BMW 3 series E30

Since 1983-1994 of release

Repair and car operation

BMW E30
+ 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

3.1.2. Specifications

THE GENERAL DATA

All the sizes long and backlashes are resulted in mm.

Working volume of engines:

  – 316i (1988-91)
1596 sm^3 (engine M40, 4-cylinder)

  – 316 (1983-88) and 318i (1983-87)
1766 sm^3 (engine M10, 4-cylinder)

  – 318i (1987-91)
1796 sm^3 (engine M40, 4-cylinder)

  – 320i (1987-91)
1990 sm^3 (engine M20, 6-cylinder)

  – 323i all)
1990 or 2316 sm^3 (engine M20 or М60, 6-cylinder)

  – 325i (1987-91)
2494 sm³(engine M20, 4-cylinder)

Numbering of cylinders:

  – An operating procedure
1–3–4–2

  – 4-cylinder
1–3–4–2

  – 6-cylinder
1–5–3–6–2–4

Greasing system:

  – Pressure of oil:

     • idling
0,5–2,0 kGs/sm²

     • at 4000 rpm
Not more low 4,0 kGs/sm²

  – Backlashes of the oil pump (М40):

     • between a conducted rotor and the case of the pump and in gearing of rotors
0,12–0,20

     • Length of a spring редукционного the valve (М40)
84,1

The inhaling moments (in Н.м.)

Заглушка натяжителя chains
35

Bolts натяжителя chains
22

Bolt of an asterisk of a cam-shaft:

  – Engines M10
10

  – Engines M20 and М40
65

Bolts of fastening of a cover of a chain to the engine:

  – Bolt М6
10

  – Bolt М8
22

  – Bolt М10
47

Pulley bolt коленвала
22

Bolt or nave nut коленвала:

  – Engine M10
190

  – Engine M20
410

  – Engine M40
310

Bolts of a head of the block of cylinders (at assemblage it is recommended to change):

  – Engine M10, 4-cylinder

     • 1st stage of an inhaling
60

     • 2nd stage (to wait 15 mines)
To tighten on 33 °

     • 3rd stage (after engine warming up)
To tighten on 25 °

  – Engine M20, 6-cylinder, bolts with 6-faced heads

     • 1st stage of an inhaling
30

     • 2nd stage
To tighten on 90 °

     • 3rd stage
To tighten on 90 °

  – Engine M40, 4-cylinder

     • 1st stage of an inhaling
30

     • 2nd stage
To tighten on 90 °

     • 3rd stage
To tighten on 90 °

Bolts of a soaking up collector:

  – Bolt М8
22

  – Bolt М7
15

  – Bolt М6
10

Nuts of a final collector:

  – Nut М7
15

  – Nut М6
10

Bolts of fastening of a flywheel (leading disk of the hydrotransformer)

105 (120)

Bolt of fastening of an asterisk of an intermediate shaft
60

Bolts of fastening of the oil pallet (except М40)
22

Bolt of fastening of an asterisk of the oil pump (М10)
10

Bolts of fastening of a cover of the oil pump (М40)
9

Bolts of fastening of a forward cover to the block of cylinders (М20 and М40):

  – Bolt М6
10

  – Bolt М8
22

Bolts of fastening of the holder of a back epiploon:

  – Bolt М6
9

  – Bolt М8
22

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