BMW 850i Workshop Manuals and Repair Manuals

To bleed the brakes on a BMW 850i, start with the brake farthest from the master cylinder and work your way closer. Attach a clear hose to the bleeder valve and submerge the other end in a container of brake fluid. Have a helper press the brake pedal while you open the bleeder valve. Close the valve and repeat until all air is removed from the system.

To change the spark plugs in a BMW 850i, first locate the spark plug wires and remove them from the spark plugs. Use a spark plug socket to remove the old plugs and install the new ones. Reattach the spark plug wires.

To check the transmission fluid level in a BMW 850i, the engine must be running and the transmission should be in park or neutral. Locate the dipstick, which is usually labeled "transmission," and remove it. Wipe it clean, reinsert it, and remove it again to check the fluid level. The fluid should be between the two marks on the dipstick.

To replace the air filter in a BMW 850i, first locate the air filter housing which is located near the engine. Remove the housing cover and take out the old air filter. Insert the new air filter and reattach the housing cover.

To replace the alternator in a BMW 850i, first disconnect the battery cables. Remove the drive belt and the electrical connections to the alternator. Remove the bolts holding the alternator in place and remove it from the engine. Install the new alternator and reattach the electrical connections and drive belt.

To replace the cabin air filter in a BMW 850i, first locate the filter housing, which is usually under the dashboard on the passenger side. Remove the housing cover and take out the old filter. Insert the new filter and reattach the housing cover.

To replace the fuel filter in a BMW 850i, first locate the filter which is usually near the fuel tank. Release the pressure from the fuel system by removing the fuel pump fuse and starting the engine until it stalls. Remove the old filter and install the new one. Reattach the fuel pump fuse.

To replace the radiator in a BMW 850i, first disconnect the battery cables. Drain the coolant and remove the upper and lower radiator hoses. Remove the mounting bolts and brackets holding the radiator in place and remove it from the engine bay. Install the new radiator and reattach the hoses, brackets, and battery cables.

To replace the serpentine belt in a BMW 850i, first locate the belt routing diagram which is usually located near the engine. Use a belt tensioner tool to release the tension on the belt and remove it. Install the new belt according to the routing diagram.

To replace the thermostat in a BMW 850i, first locate the thermostat housing which is usually near the engine. Drain the coolant and remove the housing cover. Take out the old thermostat and install the new one. Reattach the housing cover and refill the coolant.

The BMW 850i does not have a timing belt, it has a timing chain. The timing chain does not need to be replaced unless there is a problem with it such as excessive wear or damage. It is important to follow the recommended maintenance schedule for the vehicle to prevent timing chain issues.

To replace the windshield wipers on a BMW 850i, lift the wiper arm away from the windshield and press the release tab on the wiper blade. Pull the blade off the arm and attach the new blade. Lower the arm back onto the windshield.

To test the battery in a BMW 850i, use a voltmeter to measure the voltage across the battery terminals. A fully charged battery should read around 12.6 volts. If the voltage is lower, the battery may need to be charged or replaced.

The brake fluid in a BMW 850i should be changed every two years. This is to ensure that the fluid is fresh and free of moisture, which can cause brake system corrosion and reduced braking performance. It is also recommended to have the brake system inspected every year.

The recommended oil type for a BMW 850i is synthetic 5W-30. It is important to use high-quality oil to maximize engine performance and longevity. The oil should be changed every 7,500 miles or every year, whichever comes first.