Daewoo Nexia

since 1994 of release

Repair and car operation



Deu Neksiya
+ Maintenance instruction
+ Maintenance
- Engine
   2.1. Technical characteristics
   2.2. Greasing system
   2.3. Maintenance and engine repair
   2.4. Compression check
   2.5. Dismantle and engine installation assembled
   2.6. Engine support
   2.7. Inlet collector and laying
   2.8. Final collector and laying
   2.9. Cover of the case of a cam-shaft
   2.10. Pulley of a cranked shaft
   2.11. Forward cover of a gear belt
   2.12. Camshaft cogwheel
   2.13. Cogwheel of a cranked shaft
   2.14. Back cover of a gear belt
   2.15. Adjustment of a tension of a gear belt
   2.16. Verification of the angular provision of a camshaft
   2.17. Forward consolidation of a cranked shaft
   2.18. Camshaft. Levers. Hydrojacks of gaps
   2.19. Klapannye of a spring. Consolidations of cores of valves
   2.20. Head of cylinders. Camshaft case
   2.21. Repair of a head of the block of cylinders
   2.22. Dismantle of valves
   2.23. Directing plugs of valves
   2.24. Expansion of openings of plugs
   2.25. Valves
   2.26. Klapannye of a spring
   2.27. Saddles of valves
   2.28. Consolidations of valves
   2.29. Height of a core of the valve concerning a head of the block of cylinders
   + 2.30. Pushers of valves with hydrojacks of gaps
   2.31. Oil pallet
   2.32. A reception branch pipe with the oil filter
   2.33. Oil pump
   2.34. Repair of the oil pump
   2.35. Pistons and rods
   2.36. Flywheel. Back consolidation of a cranked shaft
   2.37. Cranked shaft
   2.38. Rods and radical bearings
   2.39. Replacement of loose leaves
   2.40. Piston group and rods
   2.41. Piston fingers and rings
   2.42. Block of cylinders
   2.43. Installation of pistons
   2.44. Disk balancing with a gear wreath
   2.45. Repair of carving openings
   + 2.46. Diagnostics of malfunctions of the engine
+ 3. Engine (two top camshafts)
+ cooling System
+ Toplevnaya and exhaust systems
+ Electric chain
+ 7. Ignition system
+ 8. Electronic control unit and sensors
+ Transmission
+ 10. Five-speed transmission and main RPO MM5 broadcast
+ 11. Automatic Transmission
+ Steering
+ Running gear
+ 14. Forward suspension bracket
+ 15. Drive of forward wheels
+ 16. Back suspension bracket
+ Brake system
+ Body
+ Heating, ventilation
+ Electric equipment


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2.25. Valves

GENERAL INFORMATION

Nature of wear of a tip of a core of the valve


 


Zones of wear of the valve

1. CORE TIP
2. THE FLUTE FOR INSTALLATION OF CRACKERS
3. THE LEAST WORN OUT SITE OF THE CORE
4. THE WORN MOST OUT SITES OF THE CORE
5. FACET
6. EDGE

   

To measure

PERFORMANCE ORDER
Not coaxiality of the valve and saddle. To raise the valve from a saddle and to put on a facet of a head of the valve a thin paint coat (the Berlin azure). To lower the valve on a saddle, to press and carefully to turn. In the wake of paint on a facet of a saddle it is possible to judge concentricity of the valve and a saddle. To wipe paint traces. To put on a saddle facet a thin paint coat (the Berlin azure) and to repeat check. In the wake of paint on a facet of the valve it is possible to judge coaxiality of the valve and a saddle. At an unsatisfactory prileganiye of a head of the valve to a saddle it is necessary to process facets of details grinding or to replace valves.

To check

PERFORMANCE ORDER
Wear of a tip of a core of the valve. Flutes for installation of crackers and consolidations on a vykrashivaniye and wear of walls. If flutes have defects, it is necessary to replace valves. A facet of a head of the valve on existence of sinks and cracks. If the facet is strongly damaged, to check a mirror of the corresponding cylinder and the piston. A valve core on existence задиров and scratches. Teases and superficial scratches it is possible to deduce thin nazhdachny whetstone. Pryamolinya nost of a core of the valve and head buckling. To use as V-shaped valve support measuring prisms. It is necessary to replace the deformed valves.
Facet of a head of the valve on existence of a concentric flute. If depth of a flute is great and when grinding a head of the valve the sharp edge will turn out, it is necessary to replace the valve. The facet of a head of the valve can be перешлифована for the nominal sizes if for the rest the valve is suitable for further use. At impossibility перешлифовать a facet the valve is subject to replacement. To measure thickness of an edge of a head of the valve after grinding. If the thickness of an edge of less admissible value to replace the valve.