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
- 4. Engines
   - 4.1. Petrol engines
      - 4.1.1. Technical characteristics
         4.1.1.1. Head of the block of cylinders
         4.1.1.2. Block of cylinders of the engine
         4.1.1.3. Krivoshipno-shatunny mechanism
         4.1.1.4. System of gas distribution
         4.1.1.5. Lubrication system
         4.1.1.6. Cooling system
         4.1.1.7. Fuel system
         4.1.1.8. System of ignition
         4.1.1.9. Tightening moments
      4.1.2. Adjustment of gaps of valves
      + 4.1.3. System of ignition
      + 4.1.4. Fuel system
      + 4.1.5. The repair which is not demanding removal of the engine
      4.1.6. Removal and installation of the engine
      4.1.7. Dismantling of the engine
      4.1.8. Identification of the interacting parts
      4.1.9. Assembly of the engine
      4.1.10. Replacement of pistons
      4.1.11. Removal and installation of an intermediate shaft
      4.1.12. System of gas distribution
      4.1.13. Lubrication 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





4.1.1.4. System of gas distribution

GENERAL INFORMATION

Four-cylinder line (general view) of the ONS engine

The cam-shaft is located in a head of the block of cylinders, sets in motion of the valve by means of the lever of valves and is put in action by a gear belt.

Working gap of valves (in a cold state):

  – inlet: 0,20 mm;
  – final: 0,25 mm.

Distribution phases

Engine
1,3 dm3 and 1,6 dm3
2,0 dm3
OZD
22 ° before VMT
24 ° before VMT
ZZD
54 ° after NMT
64 ° after NMT
OZW
64 ° before NMT
70 ° before NMT
ZZW
12 ° after VMT
18 ° after VMT

OZD and ZZD – respectively opening and closing of the inlet valve;
OZW and ZZW – respectively opening and closing of the final valve;
VMT and NMT – respectively the top and lower dead points.

Gear belt

Brand: Ford Powergrip
Type:
  – dm3 engine 1,3
70HM 6288 AA
  – dm3 engine 1,6
70HM 6288 AA
  – dm3 engine 2,0
70HM 6268 AA
Number of teeths
  – dm3 engine 1,3
119
  – dvigatel1,6 dm3
119
  – dm3 engine 2,0
122

Cam-shaft

The cam-shaft rotates in three bearings.

Diameters of bearings of a cam-shaft:
  – forward
41,987 – 42,013 mm
  – average
44,607 – 44,633 mm
  – back
44,987 – 45,013 mm
Internal diameters of plugs of bearings:
  – forward
42,035 – 42,055 mm
  – average
44,655 – 44,675 mm
  – back
45,035 – 45,055 mm
Axial side play of a cam-shaft
0,104 – 0,204 mm
Thickness of persistent laying of a cam-shaft
3,96 – 4,01 mm
Raising of cams:
  – dm3 engine 1,3
5,9639 mm
  – dm3 engine 1,6
5,9639 mm
  – dm3 engine 2,0
6,3323 mm
Height of cams:
  – dm3 engine 1,3
35,894 – 36,234 mm
  – dvigatel1,6 dm3
35,894 – 36,234 mm
  – dm3 engine 2,0
36,260 – 36,600 mm