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


2.43. Installation of pistons


Place of measurement of diameter of the cylinder


Piston measurement

PISTON KONUSNOST. To measure diameter of the piston at level of an axis of an opening under a finger and diameter of a skirt.

DIAMETER of the PISTON. To measure diameter of the piston in section which is below an opening axis under a finger on 19 mm.


At installation of pistons it is necessary to check piston landing in the cylinder. Factory pistons and the pistons delivered as spare parts, have identical weight and can be established in the Engine without preliminary sorting and selection for weight Steadiness of the engine is not broken. If necessary it is possible to establish in separate cylinders and the pistons which were in the use if they are in a good condition.

In order to avoid violation of steadiness of the engine it is forbidden to grind pistons for smaller diameter.

Identification number of diameter of cylinders is put down about identification number of the engine.

To measure

1. Piston. At wear or existence of other defects to replace with the piston of normal or increased diameter.
2. Cylinder opening, fig. Place of measurement of diameter of the cylinder. If necessary to restore working capacity boring and a honingovaniye for the repair size.

Finally to finish diameter of the cylinder the honingovaniy ambassador of selection of the piston.

3. To establish the piston in the cylinder.

The piston and mirror of the cylinder should be dry.

4. Carefully to wash out a brush with soap solution a mirror of the cylinder and the piston. To remove all alien particles. To dry and grease with pure engine oil.
5. To check piston landing in a cylinder opening.
5а. To measure diameter of the cylinder by a micrometer with a telescopic bar.
5б. To measure diameter and a piston konusnost, fig. Piston measurement.
5в. To subtract diameter of the piston from diameter of the cylinder for gap definition.
5г. To compare the received value of a gap to the demanded.
5д. To define suitability of the piston for this cylinder.
6. If the piston which was in the use does not approach, to pick up the new piston. (In spare parts pistons both normal, and the increased repair sizes) are delivered.
7. If the mirror of the cylinder is subject to processing, it is necessary to measure the new piston and to finish a honingovaniye diameter of the cylinder till the necessary size.
8. To mark the new piston with serial number of the cylinder for which it is intended. (On some engines pistons with diameter increased by 0,25 mm) can be established.
9. Carefully to wash out a brush with soap solution a mirror of the cylinder and the piston. To remove all alien particles. To dry and grease with pure engine oil.