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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



3.1.2. Specifications

GENERAL INFORMATION

All sizes and gaps are specified in mm.

Working volume of engines:
  – 316i (1988-91)
1596 cm3 (engine M40, 4-cylinder)
  – 316 (1983-88) and 318i (1983-87)
1766 cm3 (engine M10, 4-cylinder)
  – 318i (1987-91)
1796 cm3 (engine M40, 4-cylinder)
  – 320i (1987-91)
1990 cm3 (engine M20, 6-cylinder)
  – 323i (all)
1990 or 2316 cm3 (engine M20 or М60, 6-cylinder)
  – 325i (1987-91)
2494 cm3  (engine M20, 4-cylinder)
Numbering of cylinders:
  – Operating procedure
1–3–4–2
  – the 4-cylinder
1–3–4–2
  – the 6-cylinder
1–5–3–6–2–4
Greasing system:
  – Pressure of oil:
     • idling
0,5–2,0 kgfs/cm2
     • at 4000 rpm
not lower than 4,0 kgfs/cm2
  – Gaps 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 of the reduktsionny valve (М40)
84,1

The inhaling moments (in N of m)

Cap of a natyazhitel of a chain
35
Bolts of a natyazhitel of a chain
22
Bolt of an asterisk of a cam-shaft:
  – M10 engines
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
Bolt of a pulley of the crankshaft
22
Bolt or nut of a nave of the crankshaft:
  – M10 engine
190
  – M20 engine
410
  – M40 engine
310
Bolts of a head of the block of cylinders (at assembly it is recommended to change):
  – Engine M10, 4-cylinder
     • 1st stage of an inhaling
60
     • the 2nd stage (to wait for 15 mines)
to tighten on 33 °
     • the 3rd stage (after engine warming up)
to tighten on 25 °
  – The 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