E30 series BMW 3

since 1983-1994 of release

Repair and car operation

+ 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


3.1.7. Final collector

Removal and installation

1. Disconnect the battery from weight.
2. Remove the air filter (if the filter is mounted over a collector) and the sensor of speed of a stream.
3. Disconnect wires from candles and take aside.
4. Designate, disconnect and take aside all wires and hoses which complicate access to a collector. Disconnect wires from the oxygen sensor (if it is provided).

5. Lift a forward part of the car and establish on supports. Working under the car, disconnect a forward exhaust pipe. Disconnect nuts of fastening of a forward exhaust pipe (the M20 engine – drawing at the left) and a flange of a forward exhaust pipe (the M40 engine – drawing on the right).
6. Lower the car and unscrew bolts and collector nuts, having begun with the periphery and being displaced to the center. Moisten fastenings by getting liquid.
7. Remove a final collector, having taken measures to damaging the oxygen sensor (M40 engine).
8. Remove laying of a final collector (M40 engine).
9. Remove laying of a forward exhaust pipe to a collector.
10. Clear a collector of the consolidation remains, check a condition of carvings of hairpins of a collector.
11. Check existence on a collector of cracks, a buckling of the plane and other damages. The damaged collector repair or it is ground or replace.
12. Establish a collector upside-down, having replaced laying. Tighten bolts and nuts, tighten them with the set moment, being displaced from the center to the periphery.