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Mercedes S-class W2021993-2000 of releaseRepair and car operation |
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Mercedes W202 + 1.2. The general data + 2. Maintenance service - 3. Engines 3.1.2. Identification number + 3.1.3. The engine 3.1.4. Cars with the conditioner 3.1.5. The bottom cover of a motor compartment 3.1.6. Covers of cast apertures 3.1.7. Натяжитель chains + 3.1.8. A cover of a head of the block of cylinders + 3.1.9. A head of the block of cylinders + 3.1.10. Camshafts 3.1.11. Hydraulic тарельчатые pushers 3.1.12. Maslootrazhatelnye caps 3.1.13. Valves 3.1.14. Directing valves 3.1.15. Saddles of valves in a head of the block of cylinders 3.1.16. A compression + 3.1.17. A klinovyj belt 3.1.18. Diagnostics of malfunctions (DB) 3.1.19. Broad-brush observations 3.1.20. Repair work without engine dismantle + 3.1.21. Engine major repairs + 3.2. The diesel engine (ДД) 3.2.3. Cars with the conditioner 3.2.4. The bottom cover of a motor compartment 3.2.5. Covers of cast apertures 3.2.6. Натяжитель chains + 3.2.7. A camshaft + 3.2.8. A head of the block of cylinders + 3.2.9. Maslootrazhatelnye caps 3.2.10. A cover of a head of the block of cylinders (2,2/2,5) 3.2.11. Hydraulic тарельчатые pushers 3.2.12. Valves 3.2.13. Directing valves 3.2.14. Saddles of valves in a head of the block of cylinders 3.2.15. A head of the block of cylinders and the motor block 3.2.16. A compression 3.2.17. Клиновой a ridge belt 3.2.18. The pulling device клинового a ridge belt 3.2.19. Diagnostics of malfunctions (ДД) + 4. Greasing system + 5. Cooling system + 6. Heating, ventilation + 7. Ignition system + 8. Fuel system + 9. Transmission + 10. A running gear + 11. A steering + 12. Brake system + 13. A body + 14. An electric equipment + 14.2. Electroschemes |
3.2.16. A compression
Compression check allows to draw conclusions on an engine condition. It will help to define, whether there are valves or pistons (a ring of pistons) in a normal state or they are worn out. Besides, based on the results of testing it is possible to solve, whether the engine is subject to replacement or it should be repaired in a complex. For the control it is necessary компрессометр, intended specially for diesel engine check. Kompressionnoe pressure in the new engine should be 26–32 bar. The difference of pressure between separate cylinders should make no more than 3 bar. If one or several cylinders have the pressure different from others more than on 3 bars it is a sign of the defective valves, the worn out piston rings or pistons in cylinders. The sequence of actions under the compression control is resulted for the engine in volume of 2,0 l. Features of engines in volume of 2,2/2,5 l
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