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
      3.1.3. Kinds of the repair work which is carried out without dismantle of the engine
      3.1.4. An order of installation of the piston of 1st cylinder in ВМТ a compression step
      3.1.5. A cover of a head of cylinders
      3.1.6. A soaking up collector
      3.1.7. A final collector
      3.1.8. Covers of a chain of a drive of a cam-shaft (engine M10)
      3.1.9. A chain and asterisks (engine M10)
      3.1.10. Covers of a gear belt (engines M20 and М40)
      3.1.11. A gear belt and cam-shaft asterisks (engines M20 and М40)
      3.1.12. Forward epiploons
      3.1.13. A head of cylinders
      3.1.14. The pallet
      3.1.15. The oil pump
      3.1.16. A flywheel (a leading disk)
      3.1.17. A back epiploon коленвала
      3.1.18. Engine mount details
   + 3.2. Dismantle and engine major repairs
   + 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

3.1.8. Covers of a chain of a drive of a cam-shaft (engine M10)

The prevention

The top cover of a chain can be removed separately. For removal of both covers the special tool is required.


1. Disconnect the battery from weight.
2. For removal of the bottom cover remove the fan with a casing (subsection 4.6 see), a radiator (subsection 4.5 see) and a pulley of a belt of the fan (subsection 4.6 see).
3. Remove the pump of a cooling liquid (subsection 4.7 see).
4. On a part of cars uncover the ignition distributor, бегунок and a plastic casing of black colour under бегунком.
5. Uncover heads of cylinders (subsection 3.1.5 see).
6. If the bottom cover turn away a pulley bolt коленвала acts in film, having fixed its adaptation BMW 11 2 100 or equivalent, or having stopped a flywheel through an observation port the big screw-driver. Remove a pulley a stripper, stripper captures should rest against a wall of an internal flute of a pulley.
7. Turn on заглушку and get a spring натяжителя chains and плунжер, meaning considerable effort of straightening of a spring.
8. Turn away bolts and nuts and remove the top cover. Sketch an arrangement of each bolt of fastening that at assemblage to turn them on former places. If necessary displace a cover hammer blows through the wooden prorate.
9. Turn away bolts and nuts of fastening of the bottom cover. Keep in mind that from below the cover fastens 3 bolts to the oil pallet of the engine, it is necessary to release all bolts of the pallet. Turn away 3 specified bolts of fastening of a cover of a chain to the oil pallet.
10. The sharp knife inserted under a lining between a cover and the pallet, cautiously not to damage a lining, separate the bottom cover.
11. Easy blows of a hammer through the prorate destroy consolidation between a cover and the block of cylinders, uncover.
12. Cautiously clear condensed planes of a cover and the block of cylinders of the rests of consolidations, having taken measures against damage of planes.


1. Replace a forward epiploon (subsection 3.1.12 see).
2. Put hermetic drops on demountable planes of the pallet and the bottom cover of a chain, and also to the place of a joint of a lining and the block of cylinders.
The prevention

If the pallet lining in a place прилегания chain covers is damaged, it is possible to cut off a part of the old lining supporting the block of cylinders and to replace with its piece from a new lining which in accuracy corresponds to the replaced. Paste a lining piece to the pallet special glue and put drops of hermetic RTV.

3. Establish a new lining of the bottom cover, having greased with its hermetic and gradually tighten bolts of fastening with the set moment in a cross order. At first tighten bolts of fastening of a cover to the block of cylinders, then bolts of fastening of the pallet. At excessive выступании linings cut it on a contour. After drawing of hermetic assemblage should be finished not later than through 10 mines, otherwise hermetic will harden.
4. Establish the top cover of a chain, having cut off an edge acting parts of a lining.
5. Further assemblage is carried out upside-down.