BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

+ 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


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 stream speed sensor.
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 – the drawing at the left) and a flange of a forward exhaust pipe (the M40 engine – the drawing on the right).
6. Lower the car and turn off bolts and nuts of a collector, having begun with the periphery and being displaced to the center. Moisten fastenings with the 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, buckling of the plane and other damages. Repair the damaged collector 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.