BMW X5: Thermostat And Connecting
REMOVING AND INSTALLING/REPLACING COOLANT THERMOSTAT (N62)
WARNING: Danger of scalding! Only perform these tasks on an engine that has cooled down.
Recycling:
Catch and dispose of drained coolant.
Observe country-specific waste-disposal regulations.
Follow instructions for working on cooling system.
Remove front underbody protection.
Remove coolant drain plug on radiator. Drain and dispose of coolant.
Unlock plug (1) and remove.
Unlock and detach water hose (2).
Unfasten nut.
Release screws and remove coolant thermostat (3).
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Fig. 723: Locating Water Hose And Plug
NOTE: Coolant thermostat is integrated in cover and can only be replaced as a complete unit.
Clean sealing surfaces.
Replace sealing ring (1).
Installation:
Top up coolant.
Vent cooling system and check for leaks.
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Fig. 724: Identifying Sealing Ring
READ NEXT:
Intake Manifold
REMOVING AND INSTALLING INTAKE AIR MANIFOLD (N62)
Remove acoustic cover. To remove, unfasten screws. Raise acoustic cover and
remove towards front.
Remove design cover, if equipped.
Remove center o
Vacuum Pump
REMOVING AND INSTALLING/REPLACING VACUUM PUMP (N62/N62TU)
NOTE: Press brake pedal several times in order to reduce vacuum
pressure in brake
booster.
Installation location:
Vacuum pump is fitted on cy
Air Pump, Lines And Connectors
REMOVING AND INSTALLING/REPLACING AIR PUMP (N62)
Remove upper section of intake filter housing.
Release retaining screws on coolant expansion tank.
Remove suction filter housing.
Remove raw air hous
SEE MORE:
Replacing Rear Cover Gasket On Rear Differential (188K)
IMPORTANT: To avoid leaks from the rear differential cover, do not use
a paper gasket in
cars with liquid gaskets!
To prevent the differential oil from foaming over, make sure that no remnants
of the liquid gasket are pressed into the rear differential housing.
Release screws (1).
Tightening torqu
Bolts
Although, the N54 engine has an all aluminum crankcase, many of the bolts are
still aluminum as on the N52.
This is to reduce any potential confusion between steel and aluminum bolts.
Some bolts, for example, are steel
such as the cylinder head cover bolts. This is possible, due to the plastic
cy
