Daewoo Nexia

Since 1994 of release

Repair and car operation



Daewoo Nexia
+ The maintenance instruction
+ Maintenance service
+ The engine
- 3. The engine (two top camshafts)
   3.2. The general description
   3.3. Work of hydraulic jacks of backlashes
   3.4. Greasing system
   3.5. Maintenance service and repair
   3.6. Compression check
   3.7. Dismantle and engine installation in gathering
   3.8. A klinovoj belt
   3.9. Engine support
   3.10. An inlet collector and a lining
   3.11. A final collector and a lining
   3.12. A cover клапанного the mechanism and a lining
   3.13. A pulley of a cranked shaft
   3.14. A forward cover of a gear belt
   3.15. A gear belt
   3.16. Натяжитель a gear belt
   3.17. A camshaft cogwheel
   3.18. A cogwheel of a cranked shaft
   3.19. A back cover of a gear belt
   3.20. Forward consolidation of a cranked shaft
   3.21. A camshaft. Hydrojacks of backlashes of valves
   3.22. A head of the block of cylinders
   3.23. Repair of a head of the block of cylinders
   3.24. Klapannye springs. Consolidations of cores of valves
   3.25. Dismantle of valves
   3.26. Directing plugs of valves
   3.27. Expansion of apertures of plugs
   3.28. Valves
   3.29. Klapannye springs
   3.30. Saddles of valves
   3.31. The oil pallet
   3.32. A reception branch pipe with the oil filter
   3.33. The oil pump
   3.34. Repair of the oil pump
   3.35. Pistons and rods
   3.36. A flywheel. Back consolidation of a cranked shaft
   3.37. A cranked shaft
   3.38. Rods and radical bearings
   3.39. Replacement of loose leaves
   3.40. Piston fingers and rings
   3.41. The block of cylinders
   3.42. Installation of pistons
   3.43. Balancing of a disk with a gear wreath
   3.44. Repair of carving apertures
   3.45. Diagnostics of malfunctions
+ Cooling system
+ Топлевная 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



3.3. Work of hydraulic jacks of backlashes
THE GENERAL DATA

The scheme of work of hydrojacks of thermal backlashes of valves

 

1. THE CAMSHAFT CAM
2. THE HEAD OF THE BLOCK OF CYLINDERS
3. THE VALVE CORE
4. THE OIL CHANNEL
5. THE PUSHER WITH THE HYDROJACK
6. ПЛУНЖЕР
7. THE SLEEVE
8. THE RETURN VALVE
9. THE SPRING OF THE RETURN VALVE
10. THE GLASS OF THE RETURN VALVE
11. SPRING ПЛУНЖЕРА
12. THE CAVITY AND
13. THE CAVITY
14. THE DIRECTION OF ROTATION OF THE SHAFT
15. THE OIL STREAM

Hydraulic jacks provide practically беззазорные interfaces of details of a drive of valves. The backlash jack is built in a pusher of the valve and located between a tip of a core of the valve and the pusher bottom. Oil is brought to hydrojacks from lubricant system of the engine.

The jack works as follows (fig. the Scheme of work of hydrojacks of thermal backlashes of valves see).

1) In the closed position of the valve a pusher 5 and a sleeve 7 3 valves effort of a spring 11 nestle accordingly on a cam of 1 cam-shaft and a tip of a core. Pressure of oil in cavities And and is identical, the return valve 8 is pressed to a saddle by a spring 9. The backlash between the valve and a cam-shaft cam is absent.

2) At набегании a cam 1 5 last influences a pusher on плунжер 6. Moving плунжера 6 in a sleeve 7 leads to pressure growth in B.Pod's closed cavity high pressure action there are small leaks of oil through a radial backlash between a sleeve 7 and плунжером 6. As time of influence of a cam for the valve is not enough, these leaks practically do not affect synchronous movement of a pusher 5 and sleeves 7. These details, moving as a single whole, open the valve.

3) In a phase of closing of the valve pressure in a cavity Would become below pressure in a cavity And which подпитывается oil from lubricant system. The return valve 8 opens and Would pass oil in a cavity for restoration беззазорного interfaces of details of a drive of the valve.