E30 series BMW 3

since 1983-1994 of release

Repair and car operation

E30 BMW
+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engine
   + 3.1.2. Specifications
   - 3.2. Dismantle and major maintenance of the engine
      3.2.2. Specifications
      3.2.3. Major maintenance – the general instructions
      3.2.4. Compression check in engine cylinders
      3.2.5. Major maintenance – general comments
      3.2.6. Engine diagnostics by means of the vacuum gage
      3.2.7. Major maintenance – alternatives
      3.2.8. Dismantle of the power unit
      3.2.9. Removal and engine installation
      3.2.10. Order of dismantling of the engine
      3.2.11. Dismantling of a head of the block of cylinders
      3.2.12. Cleaning and check of a head of cylinders and details of the klapanny mechanism
      3.2.13. Repair of valves
      3.2.14. Assembly of a head of the block of cylinders
      3.2.15. Removal of pistons and rods
      3.2.16. Crankshaft dismantle
      3.2.17. Intermediate shaft (only M20 engine)
      3.2.18. Cleaning of the block of cylinders
      3.2.19. Check of a condition of the block of cylinders
      3.2.20. Honningovaniye of cylinders
      3.2.21. Check of a condition of pistons and rods
      3.2.22. Check of a condition of the crankshaft
      3.2.23. Check of radical and shatunny bearings
      3.2.24. Engine assembly order
      3.2.25. Installation of piston rings
      3.2.26. Installation of an intermediate shaft
      3.2.27. Installation of the crankshaft and check of gaps in radical bearings
      3.2.28. Installation of a back epiploon
      3.2.29. Installation of rods and pistons, check of gaps in shatunny bearings
      3.2.30. Engine start-up after repair and a running in
   + 3.3. Engine electric equipment
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
+ 14. Good advice

3.2.27. Installation of the crankshaft and check of gaps in radical bearings

PERFORMANCE ORDER

1. Arrange the block so that the lower part was turned up. Turn out bolts of covers, get covers and spread out them as their installation. Get from covers and the block of cylinders old loose leaves and absolutely wipe covers and beds in the block of cylinders.
2. Clear an external surface of new radical loose leaves with oil flutes and carefully enclose them in a bed of the block of cylinders. The corresponding response loose leaves enclose in covers, having combined ledges with samples. Loose leaves not to grease. Track that lubricant openings in the block of cylinders and in loose leaves coincided.
	3. The loose leaf with flange end faces (fillets) keeps within N3 cover on the M10 engine, in N6 cover on the M20 engine and in N4 cover on the M40 engine.
	4. Establish the crankshaft and measure gaps in radical loose leaves. For this purpose put on a piece of a calibration wire on each radical neck of the crankshaft parallel to its axis. Clear surfaces of loose leaves in covers, establish covers and tighten bolts, being guided by the order specified in Specifications (see subsection 3.2.2), since the central covers and being displaced to the periphery.
	5. Unscrew bolts and carefully lift covers, compare thickness of each of crushed a provolok to a scale on packing and define gap size. Crankshaft rotation at measurements is not allowed.
6. If the gap does not correspond to norm, the wrong selection of dimensional group of loose leaves can be the reason. Be convinced that at measurements between bearings and surfaces of covers there were no pollution or oil. If the width of the crushed wire on the ends strongly differs, the radical neck of the crankshaft has a konusnost.
7. Remove from necks the remains of a wire and remove the crankshaft.
8. Grease with molybdenic greasing radical loose leaves and a face surface of the persistent radical bearing.
9. Be convinced of purity of necks of the crankshaft, then establish it in the block of cylinders. Clear surfaces of loose leaves in covers and put on each of them a thin layer of greasing.
10. Establish covers on the former places so that shooters were turned towards a forward part of the engine.
11. Wrap bolts of covers of radical bearings.
12. Tighten bolts of all covers (except a cover of the persistent radical bearing on engines M10 and М20, on the M40 engine tighten all bolts), being guided by the order specified in Specifications (see subsection 3.2.2). Begin an inhaling with the central covers, being displaced to the periphery.
13. On engines M10 and М20 tighten bolts of a cover of the persistent radical bearing with the set moment.
14. On cars from a manual transmission replace directing bearing of the crankshaft.
15. Check freedom of rotation of the crankshaft
16. Check axial люфт the crankshaft (see subsection 3.2.22). Люфт should correspond to norm if new bearings and persistent surfaces of the crankshaft are established are not worn-out.
17. Establish a new back epiploon.