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


3.1.6. A soaking-up collector


1. Disconnect the battery from weight.
2. Merge cooling liquid so that level became below a soaking-up collector.
3. On injector engines disconnect a big hose from a throttle branch pipe. For expansion of working space it is recommended to remove the air filter with an air line.
4. On carburetor engines remove the air filter.
5. Disconnect from a soaking-up collector and a throttle branch pipe hoses of cooling liquid.
6. Disconnect cables of a butterfly valve and cruise control (see subsection 6.5).
7. Remove the retsirkulyatsiya valve with a tube.
8. On the M40 engine unscrew bolts and nuts.
9. Remove the top part of a soaking-up collector.
10. Remove laying.
11. On injector engines disconnect from a regulator of pressure of fuel a vacuum hose and sockets from nozzles.
12. Disconnect from the carburetor (or the fuel distributor) fuel hoses.
13. On the M40 engine remove a collector rack.
14. Disconnect from a soaking-up collector and a throttle branch pipe other wires and hoses.
15. Unscrew bolts / nut of fastening of a collector.
16. Start to turn on with peripheral sites, being displaced to the middle, turn on gradually until then while bolts / nut can be turned out by hand.
17. Remove soaking-up collector, shaking to destroy consolidation.
18. Remove laying of a soaking-up collector on the M40 engine.


The collector can be removed assembled with a throttle branch pipe, nozzles, vacuum distributors and temperature regulators, a regulator of pressure of fuel or the carburetor. At replacement of a collector rearrange the specified units.


1. Carefully clear the demountable planes of a collector and a head of cylinders.
2. Check existence on a collector of cracks, a buckling of the plane and other damages. As a rule, cracks and a buckling are observed on a surface of a prileganiye of laying, round openings under hairpins. In this case the collector is ground or changes.
3. Establish on a collector new laying which should be turned by a graphite surface to a head of cylinders.
4. Establish a collector and wrap bolts and nuts, tighten them with the set moment, from the center to the periphery in a cross order.
5. Other operations are carried out upside-down. On the M40 engine replace laying of both sections of a collector.