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.
      - 3.1.4. Changes in a car design from 1987 to 1989.
         3.1.4.1. OHC engine
         + 3.1.4.2. Dm3 CVH 1,8 engine
         + 3.1.4.3. DOHC engine
         + 3.1.4.4. Service and repair
         + 3.1.4.5. Coupling
         3.1.4.6. Mechanical five-speed transmission of type N
         + 3.1.4.7. Mechanical five-speed transmission of MT 75 type
         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 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






3.1.4.1. OHC engine
GENERAL INFORMATION

Air pipe of new type of the ONS engine equipped with injection of fuel

 And – an elastic tube,

In – an opening of fastening,

With – a fastening collar

KRIVOSHIPNO-SHATUNNY MECHANISM

Pistons

Since February, 1987 (code 7В02) in ONS 1,6 engines of dm3 and since September, 1986 (code 6J15) in ONS 2,0 engines of dm3 shift of an axis of a piston finger concerning a piston axis from 0,8 mm to 0,6 mm is reduced. New pistons cannot be established with old rods and on the contrary.

Fuel system

Since May of the 1987th code (a code of date of manufacturing of "HL") some adjusting data of the two-chamber Weber carburetors intended for ONS 2,0 engines of dm3 are changed – the deviation of an air zaslonka at the beginning of work of a vacuum regulator in all Weber 85 HF carburetors makes 8 mm.

Since January, 1988 (a code of date of manufacturing of "JB") in engines with injection of gasoline the air pipe of new type is established.

Since May, 1988 cars with the ONS 1,8 engine of dm3 are equipped with the new Pierburg carburetor with designation of 85 HF of 9510 KS. Its distinctive sign is the yellow point on the valve of the enriching device.

Adjusting data of the carburetor of 85 HF of 9510 KS
Diameter of a diffuzor:
  – 1st chamber
23 mm
  – 2nd chamber
26 mm
Main fuel jet:
  – 1-й chambers
102,5
  – 2nd chamber
102,5
Fuel jet of idling
45
Air jet of idling
120
Number of turns of idling
875 ± 25 rpm.
The contents WITH
1,25 %
Deviation of an air zaslonka
4 mm
Course of a damper of a butterfly valve of a mix (dashpot)
1,6-2,4 mm

Since July, 1988 (a code of date of manufacturing of "JG") in ONS 1,6 engines of dm3 the new carburetor of type 84 HF 9510 DB with the electromagnetic valve blocking supply of fuel after switching off of ignition for prevention of spontaneous ignition is used.

Adjusting data of the carburetor of 84 HF of 9510 DB

Number of turns of idling: 875 ± 20 rpm.
The contents WITH: 1 %.

Other adjusting data same, as well as in the two-chamber Weber 84 HF 9510 CA carburetor.

Other information concerning a technical characteristics, adjustment and repair of ONS engines, is in subsection 4.1 and subsection 3.1.3.1.