Opel Astra, Zafira

since 1998 of release

Repair and car operation



Opel Astra
+ Opel Astra and Zafira Cars
+ Operation manual
+ Routine maintenance
- Engine
   Specifications
   Check of kompressionny pressure in cylinders
   Diagnostics of a condition of the engine with use of the vacuum gage
   + Procedures of repair of petrol SOHC engines without their extraction from the car
   + Procedures of repair of petrol DOHC engines without their extraction from the car
   + Procedures of repair of diesel engines of 1.7 l and 2.0 l without their extraction from the car
   - General and major maintenance of the engine
      Removal of the power unit from the car - methods and precautionary measures
      Removal, separation and engine installation
      Alternative versions of schemes of regenerative repair of the engine
      Sequence of dismantling of the engine
      Dismantling of a head of cylinders
      Cleaning and check of a condition of a head of cylinders
      Assembly of a head of cylinders
      Removal of shatunno-piston assemblies
      Removal of a cranked shaft
      Cleaning and check of a condition of the block of cylinders
      Honingovaniye of mirrors of cylinders
      Check of a condition of components of shatunno-piston group
      Check of a condition of a cranked shaft
      Check of a condition of radical and shatunny bearings of a cranked shaft
      Engine assembly order
      Installation of piston rings
      Installation of a cranked shaft and check of working gaps of radical bearings
      Installation of shatunno-piston assemblies and check of size of working gaps in shatunny bearings of a cranked shaft
      Trial start and engine running in after major maintenance
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

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Assembly of a head of cylinders

 PERFORMANCE ORDER

  1. Regardless of that, the head went to a workshop for carrying out service of valves, or not, before starting its assembly, once again carefully check purity of all components.
  2. After head return from a workshop in it valves with accompanying elements will be already established. In this case it is necessary to omit procedures of the following two paragraphs and at once to pass to the actions described below (see item 5).
  1. On diesel engines grease cores of valves with liquid oil and fill them in the directing plugs.
  1. Establish saddles of klapanny springs.
  1. On petrol engines establish saddles of springs, then, previously having dunked into pure impellent oil, plant on directing plug of the first valve a maslootrazhatelny cap — act extremely carefully, trying not to damage sealing edges of a cap. Napressovyvaniye of a cap on the plug is made by means of a cylindrical opravka as which the replaceable face head of the corresponding size, or a piece of a pipe of suitable diameter can be used.
  1. On diesel engines repeat procedures of the previous paragraph (the maslootrazhatelny cap is put at first on a valve core, then on directing plug).
  1. The special tool compress a spring, having lowered a plate, then establish in the opened top flute on a valve core crackers of the cutting lock. For the purpose of temporary fixing of crackers to an otpuskaniye of the tool grease them from the inside with konsistentny greasing. Slowly release a spring and make sure of reliability of landing of crackers.

Usually springs are established by rounds with the reduced step to a head.

  1. On DOHC engines establish into place pushers of valves and camshafts.
  2. On SOHC engines establish a camshaft, assemblies of hydropushers and levers of a drive of valves.
  3. Track, that the subject old components removed from a head further use were established strictly on the former places.