Options of major maintenance of the engine. BMW the 5th E28/E34 series (from 1981 to 1993 of release)
фотосессия новорожденного в гнезде
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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2.2.6. Options of major maintenance of the engine

Independent repair of the engine can be executed by several options. The decision on replacement of the block of cylinders, pistons / rods in collecting and a cranked shaft depends on several factors, the condition of the block of cylinders is basic of which. Other reasons are the price, availability of a mechanical workshop, availability of spare parts, time for performance of work and level of experience of independent performance of mechanical works.

Number of options treat:

Separate parts - If check of a condition showed that the block of cylinders and the most part of components of the engine can be used again, acquisition of separate parts can be the most economic option. The block of a cranked shaft and pistons / rods should be assembled carefully checked. Even if the block has insignificant wear, surfaces of cylinders should be отхонингованы.

The set with cranked shaft - the Set (if it is available) consists of the ground cranked shaft with new suitable repair loose leaves of radical and shatunny bearings.

Sometimes the restored rods and new pistons enter into such set with rings (such set call “a set for the engine”). If the block in a good condition, necks of a cranked shaft are worn-out or have teases, the set with cranked shaft and other separate parts can be the most economic option.

The small set with the block - the Small set consists of the block of cylinders with cranked shaft and the pistons / rods established on it assembled. New bearings and all gaps are established correctly exposed. Available a camshaft, components of valves, heads of cylinders and hinged knots can be established on the block with insignificant necessary processing in a workshop or without that.

The full set with the block - the "Full" or "big" set includes a small set and the oil pump, the pallet, a head of cylinders, a cover of a head of cylinders, a camshaft, components of valves, cogwheels and a chain (or a belt) the mechanism of a drive of a gazoraspredeleniye. All components have new bearings, epiploons and laying. It is necessary to attach only the inlet pipeline, a final collector and the hinged equipment.

Attentively consider, what option the best for you, and consult in local mechanical workshops, at dealers of spare parts and at skilled masters on restoration of engines before getting or ordering new parts.


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2.2.5. Removal and engine installation
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2.2.7. An order of dismantling of the engine at major maintenance