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
   - 3.2. Cars with diesel engines
      - 3.2.1. Changes in a car design from 1988 to 1993.
         3.2.1.1. Dm3 engine 2,3
         - 3.2.1.2. Dm3 engine 1,8
            3.2.1.2.1. Technical characteristics
            3.2.1.2.2. Head of the block of cylinders
            3.2.1.2.3. Block of cylinders
            3.2.1.2.4. Krivoshipno-shatunny mechanism
            3.2.1.2.5. Gazoraspredeleniye system
            3.2.1.2.6. Greasing system
            3.2.1.2.7. Cooling system
            3.2.1.2.8. Fuel system
            3.2.1.2.9. Tightening moments
            3.2.1.2.10. Engine adjustment
         + 3.2.1.3. Fuel system
         + 3.2.1.4. The repair which is not demanding removal of the engine
         3.2.1.5. Removal and engine installation
         3.2.1.6. Engine dismantling
         3.2.1.7. Check of details
         3.2.1.8. Check of gaps of a cranked shaft and rods
         3.2.1.9. Engine assembly
         3.2.1.10. Greasing system
         3.2.1.11. Cooling system
         3.2.1.12. Coupling
         3.2.1.13. Mechanical five-speed transmission of MT 75 type
         3.2.1.14. Power shaft and back bridge
         3.2.1.15. Steering system
         3.2.1.16. Forward suspension bracket
         3.2.1.17. Brake system
         3.2.1.18. Electric equipment
         3.2.1.19. General data
+ 4. Engines
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment





3.2.1.2.10. Engine adjustment

Check of a gap of valves

The gap of valves is checked shchupy between a back part of a cam and a pusher.

PERFORMANCE ORDER
1. To disconnect from a cover of a head of the block of cylinders the elastic pipeline of ventilation of a case of the engine.
2. To uncover the block of cylinders.
3. To turn a cranked shaft of the engine for a nut of fastening of a pulley (it is impossible to rotate for a cam-shaft pulley) in the direction of its working rotation before situation in which both cams of the 1st cylinder will be turned by a working part of a cam up.
4. To check a gap of valves of the 1st cylinder, inserting a plate щупа between a back part of a cam and a pusher.
5. To define type of the checked valve (inlet or final) and to compare value of the measured gap to demanded value (see subsection 3.2.1.2.2). In case of need to adjust a gap of the checked valve.

Prevention

Sequence of installation of valves, considering from a forward part of the engine (from a drive of system of a gazoraspredeleniye) in each cylinder it is identical: the first (about a drive of system of a gazoraspredeleniye) is the inlet valve, and the second – final.


6. To repeat the described actions for valves of other cylinders in sequence of injection (1–3–4–2, considering from outside drives of system of a gazoraspredeleniye).

Adjustment of a gap of valves

Adjustment of a gap of valves consists in replacement of the adjusting plate located in deepening of a pusher. Replacement of adjusting plates does not demand cam-shaft extraction if the special adaptation for performance of this operation is used.


Prevention

In the course of replacement of plates of adjustment of a gap of valves pistons of the engine should not be precisely in VMT, and on some millimeters is lower (about 1/4 turns of a cranked shaft). It will prevent valve impact about a bottom of the piston pressed at replacement of an adjusting plate.


PERFORMANCE ORDER
1. To turn pushers so that in bottoms of pushers after compression it was possible to insert into cuts easily special nippers for extraction of adjusting plates.
2. To establish a cranked shaft of the engine in the relevant situation (see the description above) and by means of the press device (adaptation 21.106) to press down a pusher (opening at the same time the valve and compressing its spring) so that by means of special nippers (21.107) it was possible to take an adjusting plate.
3. To measure thickness of the taken plate and, taking in attention the measured gap and the demanded nominal size, to pick up from a set a plate in the thickness providing the demanded gap of the valve.
4. To insert the picked-up plate so that the surface with its designation was directed down (to a pusher).
5. To take the press device.
6. To repeat the described operations for other valves.
7. To establish a cover of a head of the block of cylinders with new laying.
8. To attach to a cover of a head of the block of cylinders the elastic pipeline of system of ventilation of a case of the engine.