BMW 3 Series E46
since 1998 release
Repair and operation of the car
BMW 3 Series E46
+ BMW 3 cars (E46)
+ Current leaving and service
- Cooling systems, heating
- Engine cooling system
Replacement of cooling liquid
Check of a thermoswitch
Check of the cooling system under pressure
Connection and separation of the quick disconnect coupling
Removal and installation of the thermostat
Removal and installation of a fan / casing of the fan
Removal and installation of the fan with the viscous coupling
Removal and installation of a radiator
Removal and installation of the pump of cooling liquid
+ Heater and conditioner of air of salon
+ 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
+ Onboard electric equipment
+ Schemes of electric equipment
Check of the cooling system under pressureTightness of system and operation of the safety valve in a cover of a radiator can be checked by means of the special tool, for example, of HAZET 4800/9.
1 Check the level of cooling liquid.
2 Check, whether dry all accessions of hoses. If necessary wipe them.
4 The created pressure can fall within 2 min. no more, than to 0.1 bars. If pressure falls further, reveal the place of leak in system. At pressure raising liquid follows through the place of leak. Condense the place of leak.
5 If pressure falls without liquid loss, the place of leak can be in the engine, for example, defective sealing laying of a head of cylinders or a crack in the case can be such place.
6 If pressure keeps though in the course of the movement of the car loss of cooling liquid takes place, start the engine and let's it work on single turns. The manual pump create pressure about 1 bar and check visually a radiator. Localize leakage and condense.
7 Stop the engine. Slowly turn off a connecting element, having taken off pressure in the cooling system.
Valve check of a stopper
9 Create the manual pump of the tool pressure. The stopper has to be tight. The safety valve in a stopper has to open only with a pressure of 1.0 bars (Models 320d: 1.4 bar). Otherwise replace a stopper.
10 Create vacuum in a stopper. At vacuum of 0.1 bars the vacuum valve in a stopper of a radiator has to open.
11 In the presence of damages of a rubber ring to a stopper replace it. Screw a stopper.