BMW 3 series E30

Since 1983-1994 of release

Repair and car operation

+ 1. The maintenance instruction
+ 2. Maintenance service
- 3. The engine
   + 3.1.2. Specifications
   - 3.2. Dismantle and engine major repairs
      3.2.2. Specifications
      3.2.3. Major repairs – the general instructions
      3.2.4. Compression check in engine cylinders
      3.2.5. Major repairs – broad-brush observations
      3.2.6. Diagnostics of the engine with the help вакууметра
      3.2.7. Major repairs – alternatives
      3.2.8. Dismantle of the power unit
      3.2.9. Removal and engine installation
      3.2.10. An order of dismantling of the engine
      3.2.11. Dismantling of a head of the block of cylinders
      3.2.12. Clearing and check of a head of cylinders and details клапанного the mechanism
      3.2.13. Repair of valves
      3.2.14. Assemblage of a head of the block of cylinders
      3.2.15. Removal of pistons and rods
      3.2.16. Dismantle коленвала
      3.2.17. An intermediate shaft (only engine M20)
      3.2.18. Clearing of the block of cylinders
      3.2.19. Check of a condition of the block of cylinders
      3.2.20. Хоннингование cylinders
      3.2.21. Check of a condition of pistons and rods
      3.2.22. Condition check коленвала
      3.2.23. Check radical and шатунных bearings
      3.2.24. An engine assembly order
      3.2.25. Installation of piston rings
      3.2.26. Installation of an intermediate shaft
      3.2.27. Installation коленвала and check of backlashes in radical bearings
      3.2.28. Installation of a back epiploon
      3.2.29. Installation of rods and pistons, check of backlashes in шатунных bearings
      3.2.30. Start-up of the engine after repair and обкатка
   + 3.3. An engine electric equipment
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. An exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. A running gear
+ 12. A body
+ 13. An electric equipment
+ 14. A good advice

3.2.10. An order of dismantling of the engine

It is recommended to assort the engine at the special stand if the stand is not present fix the engine on an equal platform.

If the restored engine it is necessary to remove all hinged units is got, and to establish them subsequently precisely in the same order as well as at самотоятельном major repairs. Such units concern:

 – The generator and arms;
 – Details of system of decrease in toxicity;
 – The distributor of ignition, a candle and high-voltage wires;
 – The thermostat and a cover;
 – The pump of a cooling liquid;
 – Details of system of injection of fuel or the carburettor;
 – Collectors;
 – The oil filter and the gauge of pressure of oil;
 – Engine mount arms;
 – A flywheel / a leading disk of the hydrotransformer;
 – A back intensifying plate.

Before removal of hinged units put labels on linings, epiploons and other details to facilitate assemblage.

If the block of cylinders of an incomplete complete set it is necessary to remove also a head of the block of cylinders, the oil pallet and the oil pump is established.

If it is planned to carry out major repairs with full dismantling the engine should be disassembled completely in a following order:

 – A cover of a head of cylinders;
 – Soaking up and final collectors;
 – Forward covers;
 – Chains and asterisks;
 – The pump of a cooling liquid;
 – A head of cylinders;
 – The oil pump;
 – Shatunno-piston group;
 – коленвал with radical bearings;
 – A cam-shaft;
 – Platens and коромысла (except М40);
 – Hydropushers and levers of pushers (М40);
 – Crackers of springs of valves and a spring;
 – Valves.