BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engine
   + 3.1.2. Specifications
   - 3.2. Dismantle and capital repairs of the engine
      3.2.2. Specifications
      3.2.3. Capital repairs – the general instructions
      3.2.4. Check of a compression in engine cylinders
      3.2.5. Capital repairs – general comments
      3.2.6. Diagnostics of the engine by means of the vacuum gage
      3.2.7. Capital repairs – alternatives
      3.2.8. Dismantle of the power unit
      3.2.9. Removal and installation of the engine
      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 valvate 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. Dismantle of the crankshaft
      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 conrod 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 conrod bearings
      3.2.30. Launch of the engine 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. Useful tips


3.2.18. Cleaning of the block of cylinders



Caps of channels of the cooling system are densely pressed in the block of cylinders.

1. Remove caps of channels of cooling of the block for what blow on a small beard drive inside one of the parties of a cap and get a cap flat-nose pliers.
2. Carefully clear the block of the consolidation remains.
3. Uncover with inserts, designate them and you store separately.
4. Turn out carving caps of the block of cylinders (or drill, and then banish a carving).
5. At strong pollution of the block clean all channels a vapor jet and compressed air (it is recommended to carry out in car service), wash out the block outside detergent. Banish all carving openings, clean and blow compressed air. Dry the block and oil veretenny to protect from corrosion.

6. Banish all carvings of the block of cylinders, having cleared thereby of dirt. Dry carving openings to exclude breakage of the block of cylinders at the expense of a hydraulic pressure at a bolt wraparound.
7. If the block is not really strongly polluted, then it is possible to be limited to washing with soap solution. Irrespective of a way of cleaning very carefully wash out all internal lubricant channels and well dry. Oil walls of cylinders to prevent emergence of a rust.
8. Establish covers of radical bearings, tighten bolts by hand.

9. Press new caps without distortions, previously having greased them with sealant. Wrap new caps of oil channels on non-drying sealant. Densely tighten caps.