It may stick and give you a hard time. If this is the case, gently pry between the expansion tank and mounting bracket to release. Be very careful, all items you are prying on are made of plastic.
Large Image Extra-Large Image Figure 2. Remove the air filter housing assembly fasteners (yellow arrows) and disconnect the air flow meter electrical connector (green arrow). Large Image Extra-Large Image Figure 3 Working at the top of coolant expansion tank, using a flathead screwdriver, release both.
If you are looking for more Technical Articles to diagnose or repair cooling issues please visit our. E46 page. Drain the cooling system. See our Pelican Parts Technical Article on. Flushing Your Coolant. Remove the cooling fan shroud.
Rotate the coolant level sensor 90 counter-clockwise and pull out (green arrow). When installing your new expansion tank, connect the coolant level sensor electrical connector, then press it into the mounting bracket and engage the retaining clip.
Keep in mind that when your car was serviced before, parts may have been replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have, so be prepared with different size.
BMW E46 cooling system components include: Radiator and coolant overflow tank Belt driven coolant pump bolted to the front of the engine block. Electric cooling fan attached to rear of radiator - the cooling fan is controlled by the engine control module (ECM) via an.
Large Image Extra-Large Image Figure 7 Pull the retaining clip tab out in order to release the bottom of the expansion tank from the mounting bracket (green arrow). Large Image Extra-Large Image Figure 8 Once you release the retainer clip, your BMW expansion tank can.
See Pelican Parts Technical Article on. Replacing Your Radiator Fan. Figure 1 Loosen the air flow meter clamp (green arrow then disconnect the duct from the air flow meter and remove the air filter housing from the engine compartment.
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Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you are working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste.
Be careful not to damage the hose or tank as both are made of plastic. Large Image Extra-Large Image Figure 5 Working at the bottom of coolant expansion tank, using a flathead screwdriver, release the lower hose's retaining clip by it prying up (green arrow).
Recycle parts, packaging and fluids when possible. Do not work on your vehicle if you feel the task is beyond your ability. Vehicle models change and evolve, as they grow older, so the vehicle shown in our illustrations may vary slightly from yours.
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