Check of a condition of a cranked shaft. BMW the 5th E28/E34 series (from 1981 to 1993 of release)
Repair of BMW E28 and series E34 from 1981 to 1993
1. Cars of the BMW brand of 5-series
2. Engine
2.1. The repair work which is carried out without extraction of the engine from the car
2.2. Procedures of major maintenance of components of the engine
2.2.1. General information
2.2.2. General information about major maintenance of the engine
2.2.3. Check of extent of compression
2.2.4. Ways of removal of the engine and precautionary measure
2.2.5. Removal and engine installation
2.2.6. Options of major maintenance of the engine
2.2.7. An order of dismantling of the engine at major maintenance
2.2.8. Dismantling of a head of cylinders
2.2.9. Cleaning and check of a condition of a head of cylinders and components
2.2.10. Service of valves
2.2.11. Assembly of a head of cylinders
2.2.12. Removal of pistons / rods
2.2.13. Removal of a cranked shaft
2.2.14. Removal and check of a condition of an intermediate shaft
2.2.15. Cleaning of the block of cylinders
2.2.16. Check of a condition of the block of cylinders
2.2.17. Honingovaniye of cylinders
2.2.18. Check of a condition of pistons / rods
2.2.19. Check of a condition of a cranked shaft
2.2.20. Check of a condition of radical and shatunny bearings
2.2.21. Engine balance of assembly at major maintenance
2.2.22. Installation of piston rings
2.2.23. Installation of an intermediate shaft
2.2.24. Installation of a cranked shaft and check of lubricant gaps of radical bearings
2.2.25. Installation of a back epiploon of a cranked shaft
2.2.26. Installation of pistons / rods in collecting and check of lubricant gaps in bearings of rods
2.2.27. Start and an engine running in after major maintenance
2.2.28. Diagnostics of malfunctions of the engine
3. Cooling system
4. Power supply system
5. Ignition system
6. Control systems of the engine and decrease in toxicity of the fulfilled gases
7. System of production of the fulfilled gases
8. Coupling
9. Manual box of gear shifting (RKPP) and automatic transmission (AT)
10. Transmission line
11. Steering and suspension bracket
12. Brake system
13. Body
14. Control body sizes
15. Heater and air conditioner
16. System of onboard electric equipment
17. Routine maintenance of the car
18. Size table and adjusting data
19. Schematic electric circuits
20. Governing bodies and operation receptions
21. System of onboard diagnostics - a principle of functioning and codes of malfunctions
 








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2.2.19. Check of a condition of a cranked shaft

 PERFORMANCE ORDER

  1. With scraper, file or abrasive stone remove from lubricant openings of a cranked shaft all agnails.
  1. Wash out a cranked shaft solvent and drain the compressed air (if it is available). Do not forget to clean a rigid brush channels of oil pipelines and to wash out them solvent.
  1. Check necks of radical bearings and bearings of rods on existence of non-uniform wear, furrows, dents and cracks.
  1. Carry out on each neck several times a copper coin. If on a neck there are copper traces, it too rough and it it is necessary to grind.
  1. Check other parts of a cranked shaft on existence of cracks and other damages. If necessary charge survey of a cranked shaft of a mechanical workshop.
  1. By micrometer measure diameters of necks of radical and shatunny bearings and compare results of measurements to requirements of the Size table and adjusting data at the end of the Management. Having measured in several points, it is possible to define what ovality have necks. To define size of a konusnost of necks, measure diameters of necks at their edges, near cheeks of cranks.
  1. If necks of a cranked shaft are injured, have a konusnost, ovality or are worn-out over the limits specified in Tabliye of the sizes and adjusting data at the end of the Management, send a cranked shaft for polishing in a mechanical workshop. Be convinced that after polishing of a cranked shaft loose leaves of the correct size are applied.
  1. Check on the ends of a cranked shaft condensed by epiploons, on existence of damages and wear. If the epiploon developed a flute or if it has jags or scratches in a thorn, after engine assembly the new epiploon can proceed. In certain cases in a mechanical workshop can repair a thorn, напрессовав on it the thin plug. If repair is impossible, it is necessary to establish other or new cranked shaft.
  1. Check a condition of loose leaves of radical and shatunny bearings (look the Section Check of a condition of radical and shatunny bearings).


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2.2.18. Check of a condition of pistons / rods
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2.2.20. Check of a condition of radical and shatunny bearings