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
      Reduction of the piston of the first cylinder in the provision of the top dead point of a step of compression (VMT)
      Removal and installation of a cover of the gas-distributing mechanism
      Removal and installation of a pulley of a cranked shaft
      Removal and installation of a cover of a drive of GRM
      Removal and installation of a belt of a drive of GRM
      Removal and installation of a natyazhitel of a gas-distributing belt and cogwheels of a drive of GRM
      Replacement of an epiploon of a camshaft
      Removal, check of a condition and camshaft installation with the case of the gas-distributing mechanism
      Removal, check of a condition and installation of components of a drive of valves
      Removal and installation of a head of cylinders
      Removal and installation of the pallet of a case
      Removal, service and installation of the oil pump
      Removal, check of a condition and flywheel installation / driving disk
      Replacement of epiploons of a cranked shaft
      Check of a condition and replacement of support of a suspension bracket of the power unit
   + 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
+ 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, check of a condition and camshaft installation with the case of the gas-distributing mechanism

Removal

Removal with use of the Opel No. MKM-891 adaptation

In the presence of the special Opel No. MKM-891 adaptation the camshaft can be removed from the engine without preliminary dismantle of the case of the gas-distributing mechanism. The adaptation is established on the mechanism case at the removed cover of the last (see. Removal and installation of a cover of the gas-distributing mechanism) also allows to make an otzhimaniye of hydraulic jacks of klapanny gaps. Further dismantle of a cogwheel of a shaft (is made see. Removal and installation of a natyazhitel of a gas-distributing belt and cogwheels of a drive of GRM), a face cover and a persistent plate (see the following paragraph). Now the shaft can be taken from the case through an opening in its left end face.

Before installation of the adaptation develop a cranked shaft on 90 ° from situation VMT (see. Check of kompressionny pressure in cylinders) that will allow to prevent risk of damage of the engine as a result of input of valves in contact to the bottoms of pistons.

Removal without use of the special adaptation

Without use of the special adaptation the camshaft can be removed from the engine only assembled with the case of the gas-distributing mechanism. As the case the same bolts, as a head of cylinders, is meant as well dismantle of the last (see. Removal and installation of a head of cylinders).

Theoretically there is a possibility of removal of a shaft with the case with head leaving on the block, however it is connected with risk of damage of sealing laying. At making decision on works by such option address to the materials Removal and installation of the pallet of a case, having taken into consideration the fact of lack of need of removal of the inlet pipeline and a final collector. Remember thus that after installation of assembly of a camshaft with the case of the gas-distributing mechanism there can be a need for replacement of sealing laying of a head that will nullify all efforts on (by the way, very insignificant) economy of time.


 PERFORMANCE ORDER

  1. Having removed the case of the gas-distributing mechanism with the camshaft established in it, turn out fixing bolts and remove the ignition module.
  1. Turn out fixing bolts and remove the face cover established on the left side of the case of the gas-distributing mechanism. Remove from the case a sealing ring — can throw out it as at assembly the ring is subject to replacement without fail.
  1. Measure size axial люфта a camshaft, filling edges measuring щупа between a persistent plate (1) and shaft. If the result of measurement falls outside the limits an admissible range (see. Specifications), the persistent plate should be replaced. Turn out two fixing bolts and take a persistent plate from the case — try to remember the adjusting provision of components.
  1. Carefully take a shaft from the case — try not to injure bearing necks and working surfaces of cams.

Check

 PERFORMANCE ORDER

  1. Measure height (I) case of the gas-distributing mechanism from an interfaced surface to an interfaced surface. If the result of measurement makes less than 65 mm, replace the case.
  1. Having removed a shaft, study a condition of working surfaces of bearings of sliding in case beds. In case of identification of signs of obvious wear or задиров, the case is subject to replacement — check also a condition of the corresponding necks of a shaft.

Check also passableness provided in the case маслостоков.

  1. Actually the shaft should not have traces of scratches on necks and working surfaces of cams. If this sort of defects take place, the shaft also is subject to replacement. In case of identification задиров on working surfaces of cams, study a condition of levers of a drive of the corresponding valves (see. Removal, check of a condition and installation of components of a drive of valves).
  2. Make sure of lack of signs of wear or development of a persistent plate of a camshaft, in case of need replace a plate.

Installation

 PERFORMANCE ORDER

  1. By means of a screw-driver accurately take an old epiploon from the landing nest in the case of the gas-distributing mechanism. Check purity of walls of a landing nest, then press in it a new epiploon (sealing sponges inside) aflush with an external surface of the case.
  2. Plentifully grease a camshaft, basic bearings of the case and an epiploon sponge with pure impellent oil, then accurately fill a shaft in the case — try not to damage cams, necks and epiploon sponges.
  3. Fill on the regular place a persistent plate — track correctness of combination it with a pro-point in a shaft pin. Tighten fixing bolts with demanded effort. Check size axial люфта in bulk (see above).
  4. Establish a new sealing ring on pure, dry wiped back surface of the case. Establish a face cover and tighten bolts of its fastening with demanded effort.
  5. Establish on the case the ignition module.
  6. If removal was made with use of the Vauxhall adaptation, remove it and establish into place a camshaft cogwheel. Return a cranked shaft to situation VMT and establish a gas-distributing belt (see. Removal and installation of a belt of a drive of GRM and Removal and installation of a natyazhitel of a gas-distributing belt and cogwheels of a drive of GRM).
  7. If the adaptation was not applied, establish the case of the gas-distributing mechanism with the shaft enclosed in it on the place and fix it bolts of a head of cylinders (see. Removal and installation of a head of cylinders).