BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car


BMW E30
+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engine
   - 3.1.2. Specifications
      3.1.3. Types of the repair work performed without dismantle of the engine
      3.1.4. Order of installation of the piston of the 1st cylinder in compression step VMT
      3.1.5. Cover of a head of cylinders
      3.1.6. The soaking-up collector
      3.1.7. Final collector
      3.1.8. Cam-shaft drive chain covers (M10 engine)
      3.1.9. Chain and asterisks (M10 engine)
      3.1.10. Covers of a gear belt (M20 and M40 engines)
      3.1.11. Gear belt and asterisks of a cam-shaft (M20 and M40 engines)
      3.1.12. Forward epiploons
      3.1.13. Head of cylinders
      3.1.14. Pallet
      3.1.15. Oil pump
      3.1.16. Flywheel (drive plate)
      3.1.17. Back epiploon of the crankshaft
      3.1.18. Engine mount details
   + 3.2. Dismantle and capital repairs 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. Useful tips


621199f4


3.1.5. Cover of a head of cylinders
GENERAL INFORMATION

Nuts of fastening of a cover of a head of cylinders and ventilating hose

 

Order of tightening of nuts of a cover of a head of cylinders 4-cylinder (above) and 6-cylinder (in the bottom of) engines

Removal and installation

PERFORMANCE ORDER
1. Remove the air filter.
2. Disconnect a ventilating hose from a cover of a head of cylinders.
3. On the M20 engine remove a rack of the soaking-up collector and an arm of sensors (or the valve of stabilization of turns of idling), previously having disconnected sockets.

4. Turn off nuts of fastening of a cover. Disconnect the holder of high-voltage wires, or remove a casing of wires from hairpins (in the drawing on the right – the 4-cylinder engine, in the drawing at the left – the 6-cylinder engine).
5. Uncover a head of cylinders of the M40 engine and laying.
6. On the M40 engine also uncover a cam-shaft.
7. Get a semicircular cap in a forward part of a head of cylinders of the M40 engine (if are provided).
8. Before installation clear the condensed surfaces of a cover and a head of cylinders of the remains of consolidations.
9. Replace a semicircular cap, having greased the place of a prileganiye to laying of a cover of a head of cylinders with RTV sealant. Wrap nuts within no more than 10 min. after putting sealant.
10. Uncover also laying. On the M40 engine also uncover a cam-shaft. Get a semicircular cap in a forward part of a head of cylinders (if are provided).
11. On the M40 engine establish a cover of a cam-shaft and new laying. Evenly tighten nuts as it should be specified illustrations, without allowing their excessive tightening not to sdeformirovat a cover.
12. Further assembly is carried out upside-down.