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Saab 9-5since 1997 of releaseRepair and car operation |
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Saab 9-5 + Saab 9-5 Cars + Governing bodies and operation receptions + Settings and routine maintenance of the car - Engine General information and preparatory operations Check of kompressionny pressure Engine check by means of the vacuum gage - Repair of 4-cylinder petrol engines Reduction of the piston of the first cylinder in the provision of the top dead point (VMT) Removal and installation of a head of cylinders and natyazhitel of a driving chain Removal and installation of camshafts and valves, assessment of klapanny gaps Check and replacement of a driving chain Replacement of a belt of a drive of auxiliary units Replacement of epiploons and pulley of a cranked shaft Replacement of the oil pump Removal and installation of the pallet of a case Removal and installation of an arm of the filter, thermostat and reduktsionny valve of system of greasing of the engine Check of pressure of impellent oil Removal and installation of the power unit Removal and installation of a cover of a drive of GRM Check and replacement of a chain of a drive of balancing shaft and their asterisks + Repair of 6-cylinder petrol engines + Repair of 6-cylinder diesel engines + Systems of cooling of the engine, heating, ventilation and air conditioning + the Power supply system and production of the fulfilled gases + Systems of electric equipment of the engine + Manual box of gear shifting + Automatic transmission + Coupling and power shafts + Brake system + Suspension bracket and steering + Body + Onboard electric equipment |
Repair of 4-cylinder petrol engines Reduction of the piston of the first cylinder in the provision of the top dead point (VMT) The highest point of a piston stroke in the cylinder is called as the top dead point (VMT). Strictly speaking, in 4-тактных engines in the course of rotation of a cranked shaft this situation is reached by each of pistons twice: once at the end of a step of compression and the second – at the end of a release step. At performance of procedures of control and engine adjustments in overwhelming majority of cases position of the piston of the first cylinder in VMT of the end of a step of compression is used. Need for piston reduction in situation VMT arises at carrying out many procedures, in particular such, as service of the klapanny mechanism, removal and installation of a camshaft, components of a drive of GRM, etc. Make sure that transmission is transferred to neutral situation, then cock the parking brake, or prop up back wheels of the car protivootkatny boots. Separate sockets of electroconducting of coils of ignition and turn out spark plugs (see. Section Check and replacement of spark plugs and ignition module). Reduction of any of pistons in situation VMT is made by a provorachivaniye of a cranked shaft of the engine in the normal direction of rotation by means of a face natural by a ratchet drive (clockwise) for a bolt screwed in an end face of a forward pin of a cranked shaft. In the presence of the assistant, the preliminary provorachivaniye of the engine can be carried out by a starter (short breakthroughs) from a driver's place under the direction of the operator. Installation of the piston of the first cylinder in situation VMT
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