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
      3.1.3. Types of the repair work which is carried out without dismantle of the engine
      3.1.4. An order of installation of the piston of the 1st cylinder in VMT of a step of compression
      3.1.5. Cover of a head of cylinders
      3.1.6. A soaking-up collector
      3.1.7. Final collector
      3.1.8. Covers of a chain of a drive of a cam-shaft (M10 engine)
      3.1.9. Chain and asterisks (M10 engine)
      3.1.10. Covers of a gear belt (engines M20 and М40)
      3.1.11. Gear belt and cam-shaft asterisks (engines M20 and М40)
      3.1.12. Forward epiploons
      3.1.13. Head of cylinders
      3.1.14. Pallet
      3.1.15. Oil pump
      3.1.16. Flywheel (a leading disk)
      3.1.17. Back epiploon of the crankshaft
      3.1.18. Engine mount details
   + 3.2. Dismantle and major maintenance of the engine
   + 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

3.1.13. Head of cylinders

Removal

PERFORMANCE ORDER

1. Execute a decompression of fuel system (see subsection 6.10).

2. Remove the battery, having accepted precautionary measures.

3. Remove the air filter.

4. Disconnect from the distributor and the ignition coil high-voltage wires.

5. Disconnect a wire from the sensor of temperature of liquid.

6. Disconnect fuel hoses from the distributor of fuel (carburetor).

7. Merge cooling liquid.

8. Designate and disconnect hoses from the throttle branch pipe, a soaking-up collector, the carburetor and a head of cylinders.

9. Disconnect a cable of a drive of a zaslonka on a throttle branch pipe (carburetor).

10. Remove from a head of cylinders a final collector. On a part of cars there is no need to disconnect an exhaust pipe. It is necessary to mean that on cars the helmsman of a column stirs an intermediate shaft with the right wheel to complete removal of a collector from hairpins of a head of cylinders.

11. Disconnect from a soaking-up collector hoses of a vacuum regulator of ignition and cooling system.

12. On early models disconnect wires from the generator and a starter.

13. Remove soaking-up collector.

14. Remove a belt of the fan and the fan.

15. Uncover heads of cylinders and laying, and also semicircular caps (if are provided).

16. Establish the piston of the 1st cylinder in VMT of a step of compression.

17. Remove a chain (a gear belt). It is possible to be limited to removal of an asterisk of a cam-shaft together with a belt (chain) which should be taken aside and it is reliable to fix, without weakening a belt (chain). In this case it is necessary to expose the ignition moment again subsequently.

18. In sequence of return specified release bolts of a head of cylinders, doing 1/4 turns for reception. At this stage it is forbidden to assort the mechanism of a gazoraspredeleniye (on engines M10 and М20).

19. Remove a head, if necessary displace it the mount inserted into an opening of a collector.

20. On the M40 engine get from a flute in the case of the oil pump a sealing ring.

Installation

Order of a tightening of bolts of a head of cylinders on the M10 engine

Order of a tightening of bolts of a head of cylinders on the M20 engine (6-cylinder)

Order of a tightening of bolts of a head of cylinders on the M40 engine (4-cylinder)

PERFORMANCE ORDER

1. Clear the demountable planes of a head and the block of cylinders. At appreciable damages прошлифуйте the planes (small damages are removed a file).

2. Banish carving openings a tap and blow the compressed air.

3. Replace bolts of a head of cylinders. It is allowed to establish the removed bolts in the absence of damages of carvings after pro-race by a die.

4. Establish on a head the removed details, on the M40 engine replace a ring.

5. Lay new laying on the block of cylinders so that an inscription (or OBEN) were turned by UP up, сориентируйте laying on pins.

6. Establish a head on the block of cylinders, сориентировав on pins. On the M40 engine for the correct installation of a head it is recommended to screw old bolts with the cut heads and the cut-through groove under a screw-driver.

7. Wrap bolts.

8. Tighten bolts in the specified sequence (see fig. An order of a tightening of bolts of a head of cylinders on the M10 engine, fig. An order of a tightening of bolts of a head of cylinders on the M20 engine (6-cylinder), fig. An order of a tightening of bolts of a head of cylinders on the M40 engine (4-cylinder). The order of an inhaling is specified in the section Specifications (see subsection 3.1.2).

9. Further assembly is carried out upside-down. On engines M10 and М20 adjust valves, check gaps after engine warming up.

10. Tighten bolts of a head of cylinders (М40).