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BMW 5 Series E39since 1996-2001 releaseRepair and operation of the car |
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BMW E39 + Introduction + Maintenance instruction + Current leaving and service - Engine - Procedures of repair of the engine Check of a compression Removal and installation of the lower guard of a motive compartment Removal and installation of the engine Removal and installation of the inlet pipeline Removal and installation of a head of cylinders Removal and installation of the camshaft Removal and installation of valves Check of the directing valves Processing of saddles of valves in a head cylinders / grinding in of valves Removal, installation and tension of a maple belt + Engine lubrication system + Cooling systems, 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 + Schemes of electric equipment + System of onboard diagnostics |
Processing of saddles of valves in a head cylinders / grinding in of valves Processing of saddles of valves is required in case they have wear tracks and obgoraniye or if guides were processed. At the same time it is necessary to observe values of an adjustment corner and width of a facet. To replace saddles, using ordinary technical means it is impossible since they were installed with cooling to - 150 °C. Processing of a saddle requires the special machine. This work has to be performed in conditions HUNDRED. Values of angles of processing are given in Specifications.
Grinding in of saddles At correctly carried out processing of saddles of valves and new valves grinding in of saddles in a head of cylinders is not required. Valves have to get used only fine-grained paste. The sucker which is put on a plate of the valve is applied to grinding in. During grinding in it is necessary to raise often the valve at the same time rotating it further. It excludes formation of furrows on the ground-in surface.
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