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
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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. |
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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.
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| 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). |
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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. |
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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. |
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