E39 series BMW 5
since 1996-2001 of release
Repair and car operation
+ Maintenance instruction
+ Current leaving and service
- Procedures of repair of the engine
Removal and installation of the bottom guard of an impellent compartment
Removal and engine installation
Removal and installation of the inlet pipeline
Removal and installation of a head of cylinders
Removal and camshaft installation
Removal and installation of valves
Check of directing valves
Processing of saddles of valves in a head cylinders / grinding in of valves
Removal, installation and tension of a maple belt
+ System of greasing 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
+ Onboard electric equipment
+ electric equipment Schemes
+ System of onboard diagnostics
Heavy Metal & Reflected
The compression provides guidance on an engine condition, namely about degree of wear of valves and pistons (piston rings). Besides, on the basis of the data received as a result of check of a compression, it is possible to judge need of replacement of the engine or its repair.
For carrying out check it is required компрессометр.
The main indicator of a compression is the difference in pressure in separate cylinders. The difference of pressure in separate cylinders should be no more than 1.5 bar. If this value exceeds 1.5 bar, it indicates damages of valves, wear of piston rings or a cylinder surface. At achievement of a limit of wear the engine is subject to repair or replacement.
At petrol engines it is necessary to turn out spark plugs. It is recommended to combine it with planned replacement of candles. At diesel engines for check of a compression glow plugs are turned out.
Value of pressure of compression is of secondary importance, since it depends among other things from applied компрессометра. For petrol engines pressure should make not less the 10th bar, at diesel engines not less the 20th bar.
Condition of check is the charged storage battery.
For compression check the petrol engine is necessary for warming up, the diesel engine can be cold.