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.
      - 3.1.4. Changes in a car design from 1987 to 1989.
         3.1.4.1. OHC engine
         - 3.1.4.2. Dm3 CVH 1,8 engine
            - 3.1.4.2.1. Technical characteristics
               3.1.4.2.1.1. Head of the block of cylinders of the engine
               3.1.4.2.1.2. Block of cylinders of the engine
               3.1.4.2.1.3. Krivoshipno-shatunny mechanism
               3.1.4.2.1.4. System of gas distribution
               3.1.4.2.1.5. Lubrication system
               3.1.4.2.1.6. Cooling system
               3.1.4.2.1.7. Fuel system
               3.1.4.2.1.8. System of ignition
               3.1.4.2.1.9. Tightening moments
            3.1.4.2.2. Adjustment of the engine
            3.1.4.2.3. System of ignition
            3.1.4.2.4. System of gas distribution
            3.1.4.2.5. Assembly of the CVH 1,8 engine of dm3
         + 3.1.4.3. DOHC engine
         + 3.1.4.4. Service and repair
         + 3.1.4.5. Coupling
         3.1.4.6. Mechanical five-speed transmission of N type
         + 3.1.4.7. Mechanical MT 75 five-speed transmission
         3.1.4.8. Automatic transmission
         3.1.4.9. Forward suspension bracket
         + 3.1.4.10. Brake system
         + 3.1.4.11. Electric equipment
         3.1.4.12. General data
      + 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





3.1.4.2.1.3. Krivoshipno-shatunny mechanism

GENERAL INFORMATION

Bent shaft

The bent shaft made of cast iron is dynamically balanced and leans on five radical bearings.

Diameters of radical necks:
  – nominal
53,980 – 54,000 mm
  – repair-0,25
53,730 – 53,750 mm
  – repair-0,50
53,480 – 53,500 mm
  – repair-0,75
53,230 – 53,250 mm
Width of the basic bearing:
  – nominal:
28,825 – 28,875 mm
  – repair
28,675 – 28,725 mm
Radial gap in radical bearings
0,028 – 0,067 mm
Axial gap of a bent shaft
0,1 – 0,2 mm
Diameter of conrod necks:
  – nominal
43,890 – 43,910 mm
  – repair-0,25
43,640 – 43,660 mm
  – repair-0,50
43,390 – 43,410 mm
  – repair-0,75
43,140 – 43,160 mm
  – repair-1,00
42,89 – 42,910 mm

Radical inserts

Thin-walled inserts are used.

Internal diameter of inserts after installation in the block of cylinders:
  – nominal
58,016 – 58,059 mm
  – repair-0,25
57,776 – 57,809 mm
  – repair-0,50
57,516 – 57,559 mm
  – repair-0,75
57,266 – 57,309 mm

Rods

Rods are shaped from steel and have double-T section.

Diameter of an opening of the lower head
46,890 – 46,900 mm
Diameter of an opening of a head
20,622 – 20,634 mm
Radial gap in conrod bearings
0,020 – 0,065 mm

Connecting rods

Thin-walled inserts are used.

Internal diameter of inserts after installation in the block of cylinders:
  – nominal
43,919 – 43,960 mm
  – repair-0,25
43,669 – 43,710 mm
  – repair-0,50
43,419 – 43,460 mm
  – repair-0,75
43,169 – 43,210 mm
  – repair-1,00
42,919 – 42,960 mm

Pistons

Pistons are cast under pressure from light alloy, have a flat bottom with deepenings for plates of valves.

Piston gap in the cylinder:
  – nominal
0,02 – 0,04 mm
  – repair
0,01 – 0,045 mm
Nominal diameters of pistons:
Standard:
  – group 1
79,910 – 79,920 mm
  – group 2
79,920 – 79,930 mm
  – group 3
79,930 – 79,940 mm
  – group 4
79,940 – 79,950 mm
  – group 5
79,950 – 79,960 mm
  – group 6
79,960 – 79,970 mm
Increased:
  – group A
79,970 – 79,980 mm
  – group B
79,980 – 79,990 mm
  – group C
79,990 – 80,000 mm

Repair diameters of cylinders: are increased by 0,290 or 0,500 mm.

Piston rings

Each piston has rings: two sealing and one oil scraper.

Sealing rings have to be directed by an inscription of "Torahs" towards a head of the block of cylinders.

Gap of the lock of the rings (placed in the cylinder):

  – sealing: 0,30 – 0,50 mm;
  – oil scraper: 0,40 – 1,40 mm.

Position of locks of rings on the piston: cuts of sealing rings have to be placed evenly on piston perimeter, and components of an oil scraper ring have to have the cuts located through everyone 120 °.

Flywheel

The flywheel is fixed on a flange of a bent shaft by means of 6 bolts.

The gear wreath napressovyvatsya at a temperature of 260 ° –280 °C.