Diesel engine cooling system BMW X5 E53

Engine cooling system — general information
The engine cooling system is liquid, sealed with forced circulation. Cooling system includes cooling jackets (head and cylinder block); cross-flow aluminum...

Coolant Pump — Design Description
The coolant pump is centrifugal type, mounted on the front end wall of the engine block. The pump shaft is driven by a poly-V-ribbed (multi-stream) belt...

Radiator — general information
The radiator is designed to remove heat from the coolant and is made in the form of a horizontally located set of aluminum tubes with the right and left tanks....

Expansion tank — general information
The expansion tank serves to fill the system with coolant, with a volume that ensures the preservation of the liquid expanding with increasing temperature and...

Thermostat — general information
The thermostat is designed to turn on and off a large circle of engine coolant circulation, depending on its temperature state. Temperature of the beginning of...

Fan and viscous coupling
The nine-blade fan is mounted on the coolant pump shaft and is designed to create an air flow through the radiator. The fan impeller has a diameter of 420 mm...

Coolant temperature sensor
A three-pin coolant temperature sensor is installed on the fitting on the left side of the engine cylinder head in the region of the 6th cylinder. The signals...

Coolant — general information
coolant in (antifreeze) used on diesel engines is identical to gasoline engines (see above). The cooling system of BMW vehicles is filled only with approved...

Coolant pump replacement
Attention! When working on the oil, fuel and coolant circuit, the generator must be protected from contamination. Avoid damage to the sealing surfaces on the...

Replacing the thermostat of the cooling system
The thermostat is built into the housing and can only be replaced as an assembly. The replacement of the thermostat of the cooling system must be carried out...

Coolant replacement
Attention! The coolant should be replaced only on a cold engine, due to the possibility of steam burns. Protect the generator from contamination. Install a...

Replacing the casing and electric fan
Attention! During work, prevent damage to the radiator fins. Replacement of a casing of the fan is necessary for carrying out in a following order. Read...

Checking the cooling system for leaks
Attention! All work on checking the tightness of the cooling system should be carried out on a cold engine, in order to avoid steam burns. Residual coolant can...

Checking the overpressure valve of the filler cap
Attention! System pressure indicator «DIS» shows the absolute value of the pressure, taking into account the ambient pressure. Checking the overpressure valve...