BMW 3 of the E46 series

since 1998 release

Repair and operation of the car

BMW 3 of the E46 series
+ BMW 3 Cars (E46)
+ Current leaving and service
- Engine
   - Procedures of repair of the engine
      Removal and installation of the lower cover of a motive compartment
      Removal and installation of a box of an air inlet
      Check of a compression
      Removal and installation of the inlet pipeline
      Removal and installation of a head 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
   + engine Lubrication system
+ Cooling systems, heating
+ Power supply systems, injection and release
+ Electric equipment of the engine
+ RKPP and transmission line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schemes of electric equipment

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 compensator 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 — an oil filter 11 — the generator 12 — the inlet pipeline with the case of a butterfly valve

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


1 — the ignition coil 2 — the oxygen sensor 3 — the catalytic converter 4 — maple a belt 5 — the viscous 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 of a goloka of 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 lower saddle of a valvate spring
13 — valvate springs
14 — the top saddle of a valvate spring
15 — crackers
16 — hydropushers of valves
17 — camshafts
18 — the VANOS block
19 — a GRM drive cover
20 — a forward epiploon of a cranked shaft
21 — laying of a cover of the GRM drive
22 — VANOS chain
23 — asterisks of cam-shafts
24 — the top natyazhitel of a chain

25 — an uspokoitel of a chain
26 — a GRM drive chain
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 inserts
36 — radical inserts
37 — a cranked shaft
38 — a back epiploon of a cranked shaft
39 — a damper of tortional 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 the 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 turbocompressor	6 — maple a belt 7 — the generator 8 — GRM mechanism drive chains 9 — the vacuum pump 10 — a nozzle

The car can be equipped with the line 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 by the special crane up.

Complete set options:

Model 316i, 318i

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

Characteristics of the engine 330i

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. An alloy has the improved heat conductivity and smaller weight in comparison with cast iron. the 4-valvate head of cylinders has two camshafts with the 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 a 4-cylinder turbodiesel of M47 two camshafts with the top arrangement have the chain drive and influence valves through a roller yoke. The second chain sets the fuel pump of a high pressure in motion. The 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 recirculation of the fulfilled gases.

Model 330d

The 6-cylinder turbodiesel of M57 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 recirculation of the fulfilled gases.

All engines:

Are supplied with hydrocompensators of valvate gaps.

Greasing of engines is carried out by the oil pump which at 6-cylinder engines (320i, 323i, 328i) settles down in forward part of the pallet of a case and given to 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. The 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 forward part of the block of cylinders and is given to rotation by a maple belt which at the same time sets in motion auxiliary units, namely, the generator, the pump of the power steering and the compressor of the conditioner.

It must be kept in mind that the cooling system of the engine has to be all the year round filled with mix from means for protection against corrosion and freezing, and also the water which is 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 viscous 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 engine temperature for achievement of the minimum fuel consumption is optimized.

On all petrol engines the 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 a motive compartment it can repeatedly occur. At work in a motive compartment and the warm engine it is necessary to consider possibility of turning on of the electric fan. Way of elimination: Rasstykuyte fan electric motor socket. For functioning of ignition and preparation of fuel and air mix there is a control system of the engine which is not demanding service that excludes need of adjustment of the moment of ignition or idling within carrying out maintenance.

home