Ford Sierra

1982-1993 of release

Repair and operation of the car



Ford Siyerra
+ 1.2. Identification of the car
+ 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. Bent shaft
         3.1.3.6. System of gas distribution
         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. System of ignition
         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 Ford A 4 LD transmission
         3.1.3.16. Power shaft and back bridge
         3.1.3.17. System of steering 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 from 1990 to 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 a 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 a 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 – Torx T55 bolt,

In – a bolt with an internal dodecagonal asterisk

Since September, 1983 (a code of date of production "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 Torx T55 cylinders 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 manufactured till September, 1983 with a surface under laying 5,5 mm wide it is necessary to arrive as follows.

PERFORMANCE ORDER
1. To uncover a head of the block of cylinders and to level the damaged or deformed head cover support surface.
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 laying prileganiye surface in a cover of a head of the block of cylinders cannot be brought to the normal state, then 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 manufactured after September, 1983 is necessary, then 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 tightening of bolts of fastening of a head of the block of cylinders with a nest like Torx T55

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 like Torx T55 are bolts of one-time application. For fastening of a head of the block of cylinders every time it is necessary to use surely new bolts with a nest like Torx. Bolts with a nest like Torx 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

LSD dm3 engine 1,6
9,5 mm
REB dm3 engine 1,8
10,1 mm