-40 Nanometers
2nd stage	70-75 Nanometers
The 3rd stage (5 minutes later)	to tighten on 90

Prevention

Bolts of fastening of a head of the block of cylinders with a nest of the Torx T55 type are bolts of disposable application. For fastening of a head of the block of cylinders each time it is necessary to use surely new bolts with a Torx type nest. Bolts with a nest of the Torx type cannot be tightened on the warm engine.

VALVES

Sizes of valves of ONS 1,6 engines ^{of dm3} of LSD and 1,8 ^dm3 of REB

Engine	1,6 ^dm3 of LSD	1,8 ^dm3 of REB
Inlet valve:
– length (mm)	112,55	111,75-112,75
– diameter of a plate (mm)	41,80-42,20	41,80-42,20
Final valve:
– length (mm)	112,55	111,15-112,15
– diameter of a plate (mm)	34,00-34,40	34,00-34,40

Course of valves

Engine 1,6 ^{of dm3} of LSD	9,5 mm
Engine 1,8 ^{of dm3} of REB	10,1 mm