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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Removal of a cranked shaft

Removal of a cranked shaft possibly only from the engine taken from the car. It is meant that a flywheel / a driving disk, a pulley of a cranked shaft, gas-distributing belts / chains with gear wheels / asterisks, the case pallet, a maslozabornik, the oil pump, the bridge of covers of radical bearings a cast crossing point / balancing assembly / a maslootrazhatelny plate (depending on a complete set) and shatunno-piston groups are already dismantled (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, and Removal of shatunno-piston assemblies).


 PERFORMANCE ORDER

  1. Before starting extraction of a cranked shaft from the engine, measure its size axial люфта. Fix a measuring instrument of tsiferblatny type on the block to coaxially cranked shaft, having rested it a plunzher against a cheek of one of cranks or in an end face of a pin of a shaft.
  1. Push a cranked shaft against the stop back and null the device indicator. Now push a shaft in an opposite direction and consider the measuring instrument indication. The size of a free wheeling of a shaft in the longitudinal direction also is its axial люфт. Compare result of measurement to requirements (see. Specifications). If люфт exceeds the maximum admissible value, check on existence of signs of excessive wear persistent surfaces of a shaft. In the absence of obvious signs of wear, installation of new persistent washers usually helps to correct a situation.
  1. In the absence of near at hand tsiferblatny measuring instrument it is possible to use usual shchupy lezviyny type. Accurately shift a shaft against the stop forward on the engine, then define size of the formed gap between a cheek of a crank and a half ring of the persistent combined loose leaf of the second (diesel engines of 1.7 l of DOHC) / the third (all other engines) the radical bearing, having densely planted in it the corresponding thickness an edge (I) щупа.
  1. In a diagonal order, in stages (on 1/4 turns for an approach) weaken bolts of fastening of covers of radical bearings so that there was a possibility of their reversing manually. Depending on need put on covers of radical bearings of a cranked shaft identification marking (use a center punch or a marker).

On the majority of engines on production covers of all bearings with 1 on 5 are marked in ascending order from GRM drive.

On diesel engines of 2.0 l factory marking equips only covers of the 1st and 2nd radical bearings.

  1. Carefully обстучите covers of bearings a hammer with soft brisk also remove them from the engine block. In case of need use bolts as levers. Track, that at dismantle of covers there were no lost loose leaves of radical bearings enclosed in them.
  1. Carefully take a cranked shaft from the engine — in view of relevancy of weight of assembly it will be reasonable to secure with the help of the assistant. Track, that loose leaves of radical bearings remained in the beds in the block and covers. Establish covers on the regular places on the block, and by hand tighten fixing bolts.