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
      Reduction of the piston of the first cylinder in the provision of the top dead point of the end of a step of compression (VMT)
      Check and adjustment of phases of a gazoraspredeleniye (engines of 2.0 l)
      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 natyazhitel of chains of a drive of GRM (engines of 2.0 l)
      Removal and installation of a belt of a drive of GRM
      Removal and installation of a natyazhitel of a belt and cogwheels of a drive of GRM (engines of 1.7 l)
      Removal and installations of chains and asterisks of a drive of GRM, check of a condition of components (engines of 2.0 l)
      Replacement of an epiploon of a camshaft (engines of 1.7 l)
      Check and adjustment of gaps of valves (engines of 1.7 l of DOHC)
      Removal and camshaft installation (ов) and components of a drive of valves
      Removal and installation of the case of the gas-distributing mechanism (engines of 1.7 l of DOHC)
      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
      Replacement of an epiploon of the oil pump (engines of 1.7 l)
      Removal and installation of a maslookhladitel
      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
   + 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




Procedures of repair of diesel engines of 1.7 l and 2.0 l without their extraction from the car

Reduction of the piston of the first cylinder in the provision of the top dead point of the end of a step of compression (VMT)

General information

See. Reduction of the piston of the first cylinder in the provision of the top dead point of a step of compression (VMT).

Order of performance of procedure

Reduction of any of pistons in situation VMT is made by a provorachivaniye of a cranked shaft of the engine. If to take a detached view of the engine of a drive of GRM, the direction clockwise will be the normal direction of rotation of a cranked shaft. Remember that attempt of a provorachivaniye of a shaft counter-clockwise can lead to violation of adjustments of phases of a gazoraspredeleniye. The first is the cylinder, extreme GRM from a drive.

 PERFORMANCE ORDER

  1. Disconnect a negative wire from the battery. Immobilize ignition system (see. Head engine Electric equipment).
  2. Make sure that transmission is transferred to neutral situation, then strongly cock a lay brake / prop up back wheels of the car protivootkatny boots. To Poddomkratta a car front, establish it on props and remove the right forward wheel. At the corresponding complete set remove protection of a case.
  3. For control of provision of working ledges of cams uncover the gas-distributing mechanism. On models of 2.0 l it is alternatively possible to dismantle the vacuum pump of the servo-driver of the brake amplifier (see. Head Brake system). For the purpose of ensuring access to a control opening on a camshaft pin).
  4. On the SOHC models turn out fixing bolts and remove a pulley of a cranked shaft.
  1. By means of the key which has been put on a bolt of fastening of gear of a wheel / asterisk of a cranked shaft, turn the last in the direction of normal rotation before combination adjusting risks of a gear wheel / pulley with a reciprocal label on the basis of a cover of the oil pump (model of 1.7 l) / chains of a drive of GRM (models of 2.0 l — address to an accompanying illustration). Combination of adjusting labels guarantees reduction in position VMT of pistons of the first and fourth cylinders.

    2 — the Adjusting label on a cover of a gas-distributing chain (model of 2.0 l)
    3 — Risk on a pulley of a cranked shaft (model of 2.0 l)

  1. Now it is necessary to check, what of pistons occupies VMT of the end of a step of compression.
  1. On engines of 1.7 SOHC it is necessary to check the provision of a cam of a drive of the final valve of the first cylinder (2 — extreme GRM from a drive) — in the provision VMT of the end of a step of compression of the first cylinder this cam is developed by a working ledge up. If a cam will develop a working ledge down, in VMT of the end of a step of compression there is a piston of the 4th cylinder and a cranked shaft it is necessary to turn on 360 ° in the normal direction.
  1. On models of 1.7 l of DOHC the conclusion in a demanded point of the piston of the 1st cylinder is accompanied by combination adjusting рисок camshaft and TNVD cogwheels with carving fixing openings in the head / block of cylinders, besides, cams of a drive of both final valves of the first cylinder should be developed by working ledges up — make sure, having glanced in a maslozalivny mouth. If risks of cogwheels appear developed concerning labels on 180 °, therefore, in the provision VMT of the end of a step of compression there is a piston of the 4th cylinder and for correction of a situation it is necessary to turn a cranked shaft in the normal direction for 360 °.
  1. On engines of 2.0 l it is necessary to check the provision of cams, or a control opening in an end face of a pin of a camshaft. In the provision VMT of the end of a step of compression of the piston of the first cylinder cams (1) drive of valves of the first cylinder should be developed by working ledges symmetrically up approximately under 45 ° to a vertical.

The control opening in a pin of a shaft appears thus in situation «at 12 o'clock». If cams of a shaft are developed by working ledges down, and the control opening on a pin is in situation «at 6 o'clock», in VMT of the end of a step of compression there is a piston of the 4th cylinder and a cranked shaft it is necessary to turn in the normal direction for 360 °.

  1. Fixing of pistons in the chosen situation on models of 1.7 l of SOHC is made by blocking of a cranked shaft by means of the special KM-951 adaptation representing a core, entered into dredging in a gear wreath of a flywheel through an opening in a transmission dome. In the absence of near at hand special adaptation, it is possible to use a long bolt in diameter of 8 mm (best of all the bottom bolt of the steering column which end is ground on a cone will be suitable for this purpose).


  1. On models 1.7 DOHC fixing of pistons can be made at the expense of blocking of cogwheels of a camshaft and TNVD. Blocking of a cogwheel of a camshaft is carried out by means of bolt М6 passed in a round aperture in a spoke of a wheel and rolled in a carving opening in a head of cylinders.

The cogwheel of TNVD is blocked in a similar manner, with that only a difference that it is necessary to use bolt М8.

  1. On models of 2.0 l the cranked shaft can be blocked by KM-929 adaptation introduction in an opening of the sensor of provision of a shaft (CKP) in a forward part of the cylinder. In case of need the suitable adaptation can be made by own forces according to given on an illustration Dimensional characteristics of the adaptation for blocking of a cranked shaft (mm) in parameters. Remove the CKP sensor and track that the core of the adaptation entered into reciprocal cut in a shaft body.