Removal 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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2.2.13. Removal of a cranked shaft

The cranked shaft can be removed only after removal of the engine from the car. It is supposed that the flywheel or a driving disk, a damper of krutilny fluctuations, a chain or a gazoraspredeleniye belt, the pallet, the oil pump and pistons/rods are assembled already removed. Before removal of a cranked shaft it is necessary to unscrew bolts and to remove the case of a back epiploon.


 PERFORMANCE ORDER

  1. Before removal of a cranked shaft check axial люфт. Establish the tsiferblatny indicator so that its rod was parallel to a cranked shaft and concerned its end face or one of crank covers.
  1. Shift a cranked shaft back against the stop and null the indicator. Then shift a cranked shaft against the stop forward and take readings of the indicator. Axial люфт makes that distance on which the cranked shaft moved. If it exceeds maximum axial люфт, given in the Size table and adjusting data at the end of the Management, check wear of persistent surfaces of a cranked shaft. If wear is not found, new radical bearings will correct a situation.
  2. If the tsiferblatny indicator is inaccessible, it is possible to use щупы. Find the radical bearing with flanges from one of the parties which is called as the "persistent" radical bearing (look the Section Installation of a cranked shaft and check of lubricant gaps of radical bearings, item 2). Accurately pick up or shift a cranked shaft forward against the stop. For definition of a gap insert between cranked shaft and a forward surface of the persistent radical bearing щупы.
  3. Check existence of markings of an arrangement on covers of radical bearings. They should be consistently numbered from a forward part of the engine to the back. If is not present, mark them in figures with the help чеканов or a center punch. Covers of radical bearings the cast shooters pointing to a front of the engine usually have. Moving from edge of the engine to the center weaken step by step on a turn quarter bolts of fastening of covers of radical bearings that they could be turned on a hand. If hairpins are applied, at installation of a cranked shaft provide their subsequent installation on former places.
  1. Slightly strike on a cover with a hammer with an elastic head, then separate them from the block of cylinders. If necessary for office of covers use bolts as levers. Try not to drop loose leaves of bearings if they are removed together with covers.
  1. Carefully take from the engine a cranked shaft, having lifted it up. It can appear expedient to invite the assistant, as a cranked shaft rather heavy. Having established loose leaves of bearings in the block of cylinders and a cover of radical bearings, return covers on their corresponding places on the block and a hand tighten bolts.


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2.2.12. Removal of pistons / rods
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2.2.14. Removal and check of a condition of an intermediate shaft