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

2.41. Piston fingers and rings

GENERAL INFORMATION

Dismantle of a piston finger

Gap measurement in the lock of a piston ring

1. FLAT ЩУП
2. PISTON RING
3. THE GAP IN THE LOCK OF THE RING WHICH IS ESTABLISHED IN THE CYLINDER IN THE BOTTOM SITUATION

Measurement of a lateral gap of a ring in a flute

MEASUREMENT OF THE LATERAL GAP OF THE RING BY MEANS OF FLAT ЩУПА

The piston assembled with a rod

1. MASLOSJEMNOYE RING
2. TOP KOMPRESSIONNOYE RING
3. BOTTOM KOMPRESSIONNOYE RING
4. BROAD RING

Installation of a piston finger

Arrangement of locks of piston rings

1. LOCK OF THE BROAD RING
2. RING MASLOSJEMNOGO'S LOCK
3. BOTTOM KOMPRESSIONNOGO'S LOCK OF THE RING
4. TOP KOMPRESSIONNOGO'S LOCK OF THE RING

Piston installation in the cylinder

1. THE LABEL ON THE BOTTOM OF THE PISTON SHOULD BE TURNED TO THE FORWARD PART OF THE ENGINE.

To disassemble

PERFORMANCE ORDER

1. To remove piston rings by means of a stripper. The dismantled rings are not subject to further use.

2. To place the piston assembled with a rod in the adaptation and выпрессовать a piston finger, see fig. Dismantle of a piston finger.

To clear

PERFORMANCE ORDER

The piston, finger and rod from:
      – dirt;
      – deposit;
      – film deposits. Flutes in the piston are necessary for clearing to metal. Film deposits from piston fingers delete after a soaking them in liquid for carburetor cleaning.

Prevention

In order to avoid poisonings it is necessary to avoid steam inhalation and contact of solvent to open sites of a body.

Not scrape a piston skirt.

To check

PERFORMANCE ORDER

1. Rod.

1а. Existence of deformations of a bend or torsion.
– To establish on a rod the bottom cover and to tighten shatunny bolts номиналь the ny moment.
– To establish a rod assembled on opravka and to check it on existence of deformations of a bend and torsion.

1б. The deformed rods are not subject to repair, it is necessary to replace them. Before installation to check a form of a new rod.

1в. Seats of loose leaves in the bottom head of a rod on existence of wear tracks and roughnesses.

1г. To check shatunny bolts on existence of residual deformations of stretching, having compared them on length to new bolts.

1д. To check existence задиров in the plug of the top head of a rod.

2. Piston finger.

2а. Existence задиров.

2б. Development existence because of the wrong installation.

2в. Finger landing in the plug of a rod and piston lugs.

3. Piston.

3а. Existence задиров on a skirt.

3б. Existence of cracks.

3в. Damages of walls of flutes for piston rings.

3г. Wear.

To measure

PERFORMANCE ORDER

1. Piston rings.

1а. To pick up a set of new piston rings.

1б. To measure flat shchupy a gap in the ring lock, fig. Gap measurement in the lock of a piston ring. To establish a ring in the cylinder on the height corresponding to the bottom dead point of the piston. For moving of a ring to use as an opravka the piston. To measure a gap in the ring lock, fig. Gap measurement in the lock of a piston ring. If the gap is less nominally го, carefully to process a file butt surfaces of a ring.

1в. To measure a lateral gap of a kompressionny ring. To insert a kompressionny ring into the top flute of the piston and to measure flat shchupy a lateral gap, fig. Measurement of a lateral gap of a ring in a flute. If a ring too high to try to pick up a suitable ring. If necessary to provide normal landing of a ring in a flute it is necessary to finish ring height till the necessary size grinding. Operational development of a ring carry out an emery paper with a substrate from a glass plate.

Prevention

It is forbidden to chisel flutes in the piston. In flutes it is necessary to remove large roughnesses with the file end carefully.

To collect

PERFORMANCE ORDER

1. A rod with the piston.

Prevention

At assembly it is necessary сориентировать the piston concerning a rod so that a label on the piston (fig. The piston assembled with a rod) settled down from that party of a rod which is turned to a forward part of the engine.

1а. To place the piston and a rod in a screw press, fig. Installation of a piston finger.

1б. To adjust position of the screw of a press.

1в. To grease a piston finger with pure engine oil.

1г. To press a finger in the piston.

To check

PERFORMANCE ORDER

Free moving of the piston concerning a finger.

To establish or attach

PERFORMANCE ORDER

1. Set of maslosjemny rings:
      – broad ring;
      – bottom maslosjemny ring;
      – top maslosjemny ring.

2. Top and bottom kompressionny rings. Marking of rings should settle down from above.

Prevention

For installation of rings on the piston to use a stripper or other adaptations. It is not necessary to expand too strongly rings as it can lead to ring breakage.

For ensuring reliable consolidation of gases in the cylinder it is necessary to develop rings so that locks of rings settled down definitely, fig. Arrangement of locks of piston rings.

3. To grease a mirror of the cylinder and piston rings with pure engine oil.

4. To turn a cranked shaft in the provision of the bottom dead point.

5. To establish protective rubber tubes on shatunny bolts.

6. To establish the device for compression of piston rings, fig. Piston installation in the cylinder.

7. To develop the piston assembled with a rod so that the label on the bottom of the piston was turned forward. To insert the piston into the cylinder.

Prevention

It is necessary to show care when lowering piston in the cylinder not to injure the bottom head of a rod a neck of a cranked shaft.

8. To remove protective rubber tubes.

9. To establish loose leaves of the shatunny bearing.

10. To fix a cover of the bottom head of a rod.

Prevention

To plant into place a bearing cover in easy blows of a hammer. Not to draw a cover bolts. To tighten shatunny bolts, then to release on one turn and to tighten the demanded moment.

To check

PERFORMANCE ORDER

To press a rod and to shift it serially forward and back, to check absence of jamming of a rod.