Opel Astra
+ Cars Opel Astra and Zafira
+ The operation manual
+ Routine maintenance
- The engine
Specifications
Check компрессионного pressure in cylinders
Diagnostics of a condition of the engine with vacuum gauge application
+ Procedures of repair of petrol engines SOHC without their extraction from the car
- Procedures of repair of petrol engines DOHC without their extraction from the car
Reduction of the piston of the first cylinder in position of the top dead point of a step of compression (ВМТ)
Removal and cover installation газораспределительного the mechanism
Removal and installation of a pulley of a cranked shaft
Removal and installation of a cover of drive ГРМ
Removal and installation of a belt of drive ГРМ
Removal and installation of cogwheels cranked / camshafts and intermediate rollers
Replacement of epiploons of camshafts
Removal and installation of camshafts and pushers of valves, check of a condition of components
Removal and installation of a head of cylinders
Removal and pallet installation картера
Removal and installation of the gauge of level of impellent oil
Removal, service and installation of the oil pump
Removal, check of a condition and flywheel / installation приводного a disk
Replacement of epiploons of a cranked shaft
Check of a condition and replacement of support of a suspension bracket of the power unit
Removal, installation and adjustment of the balancing mechanism of a cranked shaft (engines 2.0)
+ Procedures of repair of diesel engines of 1.7 l and 2.0 l without their extraction from the car
+ The general and engine major repairs
+ Systems of cooling, heating
+ The 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, installation and adjustment of the balancing mechanism of a cranked shaft (engines 2.0 )
Removal
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Some engines of 2.0 l DOHC are equipped by the balancing block (2) established between the block of cylinders and the main section of the pallet картера. The block consists of two balancing shaft rotating in opposite directions with a drive from a cranked shaft. |
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- Remove assemblage of the pallet with маслозаборником (Removal and pallet installation картера see).
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- In stages on one having weakened fixing bolts, turn out them and remove the balancing mechanism from the block of cylinders in gathering with the adjusting lining (1) established between balancing assemblage and the block of cylinders.
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Installation
If works were performed on service of a cranked shaft, or replacement of the balancing mechanism of the engine was made, before installation of the last it will be necessary to adjust люфт gearings of teeths приводных gear wheels.
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At installation of the former mechanism provided that with cranked shaft no works were made, necessity for the given adjustment disappears. |
Competent adjustment of gearing of gear wheels out of conditions of firm car repair shop Opel can be made only with application of special adaptation KM-949.
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- Prepare the special adaptation. Result the engine in position ВМТ of the end of a step of compression of the piston of the first cylinder (Reduction of the piston of the first cylinder in position of the top dead point of a step of compression (ВМТ) see.
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- Develop gear wheels of balancing shaft so that pins of the last have settled down лысками downwards and strictly horizontally.
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- Establish an adjusting lining on the top interfaced surface of balancing assemblage. Press assemblage to the block of cylinders. Make sure that the gear wheel of a shaft of the mechanism has entered into gearing with a gear wheel of a cranked shaft, then screw fixing bolts and tighten them with demanded effort.
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- Fix adaptation KM-949. Screw a long bolt with накаткой in an end face of a pin of a balancing shaft from outside the inlet pipeline. Establish the measuring lever in position of "9 hours» if to look at the engine behind. By hand tighten a bolt.
- Screw a short bolt with накаткой in an end face of the second balancing shaft. Tighten a bolt by hand.
- Establish on balancing assemblage or the block of cylinders циферблатный a measuring instrument so that it плунжер rested against the measuring lever between dredging on its smooth surface of the lever.
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- For a bolt with накаткой turn the left balancing shaft clockwise against the stop and null a measuring instrument.
- Turn a shaft against the stop counter-clockwise, consider instrument readings and write down result.
- Having received results of all four measurements, turn a cranked shaft for a bolt of its cogwheel clockwise so that the measuring lever on "inlet" balancing to a shaft has appeared in position «at 6 o'clock». Ослабьте a bolt with накаткой also move the lever to position «at 9 o'clock». Repeat measurement and read two more instruments, every time turning a balancing shaft.
- If the result though one of measurements falls outside the limits an admissible range (Specifications see), hence, люфт gearings of gear wheels requires adjustment. Adjustment is reached by selection of the remote linings established between the block of cylinders and balancing assemblage. Linings are marked according to thickness (Specifications see), — the code is beaten out directly on a lining surface.
- Having defined size of a backlash and, knowing a thickness of an old lining, it is possible to calculate a thickness of a demanded replaceable lining. Linings are issued with step of a thickness of 0.02 mm. Let, for example, the backlash size at the established lining «70» made 0.08 mm. If a lining to replace on № 67, the backlash size will be reduced to 0.06 mm.
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Installation several linings is not supposed at once! |
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- Having picked up a lining and having established in gathering with it the balancing block, make a series of control measurements. In case of need repeat procedure of selection of a lining.
- Remove a measuring instrument and turn out bolts from end faces of balancing shaft.
- Establish the pallet картера (Removal and pallet installation картера see).
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