Cleaning of the block of cylinders. 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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2.2.15. Cleaning of the block of cylinders

The caps established in channels of cooling of the block, can be taken hardly or even not to be taken at all.


 PERFORMANCE ORDER

  1. Take from the block of cylinders of a cap. For this purpose with a hammer and a punch strike in the block on one party of a cap, big flat-nose pliers grasp for its other edge and pull out.
  2. Remove with a scraper from the block of cylinders all traces of a material of laying. Be very careful not to leave on condensed surfaces of the tease or a dent.
  3. Remove covers of radical bearings and separate from covers and the block of cylinders loose leaves of bearings. Note to which cylinder bearings belong and they were established in a cover or in the block, and then put aside.
  4. Take from the block all caps of oil pipelines, Caps are usually established very hardly - probably it is required to drill them and to clean openings a tap. At assembly of the engine use new caps.
  5. If the engine is strongly polluted, it is necessary to send it for cleaning by steam in a mechanical workshop.
  6. After block return from a mechanical workshop once again clean openings and channels of oil pipelines. In the majority of shops of autoaccessories there are special brushes. Wash out channels water while it will not begin to follow pure, carefully drain the block and grease all otfrezerovanny surfaces with light anticorrosive oil. If the compressed air is available, for acceleration of drying use it, and blow them all openings and channels of oil pipelines.

When using the compressed air protect eyes!

  1. If the block is not strongly polluted or polluted by dirt, the corresponding cleaning can be made hot soap solution and a rigid brush. This work carry out carefully and allocate for it time enough. Irrespective of methods of cleaning be convinced that all openings and channels of oil pipelines are cleaned very carefully, the block is dried completely up and the processed surfaces are covered with light oil.
  1. Carving openings in the block for exact measurements of efforts of a tightening at assembly should be cleaned. For removal of a rust, corrosion, a carving compound or dirt wrap in each opening a tap of the corresponding size. If it is possible, clear after this operation of an opening of garbage the compressed air. Be convinced that dry - oil or other liquid can lead all openings to that at a tightening of bolts because of hydraulic pressure the block will burst. The turn now came to clear carvings of all bolts. Pay attention that BMW recommends bolts of a head of cylinders and radical bearings to replace new.
  1. Establish covers of radical bearings and a hand tighten bolts.
  2. After drawing on condensing surfaces of a suitable compound establish them in the block. Be sure that they are established plainly and against the stop, differently there can be a leak. For this purpose there are special tools, however, also successfully it is possible to apply a face head which can be inserted into a cap, the extension piece on 1/2 inches and a hammer.
  1. Put on new caps of oil pipelines non-drying hermetic and wrap them in block openings. Be convinced that they are reliably tightened.
  1. If the engine is not supposed to be collected further, for preservation it in purity cover the block with a big plastic package.


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2.2.14. Removal and check of a condition of an intermediate shaft
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2.2.16. Check of a condition of the block of cylinders