E46 series BMW 3

since 1998 of release

Repair and car operation

E46 series BMW 3
+ BMW 3 Cars (E46)
+ Current leaving and service
- Engine
   - Procedures of repair of the engine
      Removal and installation of the bottom cover of an impellent compartment
      Removal and installation of a box of an air inlet
      Compression check
      Removal and installation of the inlet pipeline
      Removal and head installation cylinders / replacement of sealing laying
      Removal and installation of camshafts
      Removal and installation of the vacuum pump
      Removal, installation and tension of a maple belt
   + System of greasing of the engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ engine Electric equipment
+ RKPP and transmission line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ electric equipment Schemes

Procedures of repair of the engine

M43TU engine (316i, 318i)


1 — a cover of a head of cylinders 2 — a camshaft 3 — a roller yoke 4 — the hydraulic jack of a gap in valves 5 — a spark plug 6 — a balancing shaft	7 — the pump of cooling liquid 8 — the thermostat 9 — maple a belt 10 — the oil filter 11 — the generator 12 — the inlet pipeline with the butterfly valve case

M52TU engine (320i, 323i, 328i)


1 — the ignition coil 2 — the oxygen sensor 3 — the catalytic converter 4 — maple a belt 5 — the vyazkostny coupling	6 — the pump of cooling liquid 7 — the thermostat 8 — the VANOS block 9 — a hydropusher 10 — camshafts

M52TU engine elements

1 — a head of the block of cylinders
2 — a cam-shaft bed
3 — laying голоки the block of cylinders
4 — a cam-shaft cover
5 — a cover of a head of the block of cylinders
6 — a slip
7 — laying
8 — laying
9 — the final valve
10 — the inlet valve
11 — maslootrazhatelny caps of valves
12 — the bottom saddle of a klapanny spring
13 — klapanny springs
14 — the top saddle of a klapanny spring
15 — crackers
16 — hydropushers of valves
17 — camshafts
18 — the VANOS block
19 — a cover of a drive of GRM
20 — a forward epiploon of a cranked shaft
21 — laying of a cover of a drive of GRM
22 — VANOS chain
23 — asterisks of cam-shafts
24 — the top natyazhitel of a chain

25 — an uspokoitel of a chain
26 — a chain of a drive of GRM
27 — a cam-shaft asterisk
28 — a crankshaft asterisk
29 — a boot of a natyazhitel of a chain
30 — an uspokoitel of a chain
31 — a natyazhitel of a chain
32 — piston rings
33 — a piston finger with lock rings
34 — a rod with the plug of the top head, a cover and bolts
35 — shatunny loose leaves
36 — radical loose leaves
37 — a cranked shaft
38 — a back epiploon of a cranked shaft
39 — a damper of krutilny fluctuations
40 — a crankshaft pulley
41 — a nave
42 — a crankshaft evezdochka
43 — the case pallet
44 — laying
45 — the oil pump
46 — gear wheels of the oil pump
47 — an asterisk of the oil pump
48 — a chain of a drive of the oil pump

M47 engine (320d)


1 — camshafts 2 — a roller yoke 3 — the soaking-up filter 4 — the catalytic converter 5 — a turbokompressor	6 — maple a belt 7 — the generator 8 — chains of a drive of the GRM mechanism 9 — the vacuum pump 10 — a nozzle

The car can be equipped with the ryadny 4-cylinder petrol engine, the 6-cylinder petrol engine or a 4-cylinder turbodiesel. The power unit is located along the car and is taken out up by the special crane.

Complete set options:

Model 316i, 318i

The 4-cylinder petrol M43TU engine in volume of 1.9 l – dvukhklapanny, with a verkhneraspolozhenny camshaft. The camshaft is given in rotation by a chain. Valves are actuated through a roller yoke. For compensation of vibration of the engine two balancing shaft, located under cranked shaft serve. A drive of valves – roller. An inlet path with changeable length of DISA.

Engine 330i characteristics

Model 320i, 323i, 325i, 328i, 330i

The 6-cylinder petrol M52TU engine has a head of cylinders and the block of cylinders from an aluminum alloy. The alloy has the improved heat conductivity and smaller weight in comparison with cast iron. 4-клапанная the head of cylinders has two camshafts with a drive from a chain with the mechanism of regulation of camshafts of VANOS. Thus both camshafts depending on number of turns and loading of the engine turn rather corresponding asterisk so that to receive the optimum moment of opening of valves. The knot copes from an engine monitor.

Model 320d

In 4-cylinder turbodiesel М47 two camshafts with the top arrangement have a chain drive and influence valves through a roller yoke. The second chain actuates the fuel pump of a high pressure. A drive of valves – roller. The diesel engine has a turbo-supercharging with changeable geometry of the turbine (VTG) and cooling of nadduvayemy air. The head of cylinders is made of an aluminum alloy. The engine is supplied with the oxidizing catalytic converter and system of a retsirkulyatsiya of the fulfilled gases.

Model 330d

6-cylinder turbodiesel М57 is characterized by exclusively high torque thanks to the general pressure head highway (common rail) of a high pressure on which fuel to nozzles moves. The head of cylinders is made of an aluminum alloy. The engine is supplied with the oxidizing catalytic converter and system of a retsirkulyatsiya of the fulfilled gases.

All engines:

Are supplied with hydrojacks of klapanny gaps.

Greasing of engines is carried out by the oil pump which at 6-cylinder engines (320i, 323i, 328i) settles down in a forward part of the pallet of a case and brought into rotation by a chain from a cranked shaft. At models 316i, 318i the oil pump is located in a cover of a box of the distributive mechanism on the end of a cranked shaft and connected to it through shlitsevy connection. Sucked-in oil arrives through openings and on pipelines to bearings of cranked and distributive shaft, and also to working surfaces of cylinders.

The pump of cooling liquid is located in a forward part of the block of cylinders and is brought into rotation by a maple belt which at the same time actuates auxiliary units, namely, the generator, the pump of the power steering and the conditioner compressor.

It is necessary to mean that the system of cooling of the engine should be all-the-year-round filled with a mix from means for protection against corrosion and freezing, and also water not containing lime. The fan of a radiator has the electric drive. The 6-cylinder engine with the conditioner on a shaft of the pump of cooling liquid in addition has a fan of a radiator which is connected via the vyazkostny coupling at the corresponding temperature. By means of so-called cooling according to characteristics at petrol engines the control system of the engine regulates temperature of opening of the thermostat and the engine temperature for achievement of the minimum fuel consumption is optimized.

On all petrol engines regulation of the moment of ignition watching a detonation is applied.

The electric motor of a radiator can turn on at the idle engine and the switched-off ignition. Owing to existence of a zone of thermal stagnation in an impellent compartment it can repeatedly occur. At work in an impellent compartment and the warm engine it is necessary to consider possibility of turning on of the electrofan. Way of elimination: Rasstykuyte I will corrode the fan electric motor. For functioning of ignition and preparation of a fuel and air mix there is a control system not demanding service of the engine that excludes need of adjustment of the moment of ignition or idling within carrying out maintenance.