M62 engine cooling system BMW X5 E53

Engine cooling system — design description
The design of the engine cooling system is shown in Fig. 4.15. The engine cooling system is liquid, sealed with forced circulation. It includes: cooling...

Coolant pump — design description
The design of the coolant pump is shown in Fig. 4.16. The centrifugal coolant pump is mounted on the front end wall of the engine cylinder block. The pump...

Fan and viscous coupling — design description
The nine-blade fan (Fig. 4.17) is mounted on the coolant pump shaft and is designed to create an air flow through the radiator. The fan impeller has a diameter...

Coolant — General Information
When replacing antifreeze, be sure to flush the cooling system with softened water. Let the engine run for 3-5 minutes, drain the water and blow out the system...

Checking the tightness between the cooling system and the combustion chamber
Checking the cylinder head for leaks using a carbon monoxide leak detection device must be carried out in accordance with the operating instructions of the...

Bleeding the cooling system
Attention! The mark on the expansion tank shows the liquid level at a temperature of about 20°C. Bleeding the cooling system must be carried out in the...

Replacing the coolant pump
The coolant pump is driven by the auxiliary drive belt. The fan impeller with a viscous coupling is secured to the front of the pump shaft. The design of the...

Replacing the cooling system thermostat
Thermostat (6, Fig. 4.16) built into the pump body and can be replaced separately from it. The thermostat must be replaced in the following order. Remove the...

Replacing the coolant manifold
Since the engine has two cylinder heads, the coolant is drained in parallel, thanks to the manifold (1, Fig. 4.107). Remove the intake manifold and stiffener...

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BMW E53 (1999-2006)