E30 series BMW 3

since 1983-1994 of release

Repair and car operation

+ 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


3.2.14. Assembly of a head of the block of cylinders

1. Before assembly the head of cylinders should be completely cleared.
2. If the head was given in repair, on it should be already established valves and assembly it is necessary to begin, being guided by point 7.
3. Grease a core of the 1st valve with fresh oil for the engine (or molybdenic greasing) and establish in the corresponding directing plug.
4. Dip a maslosjemny cap into fresh oil for the engine and dress on a core of the valve and on directing plug, finalize a cap an opravka, slightly пристукнув on it a hammer. It is necessary to mean that on a part of engines maslosjemny caps of inlet and final valves differ.

5. Compress the adaptation a spring and insert crackers into a flute on a valve core.
6. Repeat procedure for all valves, having established all details on former places (if the removed details of the klapanny mechanism are established).
Engines M10 and М20
7. Collect yokes with rollers as it should be the return to dismantling, track correctness of installation of rollers (see subsection 3.2.11).

8. Grease necks of a cam-shaft and cams and establish in a head of cylinders so that necks did not touch yokes (which wring out).
M40 engines
9. Grease openings in a head of cylinders and establish hydropushers on former places.
10. Establish disks, levers of pushers and fingers of levers on former places.
11. Grease cam-shaft beds in a head of cylinders.
12. Establish a cam-shaft in a head of cylinders so that valves of the 1st цидиндра opened, the final valve of the 4th цидиндра was closed, and inlet – is open.
13. Grease covers of basic necks of a cam-shaft. establish them on I sweep and screw bolts. Tighten bolts evenly and gradually, till the set moment.
14. Replace a forward epiploon of a cam-shaft (see subsection 3.1.12).
All engines
15. Establish an oil pipeline branch pipe, having replaced a sealant and having tightened bolts with the set moment.
16. Establish a head of cylinders (see subsection 3.1.13).