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




Dismantling of a head of cylinders

The new or restored head can be ordered on HUNDRED Opel or from a warehouse of the producer. In view of that at carrying out dismantling and check of a condition of a head some difficult and expensive adaptations be required, it will be cheaper possible to get the new or restored head.


At the corresponding complete set right after removal of a head take from the engine block a jet (ы) oil dispersions, clean it (them) and combine in a separate plastic bag.

Dismantling of a head of cylinders demands preliminary dismantle of the klapanny mechanism (inlet and final valves with accompanying components). It is meant that levers of a drive of valves and a camshaft (ы) are already taken from a head.

 PERFORMANCE ORDER

  1. Remove a head of cylinders from the engine block (see. Procedures of repair of petrol SOHC engines without their extraction from the car, Procedure of repair of petrol DOHC engines without their extraction from the car or Procedure of repair of diesel engines of 1.7 l and 2.0 l without their extraction from the car).
  1. By means of the special tool compress a spring (ы) the first valve and take from a flute on a core crackers of the cutting lock of a plate (use the magnetized core, korntsangy, or nippers).
  1. Carefully release the tool and remove from the valve a plate of a spring, a spring (ы), a maslootrazhatelny cap and a spring saddle (depending on a complete set).

    A — Removal of a plate of a spring (crackers are taken, the compressing adaptation is removed)
    B — Extraction of a klapanny spring
    C — Removal of a maslootrazhatelny cap

A.

B.

C.

If crackers "became attached" and do not give in to extraction, slightly knock with a hammer on the tool for a szhimaniye of springs from a clamp.

  1. The removed components of klapanny assembly combine in the separate accurately numbered polyethylene package / a plastic glass.
  2. Further, take the valve, having pushed it in the combustion chamber. If there is a valve jamming in the directing plug, push it back in a head and an oselok or a file with small tooth accurately smooth out flute edges under installation of crackers.
  3. Operating in a similar manner, dismantle the remained klapanny assemblies. Put removed components of each of valves in the separate package / glass equipped with the corresponding marking — at assembly each detail should be established strictly on the former place.

After all components of the klapanny mechanism will be taken and combined in the organized order, it is possible to start performance of procedures of cleaning and check of a condition of a head (at full-scale regenerative repair of the engine before finish its dismantling).