Daewoo Nexia

Since 1994 of release

Repair and car operation

Daewoo Nexia
+ The maintenance instruction
+ Maintenance service
- The engine
   2.1. Technical characteristics
   2.2. Greasing system
   2.3. Maintenance service and engine repair
   2.4. Compression check
   2.5. Dismantle and engine installation in gathering
   2.6. Engine support
   2.7. An inlet collector and a lining
   2.8. A final collector and a lining
   2.9. A cover of the case of a cam-shaft
   2.10. A pulley of a cranked shaft
   2.11. A forward cover of a gear belt
   2.12. A camshaft cogwheel
   2.13. A cogwheel of a cranked shaft
   2.14. A back cover of a gear belt
   2.15. Adjustment of a tension of a gear belt
   2.16. Check of angular position of a camshaft
   2.17. Forward consolidation of a cranked shaft
   2.18. A camshaft. Levers. Hydrojacks of backlashes
   2.19. Klapannye springs. Consolidations of cores of valves
   2.20. A head of cylinders. The 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 apertures of plugs
   2.25. Valves
   2.26. Klapannye springs
   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 backlashes
   2.31. The oil pallet
   2.32. A reception branch pipe with the oil filter
   2.33. The oil pump
   2.34. Repair of the oil pump
   2.35. Pistons and rods
   2.36. A flywheel. Back consolidation of a cranked shaft
   2.37. A 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. The block of cylinders
   2.43. Installation of pistons
   2.44. Balancing of a disk with a gear wreath
   2.45. Repair of carving apertures
   + 2.46. Diagnostics of malfunctions of the engine
+ 3. The engine (two top camshafts)
+ Cooling system
+ Fuel and exhaust systems
+ Electric chain
+ 7. Ignition system
+ 8. The electronic block of management and gauges
+ Transmission
+ 10. A five-speed transmission and the main transfer RPO MM5
+ 11. Automatic Transmission
+ Steering
+ Running gear
+ 14. A forward suspension bracket
+ 15. A drive of forward wheels
+ 16. A back suspension bracket
+ Brake system
+ Body
+ Heating, ventilation
+ Electric equipment

2.27. Saddles of valves

Installation of a directing core of the grinding machine


Grinding head for processing of saddles of valves


The sizes of facets of saddles of valves


Grinding in of valves

1. To insert directing core into the plug.
2. To establish a grinding head the party with конусностью 45 on a valve saddle, fig. the Grinding head for processing of saddles of valves see.
3. To attach the handle with распорной the plug. Grinding to continue until the grinding head will not start to remove saddle metal in regular intervals on all circle. It is necessary to aspire to remove as less as possible metal from a saddle facet.
4. To turn a grinding head and to establish its party with конусностью 30 "on a saddle. To spend similarly polishing of a facet of a saddle. The same grinding head is applied to processing of saddles of inlet and final valves.
5. To cover facets of a saddle with thin grinding paste, to insert into the plug the valve and cautiously to turn it with small pressing. To raise the valve and to check up прилегание its heads to a saddle. If there is no uniform contact of the valve to a saddle, to repeat operation of polishing of a saddle.
6. Grinding in of valves.

After polishing which should provide tightness of landing of the valve in a saddle, as a rule, make definitive grinding in of valves to saddles. For operational development of saddles use only thin grinding paste. For uniform distribution of paste on a circle of a saddle the valve in the course of grinding in periodically raise from a saddle. After grinding in it is necessary to clear facets of the valve and a saddle of the rests of grinding paste. Before installation of valves it is necessary to grease their cores.